LBZ Duramax Thermostat Replacement (Quickest Way)
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- Опубликовано: 8 июн 2020
- Just a quick video showing how I changed the thermostats in my 2007 Classic Sierra 2500 with the LBZ Duramax. All the tutorial videos I came across showed removing the belt and unbolting the ac compressor to do the thermostat swap. I managed to do it without doing that and it was a super easy job!
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good job, I would suggest you disconnect the batteries before messing with harness connectors.
You can never go wrong with Duramax content.
More of everything.you make everything worth watching .i changed my share of thermostats in my life but some how you made me watch the whole process keep it up big man
That’s awesome to know. Thanks dude
i guess Im kinda off topic but do anybody know a good website to watch new tv shows online?
@Zev Saint Flixportal =)
@Reece Kairo thank you, signed up and it seems like a nice service =) I really appreciate it!!
@Zev Saint No problem :)
Great video I got mine swapped out in about an hour. Thank you very much.
Youre welcome sir!
Just did this yesterday by only removing the resonator, the resonator bracket on the thermostat housing and loosening the oil fill tube to make a little more room
Just did my thermostats. And it definitely has a fuel map change I can even tell the amount of smoke it is dumping now. It definitely was holding back when the temp was too low.
What I was told is it runs richer until it’s up to temp in an effort to get the engine warmed up.
I'm about to change my thermostat in my 06 duramax with 375k miles I was hoping I didn't have to pull everything off thanks for the video
That’s why I made it! Glad it helped
Thanks for video you described exactly what is going on with my lbz 2007 cat eyes.My temp gage needle is just starting to touch large line marker that is dead center between 160 large marker and 210 large marker.
Yes the whole fuel map thing is basically controlled from the coolant temp. If it is running cooler then the ecm basically thinks it's not up to temp yet and does dump more fuel through it.
I'm pretty sure I'm in the same situation. I bought my LBZ about a month and a half ago and it hasn't ever gotten above 165º. I'll be changing the t-stats tomorrow. Cheers!
Mine too bought my three days ago and its hasnt gone above 170
@@mikem8475 Since putting the new thermostats in, it runs 180-190 (even in single digit ambient temps) depending on load. Better gas milage and more power.
@@andrewt248 mine too runs between 181-185
I did your method. When I pulled out the Breather screw I put on my shop vac that I previously washed out. Probably could not fill a shot glass with the coolant I lost
Then opened the reservoir. Drained it dry
Definitely helped
Thanks man I am so glad!
Here from the escalade update vid 9-18-22. Funny when you said not my car walking by the Phantom
Yeah the irony i never would have thought at the time 😂 now it IS my car 😂
Asking for a update. Did the truck get better mpg?
Yes a little bit. My average over a couple weeks is always around 18-19
This is where it’s a smart idea to cut your passenger rad hose and then install a drain valve.
It didn’t lose much coolant. Way less than I anticipated
@@Stapleton42 that’s good Mine dumped everywhere. The drain valve is a cool idea but since this original comment I’ve caught it dripping several times. Even sold my duramax since the comment lol. I miss it man so much.
Did check engine light go off?
Yes it did!
Any word on the better mileage ? My lbz is doing the same thing, my high temp thermostat is shot and I’m not getting the greatest mileage .
It did go up a bit actually
What’s quite a bit? Lol my LBZ has always run at 180 unless I’m pulling my trailer or running it hard
@@keithellett4283 my LBZ does too. Ran 181 going 72 on the hwy for 70 miles. So now I’m curious if my tstats are bad or going bad. 244k miles
@@derekm3304 yeah my LBZ just turned 90k. I really don't drive it often, its my tow rig for my big trailer so I never noticed it until I saw this on RUclips. if I don't have a trailer I run like 180 max unless I am beating on it OR if I am pulling a trailer then it runs "normal" 200 temp. I have the parts to do it but i just need to get it done . lmk what your result is tho.
I'm getting ready to change mine, but mine has the dual alternator option and the second alt is next to the AC pump and would need to come off too, this looks way easier, dealer wanted $700!!!! I'll do it for $30.
Worked well enough for me!
My 06 Lbz barely gets to 1/4 on the temp gauge (between 160-210) i noticed I’m only getting about 10-12 mpg, after you fixed the issue what temp are you running normally? And mpg?
I get 9-10 towing, 12 city, 16-17 highway, truck is stock and I don’t know if the thermostats are bad or not, but with the age of the truck I’m gonna replace them and flush the coolant system in the near future as preventative.
My truck has been fairly well kept and maintained, rolled over 541k miles today, I have been thinking about flushing the heater core when I replace my thermostats, as my heat is almost non existent but it has been a very good truck to me other than that,
Why is your check engine light on?
Probably a P0540 code, intake heater circuit, from doing a EGR delete.
It always had a light on for low engine coolant operating temperature. Ever since I did the thermostats it’s been gone!
So a warmup cycle LB7 still gets better mileage than a deleted LML? Lol.
Probably does if it’s a dually. I’m not sure how a ccsb single wheel LML truck would do but I’d imagine it’s a lot better than my dually lol. Just now going from PA to SC to FL the dually got 11-12 mpg average (on the dash) towing probably almost 10k between the LBZ and trailer weight.
Also I meant LBZ not 7. I always wonder if a 3/4 ton diesel would get better mileage than my gas half ton with my route. I get 12mpg average stopping and starting over 20 times a day.
Did you got a bwtter milage?!?!?!?!
Yes a little bit!
You shoulda said something. I had a set of therms down at the house you coulda had
Did you see a difference in mpg after this ?
Yes I did actually
@@Stapleton42 do you roughly no how much? I'm doing mine in a couple days. My truck warm going 65 down the freeway is between 130 and 140. Averaging 8 to 10 mpg
@@slammedls400 i have bad stats for a whole year in my 07 classic lbz 4x4. I get 14mpg. I think you may have bad injectors of you are getting 8-10. Get your balance rates checked. Its worth it. My buddy lost his because he suffered from injector denial for too long
@@slammedls400 I averaged 8-11 with bad thermostats. Fixed it and it went to about 14-15. Checked for a boost leak and found one. Back up to normal.
take the oil fill tube off... will make it easy
In the process of changing lower radiator hose and Flushing cooling system and changing out both thermostats. I have an 06 GMC Sierra 2500HD SLT 6.6 DMAX LBZ 4X4. By the way best truck I have ever owned going on 13 years now. I use to get 20 MPG on the highway not towing anything. My mileage is now down to 12 MPG and I believe both thermostats are wide open. Truck barely makes it to 180 degrees running it hard. Keeps throwing a code also stating engine not reaching op temp. Fun with some cussing probably!!! So check your ECT and if it is running cold can guarantee your fuel mileage will drop substancially
Absolutely! Mine never ran that cold but I only had one stuck open
Working on a a diesel 10 feet from a rolls lmao
Yeah really lmao. It’s not my car 😂
I would get rid of the K&N air filter, it will ruin your engine. The stock filter gets more than enough air through it. The K&N let's dirt in the engine. I say this from experience. It is a gimmick you don't need . People just trying to sell you shit.
How mental are you
Thanks for video you described exactly what is going on with my lbz 2007 cat eyes.My temp gage needle is just starting to touch large line marker that is dead center between 160 large marker and 210 large marker.