Thanks sooo much! Your video was awesome! I'm a single mother who doesn't have extra money and your video showed me exactly how to replace the control module, down to needing a 9/32 socket. I bought the part on ebay for $64 and it took me 20 minutes from start to finish. Thanks again!
Ordered my part from Amazon on Saturday, received it this morning. Just finished it took about twenty minutes works great. Now my granddaughter won't be cold this winter. Of course today it was 72 degrees. I have a 2004 Tahoe thanks.
I just want to say thank you for posting this video, it's a great step by step procedure for replacing the rear aux heating module, it was a breeze, and the best part is that it fixed the problem, I now have rear heat. Thank you again!
Spitfire, thank you for a complete and easy to follow video. It really gave me confidence to jump in and make this repair. I had my laptop out in the garage and would stop and refer to the video...and the problem is fixed. Again, great job and thank you!
Thanks so much for the post. I have 2004 chevy tahoe and my issue was the front vents were blowing cold air but the back vents were blowing hot air. The part number you recommended fixed it right up, thanks again...
Great video. I've been driving around for at least 3 years with no heat in the back of my truck. This winter the kids have been complaining more than normal, so I figured it was time to fix it. Swapped out the module, and at first, I still couldn't get any warm air in the back. I tried pulling the fuse several times, and nothing would work. After another Google search, I found a thread somewhere that mentions pulling the 60 amp VSES/ECAS fuse under the hood. That should be for the stability control, so I couldn't imagine it would work. IT DID!!! Now I have hot air, and the kids are happy. Thanks!
Glad to hear that you finally got it working. The reason I fixed mine was because we had a new born and couldn't drive around without heat! Thanks for watching, I appreciate it!
Spitfire thank you for the informative and $$ saving post, I followed your instructions to spec, after buttoning all the trim/panels back together I still am getting cold air! I have pulled the fuse turned the truck to ON for 1min interval shut truck off replaced fuse at least 5x with the truck at normal operating temperature. Blowing plenty hot in the cockpit but 2nd and 3rd row remain cold. I attempted to pull the VSES 60amp fuse that Mike refers to above. In my attempt it would not come loose and ended up crushing some of the plastic around the fuse with the pliers. Mike did your VSES fuse come out with ease? I don't want to cause myself more headache. I'm in NY and we are expecting 30+inches of snow in the next 24hrs, rear heat would certainly be a blessing... SOS!!
Bryce Leonhardt I am not sure, I guess my best advice at this point is would be to pull the fuse again..... turn on truck for at least 30 seconds but not too much longer, turn switch off, replace fuse and try it. I am not sure if going longer than 40-50+ seconds will null the reset or not.
spitfire1821 I will attempt the 30sec increment hopefully that makes the difference. If not I will probably be investing in a new 60 amp fuse as a plan b. I did read on Amazon for some the fuse pulling didn't work and disconnecting the battery was necessary in order to reset any codes. I will keep everyone posted, perhaps my learning experience can help another poor soul as your contribution has.
The rear fuse is the RR HVAC. its actually the 30 amp fuse. At least on my Cadillac escalade. the 10 amp fuse runs the front. I was getting A/C in the back when I wanted Heat. The actuator (next to the module that's replaced in this video) was not switching from AC to heat. I replaced it, the actuator reset by switching back and forth but then now it stays on cold again. Going to replace the module next. Good video, some people might have to replace both to get it working.
Thank you very much for your excellent video, I had to return one back to the dealer thinking it was the incorrect module that they had given me. But thanks to your video I was able to calibrate the module by following the steps you show on the video. Thank you very much again I owe you lunch my friend!!!!!
I have a 2002 Chevy Tahoe The blower in rear stop working. I followed your instructions. Instead of replacing it. I tap it and it works. I will replace it soon but as long I don't put the controller on high. Thank you.
Really helpful video. We have an 03 Z71 Tahoe that we bought new in December 2002 - still running, but I know that sooner or later I'll need this video. Thanks for the tips.
Thank you for this, my 05 yukon has this issue started last year, I love the rear heat as a neck warmer and not being able to use rear heat really sucks lol
Good demonstration. Only bit I would add. When replacing an electrical component inspect the failed component connections. Just in case of corrosion which you will want to clean if found. Dielectric grease is also a good idea especially for electrical connections on the cars exterior.
