Those early 02-04 modules were known to fall asleep and not wake up till it was unplugged or the atc fuse was pulled, and giving a no comm or c0550 if there was comm. There's a tsb on it from GM with an update to the tccm to fix it or replacing the tccm with an 05+ one, I'd be willing to bet it's a Dorman reman part from the early models without the update. The tsb is 02-04-21-006E for reference.
Love them Dorman Modules lol. There not scared to mess up anything on a vehicle. Its hard to imagine they make money with them crappy parts that get warrantied out all the time. Great video Ivan
Thanks Ivan for all your hard work, BBB industries are brilliant, I used it the other night to get a wiring diagram for 2004 Jaguar x type Automatic with reversing lights not working, the level of detail is superb! cheers sandy
In my line of work, we get reman parts. I often wondered, what was the repair to the module? I wish the reman people would give a report of what was repaired.
Yeah would be nice but then if the Raman firm told you too much who's to say you wouldn't do it yourself next time you saw the problem and that would then affect their income
Nice work Ivan. As usual !!! You and Kieth work well together. Plenty of vision patients for the wife on the Island. Maybe time to relocate to the Island. Real estate a bit pricey..... 10 cars a day you could afford living there no problem. There can never be enough diagnosticians....... Thanks for posting the this video. And thanks to you for all the effort you put into these videos Ivan!!!!!!
~14:05 you unplugged the connector with key on/engine running. This likely set codes observed @16:14. I would clear those codes and restart the vehicle and see if they come back. Good video by the way. I liked learning about your troubleshooting mindset. fyi - BBB industries has stopped publishing wiring diagrams .... bummer.
It always struck me as odd that the trend in new vehicles is to automate everything to buttons and switches. I like moving shift controls myself by hand, but evidently people who buy new vehicles like to pushbutton everything. Even the hatchback on our Subaru won't open without using a motor, it prohibits you from opening the hatch by hand.
100% agree. That is exactly why I drive an older Japanese SUV with a manual transmission, manual transfer case, and manual locking hubs. Most newer "electronic assist" systems are just designed to fail and become more of an inconvenience later on in the vehicle's life!
I have to ask do you drive a manual transmission vehicle with hand crank windows and manual locks? If not then you should know why manufacturers "automate everything to buttons and switches." It's what the buyer wants. Sure us viewers of videos like these that do our own repairs cherish mechanical reliability and simplicity. But we aren't the buyers that manufacturers target with new product. We tend to buy used and retain vehicles for longer periods of time than the target market; and, the target market that makes auto companies the bulk of their money isn't interested in "manually" operating their car as their parents did decades ago. When they spend their money on a new car, they want something "new" on it.
I recently spoke with a Mexican engineer working for Nissan Mexico. And he told me that back in the day when everything in a car was manual, 85% of drivers were male. Nowadays 50% of drivers are male and 50% female. Women started choosing cars with automated functions and manufacturers had to please their growing market since making cars only for men or only for women was cost prohibitive. It sounds pretty logical to me.
Pine Hollow Auto Diagnostics I have been driving my explorer four years without abs,4wd works flawlessly, does great in new england snow, that's why I don't even bother fixing it
Thank you for this video . I have a 2004 Chevy Trailblazer EXt with a 4.3 liter V6 engine. I had a heart attack in 2012, hospitalized 2017 & up until 2020 I hadn't driven my SUV. When it was returned to me the vehicle would rapidly rev up and accelerate. I've taken it to a mechanic who couldn't determine what causes this. Is the problem a disconnect between the engine, transmission & power train?
HELP!!!! 2004 Chevy Trailblazer When i turn the key all the lights on the switch flash on the back off. If i turn the switch to anyother possition no light comes on on the switch. If i leave it on any of the positions and turn the key off and then back on i can hear the TCCM and the Actuator up front turn on and then off. Ground & Hot is good at the Actuator, TCCM and Control Modul under the dash. Yes, I also tested the communication wire at the Control Modul. Still no lights at the switch and i have a service 4wd light on the dash. PLEASE HELP ME!!!
HAHA so what brought the module back...cliff hangar! Was it contact fretting between the terminals and during the backprobing the contact was regained, maybe a fitment issue hmmm, several other possibilities including or is it just another crappy Dorman product...makes you want to stay tuned in with some popcorn and beverage of choice. Nice stopping point Ivan! OK now that Part II came out I can disclose the C0550 is ECU/CCU and checksum test failed meaning Dorman module internal; failure DOA...no pulse...DNR!!
