How hot should a Duramax transmission be?

If you own a 2001-2004 LB7: Duramax your normal operating temperatures will run around 160-180 degrees. These transmissions will warm up when towing or driving in the summer months. 200-225 is very common when the ambient air temp is 80-100 degrees and your transmission is under an increased load.

Is the temperature gauge hot but not overheating?

Temperature gauge hot but engine is not overheating. have the same problem? Have you checked your coolant level lately? I would start there. helpful? The temperature gauge can show hot without the engine overheating which still means that is a problem. To tell for sure if it is a gauge or a cooling system problem use a

What happens when the transmission temp is too high?

When the temperatures rise above the normal transmission temp, the transmission fluid will lose its viscosity, and this causes it to oxidize. The fluid varnish starts destroying the internal components of the engine like the valves.

Is the transmission on my 2500HD overheating?

05 2500HD 6.0L 4L80e Transmission Overheating after this brutal Winter! First I’d like to say hi…Newbie Here. Great Condition. Never had a problem with this truck until this past winter, Brutal! I pulled an engine code P0894 (Component in Transmission Slipping).

What’s the transmission temp on a 3.8 engine?

The 3.8 engines had ALOT of problems because of dex I realize this is an old post, but my transmission temp usually runs around 120, even plowing. It has never exceeded 150 until today while just normal driving. It’s been running about 170.

Is the transmission too hot in a truck?

We ran the truck in park for about 20 minutes and drove it for about 20 miles, in traffic and side roads. The transmission temperature did not rise fast and did not exceed 220 degrees, which is still too hot on an 85 degree day. It stayed a little below 200 for longer than the past 2 months or so and no codes.

How to troubleshoot a temperature gauge in a car?

Temperature gauge troubleshooting begins with isolating the problem either to the gauge, sending unit, fuse or wiring. As with any electrical troubleshooting it is best to check all wiring connections are clean, tight and free of corrosion. The following process must be preformed with the ignition key turned to the “on” position.