Precision Machine Shed: I really appreciate your video on showing how to remove that panel. Because of your video I got to fix my Suburban rear A/C resistor. Thanks for tha awesome VID!!!!
I have been trying to find a video to show how to pull the interior trim.....This was perfect!! I am replacing the Woofer on the other side in an '01 THANK YOU!
+bfriendly100 Glad I was able to help. When I made this I was in the same boat as far as there was nothing showing how to tear it all apart. Thanks for watching and commenting!
05 yukon. Gm suks electrical issues everywhere. All my heater controls have had problems including the heater digital control box i replaced with a junkyard box and it performs exactly the same way, Only heats the vehicle if I set it at 90°. Now my rear heat does not work for the second year in a row in the middle of the bitter cold winter and I decided to chop a hole in the area where you showed the actuator is located and I'm going to turn the flap door to the heat position and put a screw to hold it. Forever. My AC doesn't work anyway.
Hey, just thought I'd share my experience. This video was extremely helpful in changing the HVAC control module, however, the explanation on how to re-calibrate the actuators, would NOT help work for me! What I ended up doing, by searching other sites, was: set both front and rear climate control to cool, turn the ignition to off, pull the HVAC fuse, wait 10 seconds, reinstall fuse, turn vehicle on for 40 seconds while actuators calibrated, turn vehicle off, start vehicle, and the heat finally started working. So, if any of you all have issues getting the dang thing to re calibrate, try this out as well. Thanks, awesome video, extremely helpful, step-by-step instructions!!!
Josh Crosland Thanks for that tip. I'm didn't mention that or do I remember where my heat settings were. Maybe I got lucky.. Glad to hear you got yours working!
spitfire1821 does this help also if the A/C isn't coming out also? Just replaced a compressor. A/C is coming out the front of the truck nice and cold but still no A/C or heat coming out of the rear vents.
vincent rawlinson I'm not 100% sure, but this module does control a flap which switches from heated air to the duct for cold air. If you let it run for 10 plus mins and nothing, than I can't say for sure. You could try reading through the other comments here and see if you can come up with something.Sorry I couldn't be more help.
thanks, great video and tutorial. Unfortunately I changed out the module but got nothing. I have zero rear heat or a/c or even air blowing at all...it's as if it has no power at all. Yes, I have checked the aux/auto things. The front hvac works great. Any ideas what to check back there? checked the fuses, they seem fine. Oh, this is for an '05 Cadillac Escalade thanks!!
HEY SPITFIRE 1821!!!!, thank you for a complete and easy to follow video. I was able to knock this replacement job out in less then 20 Minutes...Sweet Big Thanks....:)
Good stuff here. I have a 02 yukon and my friend has a 05 Denali. He asked me about this problem and I had no idea. Hopefully he can get right with this info. Thanks
Thanks for your comments. I'm glad I could help you out. That's all I am is a DIY'er. I try and put out videos that make sense and are easy to follow. Be sure to check out my Channel if you haven't already. Thanks!
Just bought an 04 Tahoe 130K for 8K, and here I am ;) thanks for the heads up man!!! The rear heat has its own personality!! So I'm going to dive in head first, and this gives me a place to start! Thanks again!!! ;)
I can’t seem to find this part anywhere, does that mean it is no longer in production? Is there any chance you can post a link in reply to the correct part??
Excellent video... I'm having that very problem right now. No rear heat Yukon Denali XL. Also front blower controls not turning the blower on. Possible blower control resistor problem.
Can I trouble you with a question? I originaly had no rear heat in my 03 Tahoe, I replaced the control module as you suggested and WA LA! We had heat, so I thought I would check the rear AC and it blows warm air, the front AC blows cold. Should I be looking at the rear heater/AC blend door actuator or could it be something else? Thank you.
+Boe Jebie You could. I'm not 100% sure what the issue would be but there are a lot of comments below talking about similar issues. I can't recall if anyone posted a fix. Thanks!
Great video, not sure if you said it, but this only applies to vehicles with automatic climate control. Ordered the module for my 04 Tahoe, only to find out it's not there. Ended up having a bad motor and picked up a reman at O'Reilly's
Hey guys I have hot heat in the rear at all times. I switch it to cool and it changes up front but still blows hot in the rear. I've tried changing the settings up front and in the rear. Could changing the module in the rear correct this issue? I welcome any ideas.
