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Travel_glampers's avatar
Travel_glampers
Explorer
Feb 06, 2020

2009 Silverado 3500 HD Duramax LMM overheating

I have the above truck towing a 14,000 pound fifth wheel. When the truck was new, it overheated going up to Eisenhower Tunnel (11.000+ feet) in June. Both the engine and transmission (Allison) tempe...
Tow Vehicles
Bionic_Man's avatar
Bionic_Man
Explorer
Feb 07, 2020
If you didn’t get some sort of warning light you didn’t overheat.

Unless you are a huge fanboy of your truck manufacturer, you’ll notice an increase in temps when you are pulling in extremes. Somehow the guys with the name of their favorite brand in their screen name or posted boldly in their signature avoid it. ??

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