Top quality dorman parts are always a 10/10! I wonder if the transfer case motor has an internal short that caused all of this. OR perhaps the actuator might be going bonkers causing some electrical noise hmmm the actuator might even be a dorman part as well.
Ivan i have question that nobody wants to or just dont know , can i use the catalytic converter again after ive taken all that crap thats inside of it, i did it once to my 96 monte carlo and it ran great, it actually ran faster, whats your opinion.thks
If your vehicle has post cat o2 sensors it'll throw a code. The lack of back pressure might mess up your idle and fuel economy as well. Wouldn't fly for the inspection requirements in my area.
I laughed when I saw that Dorman box! THERE'S YOUR PROBLEM LADY! :D .... Dun dun daaaaaah! :D :D It's a wonder that company stays in business! That said, it's a wonder GM & Chrysler are still in business, but I digress ... :D This just reinforces the fact that my next major tool purchase is going to be a scope. Got to have one these days.
great video again Ivan. love your content. from my experience you shouldn't trigger date because you might miss the issue. especially if its a threshold issue
Who'd a thunk it?? Keith shows up, everything snaps back into service!! I once babysat some kids like that! Everything malfunctioned, right up until the parents returned, and SNAP, EVERTHANG WAS A FIXED!! Perhaps you should try what I did!! Spank the module, then send it to bed without the lights on!!
I had the same code diagnosed service 4x4 and it was a matter of low or no fluid in my transfer case behold no fluid filled up and drove in 4x4 and problem solved
Dorman is acceptable for door handles and random plastic body pieces. They also make a great nylon fuel line kit. But Dorman and electronics is a big NO-NO!
Ivan, none of your regular viewers would have called you a parts changer if you had said, needs a new module after discovering a dorman sticker on it. Lol
It is really sad that almost all aftermarket parts are so unreliable. I installed the driver window operator of my 2001 Silverado new OEM from Dorman and it lasted a week. O’Reilly’s was good to replace it but I still had to tear me door apart again. Is it possible to buy OEM parts that are as good as original but with all the original factory bugs worked out? I would gladly pay double for the best made in the USA by real conscientious people.
Awful like that Mitsubishi you did a while back with no comm and then all started working again after the wiring loom was rubbing on the abs control unit.....
after seeing several comments regarding DORMAN, what the actual f***? theyre asking for a aftermarket battle? sure, i will win every case in court with their multiple failures of their crap. AVOID!!! i cannot believe the customer suffered with their bad product being used. oh well. they suck anyway. first saw that module, i knew it was bad from get go. i can see every one cursing at them!
Those early 02-04 modules were known to fall asleep and not wake up till it was unplugged or the atc fuse was pulled, and giving a no comm or c0550 if there was comm. There's a tsb on it from GM with an update to the tccm to fix it or replacing the tccm with an 05+ one, I'd be willing to bet it's a Dorman reman part from the early models without the update. The tsb is 02-04-21-006E for reference.
Great channel, thank you for the work you put into all the videos.
I really enjoy them and always look forward to next one.
Love them Dorman Modules lol. There not scared to mess up anything on a vehicle. Its hard to imagine they make money with them crappy parts that get warrantied out all the time. Great video Ivan
Thanks Ivan for all your hard work, BBB industries are brilliant, I used it the other night to get a wiring diagram for 2004 Jaguar x type Automatic with reversing lights not working, the level of detail is superb! cheers sandy
Oh man, this is going to be good. I appreciate your path and process. It's fun to follow along and try to keep up!
Great video and great job finding that wire. Sad we can't get the BBB diagrams though.
In my line of work, we get reman parts. I often wondered, what was the repair to the module? I wish the reman people would give a report of what was repaired.
Agreed, A repaired module in my opinion is much more optimal (but not practical) since you knew the previous issue.
Yeah would be nice but then if the Raman firm told you too much who's to say you wouldn't do it yourself next time you saw the problem and that would then affect their income
Nice work Ivan. As usual !!! You and Kieth work well together. Plenty of vision patients for the wife on the Island. Maybe time to relocate to the Island. Real estate a bit pricey..... 10 cars a day you could afford living there no problem. There can never be enough diagnosticians....... Thanks for posting the this video. And thanks to you for all the effort you put into these videos Ivan!!!!!!
I wonder how long that module worked for before it dropped its guts
wow now a part two . time to start wiggling wires and checking pin fitments. patiently waiting.........
Oh boy, Ivan almost got slid. Good info for me as I have a 2002 TB
Eric Corse if your abs module ever “fails” fix the ground under the driver side door on the frame. ;)
Thanks
"I guess we aren't done..." Nope! See you in part 2. Thanks!