I have a 2006 Chev Suburban. The heat is going in and out in the front. It's like when i hit a small bump it goes out and then eventually will get hot again. Could this be a quick fix? The back heat doesn't work at all, so my husband hopefully can watch this video and replace that part. Thanks for your help!
Not sure I can help with the front heat issue other than checking fuses. Google search and reading a bunch of forums might be your best bet there. Good luck, hopefully you get it figured out. If you do please report back. Thanks!
I hear a noice in mine in the back of it like a clunking noice when I’m driving is it that? Definitely not drive train or suspension. It’s definitely in the inside in that area
this video is awesome, thanks for sharing, I got probably same issue on my 2005 Tahoe but, only hot air on the rear, changing the AC Control Module like showed will fix my problem??... thanks
+Adolfo Prieto Thanks, I'm not sure if would fix it or not, but it kind of makes sense that it would. I know several other people have asked the exact same questions below and I have not heard back from any of them if this works.
Very good and to the point video. Expedited access to the rear unit. I have replaced all front actuators on the 2004 Yukon last year, now I have the rear blowing hot or warm when a/c is on blowing properly in the front. Seems the rear has too much heat and no a/c or cooling. I am hearing the clicking sound on r/rear now so do you think its this module or one of the actuators?
Did you replace the Module? I guess I didn't if you did or didn't. If you didn't It may be that, but if you are getting a clicking noise back there, it would make me think that the actuator is getting power and ether engaging or trying to engage. You might have to tear it down again and have someone watch as the switch is thrown to see if the lever is moving or trying to move. I wouldn't think that you would have an obstruction in there, but wouldn't hurt to check if it is moving and not going through it's full movement. It could be the actuator too. I'm not quite sure how to test these for function, but I'm sure someone should have some info on the internet someone about that. Sorry I do not have a definitive answer for you, but maybe some of my suggestions will head you in the right direction. Thanks for the watching and thanks for the comments.
Using the GM service bulletin as guide and not knowing which of the two codes I had, its a gamble. Apparently mine was the B0424 which was the heat/cold actuator. Regardless the problem is corrected with that.
I have 04 GMC Yukon denali xl the same problem no heat in the rear here's a problem I can't take out the panel I pulled it very hard but it won't pop out can you help me out
Awesome video ... thank you for posting it! I suppose I should check the fuse first... But is there anything else I should check before I order this part?
I think a lot of people start swapping parts and start with the cheapest or most obvious one first and go from there. This module fixed my issue at the time, but that would have probably been my second part to replace.
So I have kinda the same issue in my 03 tahoe.. rear controls dont work at all. Just blows COOL air.. wont get cold or hot heat.. would you recommend the same process?? Switching the rear module?!
Hi thank you for this video, I on the other hand gave a different isue my 2003 suburban after a long weekend trip up to Eustis FL my rear Ac unit stop working for some reason can't figure out why cause my front unit works no problem so maybe u think this could be the problem please wat saids thanku for these videos
+lolo ent No problem, as far as your issues I am not sure. I have not had that issue so I have not had to fix it. I know there were several people that have commented on this video that have asked about that issue. Maybe you could ask one of those people and maybe they figured it out. Sorry I couldn't be of more help to you!
maybe, going off memory, if it's stuck in the cool air position, it will actuate the door and flip it. Otherwise, i think possibly one of the switches on the dash may cause that too.
Thanks for the video. The air in the rear of my 2005 Chevy Tahoe has been blowing hot and will not go cold. I removed the back panel and replaced the actuator with ACDelco 15-72972. After installing I waited a few minutes for the actuator to calibrate before turning the car off and then on again and then starting the air. The rear still blows only hot air - do you know what the problem could be?
+Brian Olson Not sure but you might have to pull the fuse again and go through the reprogramming again. There are quite a few guys that had to do it more than once before it took.
Thanks for the video. Do you know if the rear zone blower and especially the resistor for it is under that cover you removed? Two speeds on my wife's rear zone don't work anymore.
hckyplyr9285 Hey, I'm not completely sure. If you are getting heat,but only on a couple speeds could be the speed control switch. As for a resistor, I can't help you there. Thanks for watching!
Bad heater core. If the front blows hot air and the rear lines don’t get hot at all it’s a bad rear heater core. You could try to flush the core but at that point its probably best to flush and replace.
