cruise control and engine code
While travelling with my 32' fifth on and doing a moderate hill my truck downshifted hard again and set off the engine light.
I just replaced the NSBU switch and flushed the coolant , changed the filters.
Any thoughts on this or is there an update from GM that might help.
Only does it with the trailer on and hills. The trailer weighs about 11000-12000 lbs. Really not that heavy.
2005 gmc 3500 c/c 4x4 dually 2015 Sierra 377FLIK 14,000lbs
Rebuilt Allison w/ billet torque converter and upgraded clutches
lly Duramax
edge juice w/attitude
Kennedy boost stick
banks air box
MBRP 4" SS
egr blocker plate and finger stick
head studs