~14:05 you unplugged the connector with key on/engine running. This likely set codes observed @16:14. I would clear those codes and restart the vehicle and see if they come back. Good video by the way. I liked learning about your troubleshooting mindset. fyi - BBB industries has stopped publishing wiring diagrams .... bummer.
It always struck me as odd that the trend in new vehicles is to automate everything to buttons and switches. I like moving shift controls myself by hand, but evidently people who buy new vehicles like to pushbutton everything. Even the hatchback on our Subaru won't open without using a motor, it prohibits you from opening the hatch by hand.
100% agree. That is exactly why I drive an older Japanese SUV with a manual transmission, manual transfer case, and manual locking hubs. Most newer "electronic assist" systems are just designed to fail and become more of an inconvenience later on in the vehicle's life!
I despise ABS in any weather conditions. ABS is good for people who panic and mash on the brake pedal as hard as they can lol.
I have to ask do you drive a manual transmission vehicle with hand crank windows and manual locks? If not then you should know why manufacturers "automate everything to buttons and switches." It's what the buyer wants. Sure us viewers of videos like these that do our own repairs cherish mechanical reliability and simplicity. But we aren't the buyers that manufacturers target with new product. We tend to buy used and retain vehicles for longer periods of time than the target market; and, the target market that makes auto companies the bulk of their money isn't interested in "manually" operating their car as their parents did decades ago. When they spend their money on a new car, they want something "new" on it.
I recently spoke with a Mexican engineer working for Nissan Mexico. And he told me that back in the day when everything in a car was manual, 85% of drivers were male. Nowadays 50% of drivers are male and 50% female. Women started choosing cars with automated functions and manufacturers had to please their growing market since making cars only for men or only for women was cost prohibitive. It sounds pretty logical to me.
Pine Hollow Auto Diagnostics I have been driving my explorer four years without abs,4wd works flawlessly, does great in new england snow, that's why I don't even bother fixing it
Lucky that wasn't Eric O. who opened the door, to find a DOA Dorman module. He would've flipped out, tore it out, and shot it.
Enjoyed the video Ivan
I've got a 2004 trailblazer. Has "Service 4 wheel drive" light on, but no lights at all on the 4 wheel drive selector switch. Any suggestions?
Same thing I got....did you ever find out what your problem was? Thanks....oh mines a 2002. Looks like problems with these
Thank you for this video . I have a 2004 Chevy Trailblazer EXt with a 4.3 liter V6 engine. I had a heart attack in 2012, hospitalized 2017 & up until 2020 I hadn't driven my SUV. When it was returned to me the vehicle would rapidly rev up and accelerate. I've taken it to a mechanic who couldn't determine what causes this. Is the problem a disconnect between the engine, transmission & power train?
The video thumbnail is a classic!!
What would show, if anything on a volt meter hooked up to the com line? Just for us folks without a scope. Thanks Ivan.
DVOM would just show an average voltage, so depends on the amount of activity on the line at the moment!
Mine doing the same thing, I wonder if the wire is broken on my trailblazer?
Only one way to find out
HELP!!!! 2004 Chevy Trailblazer When i turn the key all the lights on the switch flash on the back off. If i turn the switch to anyother possition no light comes on on the switch. If i leave it on any of the positions and turn the key off and then back on i can hear the TCCM and the Actuator up front turn on and then off. Ground & Hot is good at the Actuator, TCCM and Control Modul under the dash. Yes, I also tested the communication wire at the Control Modul. Still no lights at the switch and i have a service 4wd light on the dash. PLEASE HELP ME!!!
can I send you some Dorman stocking stuffers for you to share with Eric O?
As long as they are made in China xD
Haha I laughed when I saw Dorman! I'd want it out of my car even if it wasn't the culprit. Looking forward to part 2!!! :)
I think it was the result of a poor shot by the parts cannon as you will see in Part 2 ;)
HAHA so what brought the module back...cliff hangar! Was it contact fretting between the terminals and during the backprobing the contact was regained, maybe a fitment issue hmmm, several other possibilities including or is it just another crappy Dorman product...makes you want to stay tuned in with some popcorn and beverage of choice. Nice stopping point Ivan! OK now that Part II came out I can disclose the C0550 is ECU/CCU and checksum test failed meaning Dorman module internal; failure DOA...no pulse...DNR!!
I drove my envoy this morning and it was fine then 4 hours later my light came on saying 4x4 service I’ve never used it or anything any ideas?
Top quality dorman parts are always a 10/10! I wonder if the transfer case motor has an internal short that caused all of this. OR perhaps the actuator might be going bonkers causing some electrical noise hmmm the actuator might even be a dorman part as well.