Thank You, I just got this vehicle didn't even know there was a heater core back there.i have a question right on top of the tailpipe there's a drain hose is that for the A.C or also for the coolant, because 3 days ago I filled the coolant reservoir and when I started my vehicle my service engine light was on and my RPM gauge worked only when I started moving & it said that I was low on coolant. Can you give me any idea on what it could be even just that slippery water coming out from the back drain. Thank You
Thanks sooo much! Your video was awesome! I'm a single mother who doesn't have extra money and your video showed me exactly how to replace the control module, down to needing a 9/32 socket. I bought the part on ebay for $64 and it took me 20 minutes from start to finish. Thanks again!
+Colorado Girl
Glad to hear it worked out for you! Thanks for letting me know!
Colorado Giró
Colorado Girl, you rock!
What is the search name for the part on eBay?
Ordered my part from Amazon on Saturday, received it this morning. Just finished it took about twenty minutes works great. Now my granddaughter won't be cold this winter. Of course today it was 72 degrees. I have a 2004 Tahoe thanks.
Sounds good, glad it worked. At least now you're ready for when it does get cold!
Anybody know what the parts name is and what the part number is at amazon. I can’t find it anywhere. Amazon, EBay or net
What is the name of this part,also was the heat just not working at all in the rear?
*Easy to assemble **Fastly.Cool*
I just want to say thank you for posting this video, it's a great step by step procedure for replacing the rear aux heating module, it was a breeze, and the best part is that it fixed the problem, I now have rear heat. Thank you again!
+Boe Jebie
No problem, glad to hear it worked for you and thanks for letting me know!
Spitfire, thank you for a complete and easy to follow video. It really gave me confidence to jump in and make this repair. I had my laptop out in the garage and would stop and refer to the video...and the problem is fixed. Again, great job and thank you!
No problem, thanks for watching. I have done that with my computer before too!
Thanks so much for the post. I have 2004 chevy tahoe and my issue was the front vents were blowing cold air but the back vents were blowing hot air. The part number you recommended fixed it right up, thanks again...
+RICKY GRAY
No problem, glad to hear it worked out for you.
Bro you know thats a lie.. the front has nothing to do with the back. The rear has its own motor and actuators that control that heat and ac
Great video. I've been driving around for at least 3 years with no heat in the back of my truck. This winter the kids have been complaining more than normal, so I figured it was time to fix it. Swapped out the module, and at first, I still couldn't get any warm air in the back. I tried pulling the fuse several times, and nothing would work. After another Google search, I found a thread somewhere that mentions pulling the 60 amp VSES/ECAS fuse under the hood. That should be for the stability control, so I couldn't imagine it would work. IT DID!!! Now I have hot air, and the kids are happy. Thanks!
Glad to hear that you finally got it working. The reason I fixed mine was because we had a new born and couldn't drive around without heat! Thanks for watching, I appreciate it!
Spitfire thank you for the informative and $$ saving post, I followed your instructions to spec, after buttoning all the trim/panels back together I still am getting cold air! I have pulled the fuse turned the truck to ON for 1min interval shut truck off replaced fuse at least 5x with the truck at normal operating temperature. Blowing plenty hot in the cockpit but 2nd and 3rd row remain cold. I attempted to pull the VSES 60amp fuse that Mike refers to above. In my attempt it would not come loose and ended up crushing some of the plastic around the fuse with the pliers.
Mike did your VSES fuse come out with ease? I don't want to cause myself more headache. I'm in NY and we are expecting 30+inches of snow in the next 24hrs, rear heat would certainly be a blessing...
SOS!!
Yes, mine popped right out.
Bryce Leonhardt I am not sure, I guess my best advice at this point is would be to pull the fuse again..... turn on truck for at least 30 seconds but not too much longer, turn switch off, replace fuse and try it. I am not sure if going longer than 40-50+ seconds will null the reset or not.
spitfire1821 I will attempt the 30sec increment hopefully that makes the difference. If not I will probably be investing in a new 60 amp fuse as a plan b. I did read on Amazon for some the fuse pulling didn't work and disconnecting the battery was necessary in order to reset any codes. I will keep everyone posted, perhaps my learning experience can help another poor soul as your contribution has.
Bought the module and both actuators for $40 at my local junk yard.
