Duramax pulling a heavy load

Semi was stuck Duramax helped get him out

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Duramax LMM Towing Load up Hill
Towing a deckover trailer loaded with a full size f250 up 2 hills in my 2008 duramax lmm. Tuned with EFI live set on dsp 3-heavy tow mode. 5" turbo back Exhaust.

Chevy Duramax Pulling Power
Chevy Duramax pulling a 80+ foot tree that is over 3 foot at the stump and yes it could have been 15 seconds but bald tires you know how that is.

Duramax pulling out a semi

Duramax Backhoe Haul Test
Wanted to test the duramax in how it handled the weight. Also the trailer brakes didn't seem to be working and the tow/haul mode doesn't turn on like the button is wore out.