I still have four more PHAD vids to catch up on. I may have to quit my real job and become a full time viewer.
Good vid, Is this the GMC from Keiths sneak peak?
Yup sure is!
I'm about too buy s10 zr2. But the odometer does not display the miles. Is there any way to know the miles.
Tendencia Automotriz The odometer can be read from the instrument cluster using a scan tool
Thanks Ivan great video thanks
Thanks, Jesus! It gets more fun in Part 2 :)
Ivan i have question that nobody wants to or just dont know , can i use the catalytic converter again after ive taken all that crap thats inside of it, i did it once to my 96 monte carlo and it ran great, it actually ran faster, whats your opinion.thks
If your vehicle has post cat o2 sensors it'll throw a code. The lack of back pressure might mess up your idle and fuel economy as well. Wouldn't fly for the inspection requirements in my area.
It would defeat the purpose of a catalytic converter but if that is OK then go for it lol
GM still makes straight 6's?
I laughed when I saw that Dorman box! THERE'S YOUR PROBLEM LADY! :D .... Dun dun daaaaaah! :D :D
It's a wonder that company stays in business! That said, it's a wonder GM & Chrysler are still in business, but I digress ... :D
This just reinforces the fact that my next major tool purchase is going to be a scope. Got to have one these days.
Good vid ivan....BBS diagrams are no good for us in the uk limited euro modelss in there...we have nothing free over here...looking forward to pt2
blab blaaah blab. love that theres your problem lady!! nice vid comrad .thankx john.
But can i ztill use it, im in tx so tests r out the window
One Hellava cliff hanger!
I got this when the control knob stopped working.
So are you saying you wouldn't let Dorman carry your bags from curb to room?
I’ve got an 02 with random lost comms codes to every module. Some day I’ll find the culprit. Lol
Alex Jennings I'd hook up to the can high and can low lines with a scope and get wiggling wires mate when youvseethe drop out bingo!
Yea, i've been looking for a decent scope that isn't too expensive.
What would cause my 4 wheel to slip at slow speeds
What do you mean by slip?
Sounds like a abs/ wheel bearing problem at low speeds had same issue NO MORE
great video again Ivan. love your content. from my experience you shouldn't trigger date because you might miss the issue. especially if its a threshold issue
Who'd a thunk it?? Keith shows up, everything snaps back into service!! I once babysat some kids like that! Everything malfunctioned, right up until the parents returned, and SNAP, EVERTHANG WAS A FIXED!! Perhaps you should try what I did!! Spank the module, then send it to bed without the lights on!!
@6:28 Eric O at SMA, "there's your problem"
I had the same code diagnosed service 4x4 and it was a matter of low or no fluid in my transfer case behold no fluid filled up and drove in 4x4 and problem solved
But wait! There's more!
Order now, and get FOUR FREE STEAK KNIVES when you buy our standard kit!
So - Dorman is not acceptable?
Dorman is acceptable for door handles and random plastic body pieces. They also make a great nylon fuel line kit. But Dorman and electronics is a big NO-NO!
Isuzu engine right?
Even Eric O's dog thinks the Dorman module is at fault, I didn't know BBB industries was free thanks
Ivan, none of your regular viewers would have called you a parts changer if you had said, needs a new module after discovering a dorman sticker on it. Lol
good deal Ivan, sam
D@mnit...woulda been first if I wasn't watching Eric O's new video!
Doorman! There's your problem lady!
ahh, "Doorstop" strikes again!
Everyone, please ignore 6:27. Thank you.
Actually just ignore the video
Do you want to aftermarket battle?
It is really sad that almost all aftermarket parts are so unreliable. I installed the driver window operator of my 2001 Silverado new OEM from Dorman and it lasted a week. O’Reilly’s was good to replace it but I still had to tear me door apart again. Is it possible to buy OEM parts that are as good as original but with all the original factory bugs worked out? I would gladly pay double for the best made in the USA by real conscientious people.
Awful like that Mitsubishi you did a while back with no comm and then all started working again after
the wiring loom was rubbing on the abs control unit.....
Buy a Power Probe.
Think transfer cases are all made by Chrysler New Process... Chrysler/Dorman go together
Ok
first!
DORMAN up to no good once again
transfercase module.... what a joke. all you need is a lever to pull
after seeing several comments regarding DORMAN, what the actual f***? theyre asking for a aftermarket battle? sure, i will win every case in court with their multiple failures of their crap. AVOID!!! i cannot believe the customer suffered with their bad product being used. oh well. they suck anyway. first saw that module, i knew it was bad from get go. i can see every one cursing at them!
Ok