It could also be a bad blend door actuator that will cause no heat in the rear as well
The rear fuse is the RR HVAC. its actually the 30 amp fuse. At least on my Cadillac escalade. the 10 amp fuse runs the front. I was getting A/C in the back when I wanted Heat. The actuator (next to the module that's replaced in this video) was not switching from AC to heat. I replaced it, the actuator reset by switching back and forth but then now it stays on cold again. Going to replace the module next. Good video, some people might have to replace both to get it working.
That's good info, Thanks for taking the time to post it here!
Okay Google power windows
Thank you very much for your excellent video, I had to return one back to the dealer thinking it was the incorrect module that they had given me. But thanks to your video I was able to calibrate the module by following the steps you show on the video. Thank you very much again I owe you lunch my friend!!!!!
Great to hear!
Thanks you was a big help now I'm officially a RUclips mechanic 😂
I have the same issue in my Yukon but I'm wondering how you diagnosed it?
I have a 2002 Chevy Tahoe
The blower in rear stop working. I followed your instructions. Instead of replacing it. I tap it and it works. I will replace it soon but as long I don't put the controller on high. Thank you.
Great to hear that worked.
Excellent video!!! Upon completion it took a little time for my suburban to warm up (40 degrees F outside) but the warm air is working again.
glad to hear it worked out.
Really helpful video. We have an 03 Z71 Tahoe that we bought new in December 2002 - still running, but I know that sooner or later I'll need this video. Thanks for the tips.
Thank you for this, my 05 yukon has this issue started last year, I love the rear heat as a neck warmer and not being able to use rear heat really sucks lol
Good video, it's the same process in my 03 Yukon.
Good demonstration. Only bit I would add. When replacing an electrical component inspect the failed component connections. Just in case of corrosion which you will want to clean if found. Dielectric grease is also a good idea especially for electrical connections on the cars exterior.
I agree.
outstanding video, took me about 30 mins from start to finish and I have heat again. Thanks for taking the time to upload!
+Vital Imagery
No problem, thanks for letting me know it worked out for you! Thanks!
Precision Machine Shed: I really appreciate your video on showing how to remove that panel. Because of your video I got to fix my Suburban rear A/C resistor. Thanks for tha awesome VID!!!!
Glad it helped you out.
I'm really thankful for your video. I was having the same problem with no rear heat. I changed the module myself after watching ur video 👍
Glad it helped
I have been trying to find a video to show how to pull the interior trim.....This was perfect!! I am replacing the Woofer on the other side in an '01 THANK YOU!
+bfriendly100
Glad I was able to help. When I made this I was in the same boat as far as there was nothing showing how to tear it all apart. Thanks for watching and commenting!
Nice job. Exactly what I was looking for. Now I will replace the same module in my 2006 Tahoe.
05 yukon. Gm suks electrical issues everywhere. All my heater controls have had problems including the heater digital control box i replaced with a junkyard box and it performs exactly the same way, Only heats the vehicle if I set it at 90°.
Now my rear heat does not work for the second year in a row in the middle of the bitter cold winter and I decided to chop a hole in the area where you showed the actuator is located and I'm going to turn the flap door to the heat position and put a screw to hold it. Forever. My AC doesn't work anyway.
My yukon has that. Mine won’t blow at all. Course I’ve not checked the fuse either. Thanks!!
It could be your Blower motor resistor.
Hey, just thought I'd share my experience. This video was extremely helpful in changing the HVAC control module, however, the explanation on how to re-calibrate the actuators, would NOT help work for me! What I ended up doing, by searching other sites, was: set both front and rear climate control to cool, turn the ignition to off, pull the HVAC fuse, wait 10 seconds, reinstall fuse, turn vehicle on for 40 seconds while actuators calibrated, turn vehicle off, start vehicle, and the heat finally started working.
So, if any of you all have issues getting the dang thing to re calibrate, try this out as well.
Thanks, awesome video, extremely helpful, step-by-step instructions!!!
Josh Crosland Thanks for that tip. I'm didn't mention that or do I remember where my heat settings were. Maybe I got lucky.. Glad to hear you got yours working!
spitfire1821 does this help also if the A/C isn't coming out also? Just replaced a compressor. A/C is coming out the front of the truck nice and cold but still no A/C or heat coming out of the rear vents.
vincent rawlinson
I'm not 100% sure, but this module does control a flap which switches from heated air to the duct for cold air. If you let it run for 10 plus mins and nothing, than I can't say for sure. You could try reading through the other comments here and see if you can come up with something.Sorry I couldn't be more help.
