TEMP gauge reading when towing- Duramax Diesel

[RidgeRunner]

So my 05' Silverado 2500HD diesel, while running like a champ, seems to run warmer when towing. DOES YOURS ??
I'm pulling 8k plus trailer
The gauge runs 1/2 the dial, or about 200-210f. Normally it runs about 180ish.
Any other duramax owners seeing this ??

 

[William R. Thomas]

Talk about a coincidence, I also own a 2006 270 Amberjack. In addition, I also own a 2005 Silverado 3500 Dually with a Duramax engine and Allison transmission. I am located in Pennsylvania, where there are plenty of hills. When towing my boat over 100 miles to Lake Erie in the spring, my temperature gauge will rise to the center peg, or sometimes slightly above, depending on outside temperature. This fluctuation is normal. I have flushed my cooling system, and even replaced the Thermostats (there are two in the engine) and it still behaves the same. Hope this was helpful to you.

Bill

 

[Lazy Daze]

That sounds about right. The cooling system/engine was redesigned on the 6.6 (compared to the 6.5) be more efficient. Along with that, means the temps will run higher (which is more efficient). But it was designed to run at those temps (which are not too high, by the way) and be safe while doing so. I see those temps all the time on 6.6's.

 

[RidgeRunner]

Thanks for the feedback guys. My heart rate changed, as well as my towing plans when I first saw the temp gauge. Very pleased to see this is the normal

 

[BlewByYou88]

Ya, I'm running an 06, (6.6 LBZ) she gets about that same range when towing up north. My Tranny temps get up there a little too. Mu buddy found on a forum where you can flip the tranny cooler to be in the very front of the other coolers (Intercooler, and radiator) to get cooler tranny temps)....Still need to do it to mine.

 

[bbwhitejr]

I have an '07 Duramax/Allison LMM. Mine runs 210* 99.9% of the time whether I am towing my '06 260DA or not. Occasionally when it is really cold, it will run in the 190* range. My transmission runs 100* over the outside temps when towing. If it is 95* outside, seeing 195* is common. Fluid and spin on filter changed every 50k miles and never an issue. Fluid always looks brand new, but makes me feel better.....

Bennett

 

[RidgeRunner]

I'm feeling better about this all the time!

I have an '07 Duramax/Allison LMM. Mine runs 210* 99.9% of the time whether I am towing my '06 260DA or not. Occasionally when it is really cold, it will run in the 190* range. My transmission runs 100* over the outside temps when towing. If it is 95* outside, seeing 195* is common. Fluid and spin on filter changed every 50k miles and never an issue. Fluid always looks brand new, but makes me feel better.....

Bennett

 

[cfd95]

This was a problem for the 05 LLY motors. (running hot or overheating when towing)
GM had a tech service bulletin for it.
Here is the bulletin
http://ww2.justanswer.com/uploads/jettadan1/2010-12-06_174625_overheating.pdf

Gm corrected the problem in 06 with the LBZ Motor with a larger fan and radiator

210 is not overheating
I have an 07 classic with the LBZ it will run 210 on a hot day with the a/c on.
A rule of thumb for Transmission temps on these is they usually run 100 degrees hotter than the outside air temp.

 

[SCORPIO]

It's normal for any engine to run slightly hotter when performing more work. So long as you are staying in the normal range of operation for your engine, it is perfectly normal and expected. I see similar increases in temps when towing heavy with my Powerstroke, but still in normal range so no worries.

 

[BurgundyS24]

This was a problem for the 05 LLY motors. (running hot or overheating when towing)
GM had a tech service bulletin for it.
Here is the bulletin
http://ww2.justanswer.com/uploads/jettadan1/2010-12-06_174625_overheating.pdf

Gm corrected the problem in 06 with the LBZ Motor with a larger fan and radiator

210 is not overheating
I have an 07 classic with the LBZ it will run 210 on a hot day with the a/c on.
A rule of thumb for Transmission temps on these is they usually run 100 degrees hotter than the outside air temp.

Have an 07 lbz as well. Runs 210 all day long. Glad I'm not in the 05 truck as I pull a trailer constantly


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