I replaced that part I didn't know about taking the fuse out. I will do that and see of it starts working
Thanks 👍
thanks, great video and tutorial. Unfortunately I changed out the module but got nothing. I have zero rear heat or a/c or even air blowing at all...it's as if it has no power at all. Yes, I have checked the aux/auto things. The front hvac works great. Any ideas what to check back there? checked the fuses, they seem fine. Oh, this is for an '05 Cadillac Escalade thanks!!
Have you fixed your problem because i have the same problem.
i would say check your blower. if you have no air blowing at all then the blower would be the prolem 9/10 times
Check your rear blower motor resistor/controller. If that goes you will have no heat or a.c. at ANY speeds.
HEY SPITFIRE 1821!!!!, thank you for a complete and easy to follow video. I was able to knock this replacement job out in less then 20 Minutes...Sweet Big Thanks....:)
No problem, Glad it helpful!
Hey Sitefire. Heads up now i don't have AC blowing in the back.im working it now but no idea as of yet...any idea what might be my issue? Thanks
This was the perfect fix for my 2006 Chevy Suburban. The directions were exact and easy to follow. Thanks so much for this video!
No problem, glad it helped you out.
Good stuff here. I have a 02 yukon and my friend has a 05 Denali. He asked me about this problem and I had no idea. Hopefully he can get right with this info. Thanks
Thanks for the video! REALLY helped me save some cash by doing the repair on my own. Tubers like you really help the everyday DIY'er. Thanks again!
Thanks for your comments. I'm glad I could help you out. That's all I am is a DIY'er. I try and put out videos that make sense and are easy to follow. Be sure to check out my Channel if you haven't already. Thanks!
Just bought an 04 Tahoe 130K for 8K, and here I am ;) thanks for the heads up man!!! The rear heat has its own personality!! So I'm going to dive in head first, and this gives me a place to start! Thanks again!!! ;)
BUILTLIGHTWOUNDTIGHT man 8k for a 04? Is it at least a z71?
This fixed my problem, Thank you!
This guy really knows how to get shit popin off! 😂
Do what it takes.
I can’t seem to find this part anywhere, does that mean it is no longer in production? Is there any chance you can post a link in reply to the correct part??
I can't find it ether. You may need to do some searching.
thanks this is a great video I appreciate your help we gotta learn to help one another thank you so much for the help
+Scotty tomcat
No problem, I appreciate the comments and thanks for watching.
Thanks so much for your video! Fixed the rear heat in my 2003 Yukon!
Joseph Horne Glad I was able to help you out and thanks for watching. I appreciate it!
Thanks spitfire1821, this made the repair to my 2003 Tahoe quick and easy.
Glad it was a help for you! Thanks for watching!
Excellent video... I'm having that very problem right now. No rear heat Yukon Denali XL. Also front blower controls not turning the blower on. Possible blower control resistor problem.
Maybe, You might have a bad switch too. My front end has always worked great. My rear heat is still working great two years after this fix also.
Definitely about to try this now
Good video
Good video, wasn't sure about how to get panel off. Thanks for the video
+Michael Kiser
No problem! Thanks for watching and glad I was able to help!
I have a 99 gmc suburban where would the module be in those I cant seem to find anything about my year for the rear heat/ac
Can I trouble you with a question? I originaly had no rear heat in my 03 Tahoe, I replaced the control module as you suggested and WA LA! We had heat, so I thought I would check the rear AC and it blows warm air, the front AC blows cold. Should I be looking at the rear heater/AC blend door actuator or could it be something else? Thank you.
+Boe Jebie
You could. I'm not 100% sure what the issue would be but there are a lot of comments below talking about similar issues. I can't recall if anyone posted a fix. Thanks!
Have you had to replace actuator dooes or other in dash fixes for hvac in your Tahoe yet?
thank you mine keeps blowing hot won.t go to cold this might be what wrong with it
What is that part called that you replaced
How do you fix your cold ac.i have only heat coming out and my rear controls where the rear passengers can control went out just went dead
Great video. Thank you for posting and helping me.
Glad I could help. Thanks for watching!
This is to fix the heater on the headliner right?
Great video, not sure if you said it, but this only applies to vehicles with automatic climate control. Ordered the module for my 04 Tahoe, only to find out it's not there. Ended up having a bad motor and picked up a reman at O'Reilly's
Good to know. Never thought about the auto climate control myself.
What is the part number of the actuator the decides if it blow cold or heat?
Hey guys I have hot heat in the rear at all times. I switch it to cool and it changes up front but still blows hot in the rear. I've tried changing the settings up front and in the rear. Could changing the module in the rear correct this issue? I welcome any ideas.
same here. did you ever fix it?
No it just started working again on its own.
Thank you for your response, I'll keep digging:)
Does this module control the fan or the radiator fluid, or both? I have fan but no heat.
Good job
I have a 2006 Chev Suburban. The heat is going in and out in the front. It's like when i hit a small bump it goes out and then eventually will get hot again. Could this be a quick fix? The back heat doesn't work at all, so my husband hopefully can watch this video and replace that part. Thanks for your help!
Not sure I can help with the front heat issue other than checking fuses. Google search and reading a bunch of forums might be your best bet there. Good luck, hopefully you get it figured out. If you do please report back. Thanks!
Crystal Thomas could be thermostat or low coolant
It was the coolant!!! Yay!!!
That you much Bud, Saved us All some serious coin. Unfortunately I cracked the dawg gone speaker panel (LOL). Again, thanks.
Thanks much appreciated. Would be interesting to see the total $$ that people have saved from doing this project themselves.
Thank you so much. Your video helped so much.
Glad it helped you out.
My Tahoe is getting no ac in the back,is it the same or could it be the blend door actuator in the back?
I hear a noice in mine in the back of it like a clunking noice when I’m driving is it that? Definitely not drive train or suspension. It’s definitely in the inside in that area
I have a 05 Chevy Tahoe and I hear that same noise I wonder is that the problem
@@davonteammons1684 it sounds like its the blend door that has broke and is rattling around in yours.
So I have watched two different videos on a tahoe and a yukon on the same issue, bit each guy changed a different part
Thanks for posting,
I have a 2007 Yukon STL and was wondering if it's the same fix
That's the newer style of course, but the parts are probably similar.
Thx man, that was helpful info..heat again
+dcole808
Glad to hear it worked. Thanks for letting me know!
I have the same problem but I own a 2003 GMC Yukon. Would this be the same part number as yours?
good job 👍
this video is awesome, thanks for sharing, I got probably same issue on my 2005 Tahoe but, only hot air on the rear, changing the AC Control Module like showed will fix my problem??... thanks
+Adolfo Prieto
Thanks, I'm not sure if would fix it or not, but it kind of makes sense that it would. I know several other people have asked the exact same questions below and I have not heard back from any of them if this works.
Very good and to the point video. Expedited access to the rear unit. I have replaced all front actuators on the 2004 Yukon last year, now I have the rear blowing hot or warm when a/c is on blowing properly in the front. Seems the rear has too much heat and no a/c or cooling. I am hearing the clicking sound on r/rear now so do you think its this module or one of the actuators?
Did you replace the Module? I guess I didn't if you did or didn't. If you didn't It may be that, but if you are getting a clicking noise back there, it would make me think that the actuator is getting power and ether engaging or trying to engage. You might have to tear it down again and have someone watch as the switch is thrown to see if the lever is moving or trying to move. I wouldn't think that you would have an obstruction in there, but wouldn't hurt to check if it is moving and not going through it's full movement. It could be the actuator too. I'm not quite sure how to test these for function, but I'm sure someone should have some info on the internet someone about that. Sorry I do not have a definitive answer for you, but maybe some of my suggestions will head you in the right direction. Thanks for the watching and thanks for the comments.
Using the GM service bulletin as guide and not knowing which of the two codes I had, its a gamble. Apparently mine was the B0424 which was the heat/cold actuator. Regardless the problem is corrected with that.
That's good to know, Thanks for letting us know!
mine doesnt have heat or cold but the blower runs perfect. Is that same part the problem?
I have 04 GMC Yukon denali xl the same problem no heat in the rear here's a problem I can't take out the panel I pulled it very hard but it won't pop out can you help me out
Great help! Thanks !
Glad it helped. thanks!
Thank you brother!
Great video!!!
+Sidney Montes
Thanks! Appreciate it.
Awesome video ... thank you for posting it! I suppose I should check the fuse first... But is there anything else I should check before I order this part?
Not that I can think of.
Great video thank you so much very helpful
Glad it was helpful!
my tahoe2004 is not blowing cold air in rear seats and i was wondering if i changed that will it help fix this problem
You can read through the comments. This repair fixed the control mechanism for the actuator that flips the door from hot to cold.
thank you so much. i have to replace mine as well
+Rob Hardison
No problem, Glad I was able to help!
Great vid I'm about to order this
+Chris Turner
Let me know how it works for you!
may GOD bless you and your family this is a GOD send.
I searched Google and eBay. Can't find a video on 05 Yukon/ suburban. Rear heater.
worked great - thank you!
Glad to hear it worked out. Thanks for watching.
My truck will blow ac & heat out in the front but not in the back is it the same to fix it ?
Should be
What's the purpose of turning on the vehicle for 30 seconds before installing fuse?
I had a rear blend door actuator go bad not sure how you diagnosed it?
I think a lot of people start swapping parts and start with the cheapest or most obvious one first and go from there. This module fixed my issue at the time, but that would have probably been my second part to replace.
So I have kinda the same issue in my 03 tahoe.. rear controls dont work at all. Just blows COOL air.. wont get cold or hot heat.. would you recommend the same process?? Switching the rear module?!
Hi thank you for this video, I on the other hand gave a different isue my 2003 suburban after a long weekend trip up to Eustis FL my rear Ac unit stop working for some reason can't figure out why cause my front unit works no problem so maybe u think this could be the problem please wat saids thanku for these videos
+lolo ent
No problem, as far as your issues I am not sure. I have not had that issue so I have not had to fix it. I know there were several people that have commented on this video that have asked about that issue. Maybe you could ask one of those people and maybe they figured it out. Sorry I couldn't be of more help to you!
What if you have rear heat only would this fix that as well?
maybe, going off memory, if it's stuck in the cool air position, it will actuate the door and flip it. Otherwise, i think possibly one of the switches on the dash may cause that too.
Thanks for the video. The air in the rear of my 2005 Chevy Tahoe has been blowing hot and will not go cold. I removed the back panel and replaced the actuator with ACDelco 15-72972. After installing I waited a few minutes for the actuator to calibrate before turning the car off and then on again and then starting the air. The rear still blows only hot air - do you know what the problem could be?
+Brian Olson
Not sure but you might have to pull the fuse again and go through the reprogramming again. There are quite a few guys that had to do it more than once before it took.
+spitfire1821
Thanks for the quick reply. Can you please remind me how to reprogram?
I can't remember, I explain it in the video.
How did you get the black knobs screwed back on when you put put back on??
It's been so long since I did this I cannot remember.
How much was the module of dollar-wise?
How much did that cost the rear heater box
Thanks for the video. Do you know if the rear zone blower and especially the resistor for it is under that cover you removed? Two speeds on my wife's rear zone don't work anymore.
hckyplyr9285 Hey, I'm not completely sure. If you are getting heat,but only on a couple speeds could be the speed control switch. As for a resistor, I can't help you there. Thanks for watching!
My rear AC doesn't blow at all... Would you suggest the same fix?
Could be a fuse, this just fixes the controller that actuates the door going from hot to cold air.
My rear hoses aren't getting hot from antifreeze to provide heat?
Bad heater core. If the front blows hot air and the rear lines don’t get hot at all it’s a bad rear heater core. You could try to flush the core but at that point its probably best to flush and replace.
I have heat again.... Thanks man!
THET0DDFATH3R Glad I was able to help. Thanks for watching!
Do the 1993 suburban have that behind there too?? I have no cold air blowing from the rear
I am not sure myself.
Thank You, I just got this vehicle didn't even know there was a heater core back there.i have a question right on top of the tailpipe
there's a drain hose is that for the A.C or also for the coolant, because 3 days ago I filled the coolant reservoir and when I started my vehicle my service engine light was on and my RPM gauge worked only when I started moving & it said that I was low on coolant. Can you give me any idea on what it could be even just that slippery water coming out from the back drain. Thank You
Sounds like your back heater core is leaking. I'm no mechanic though.