2010 GMC Sierra 1500 Questions

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with a full tank what could be the problem ?please help
I went off roading today and suddenly my transmission is not shifting.
HVAC randomly switches to heat on drivers side when a/c is selected. Pass side functions normally. Have to play with inside/outside air selector to fix. Air doors seem to function properly, just not always as they sho...
HVAC randomly switches to heat on drivers side when a/c is selected. Pass side functions normally. Have to play with inside/outside air selector to fix. Air doors seem to function properly, just not always as they sho...
Is this normal for dash lights to be on when the day time running lights are on. I have a 2008 G6 dash lights are out only come on when dark. I just bought this truck so I don't know if dash lights must be on I am con...
"Service air bag" displayed on DIC.code reader says impact sensor 7,8 fault
HAS FUEL, GOOD FUEL PRESSURE GIVING ME AN EMISSIONS CODE. TRIED NEW GAS CAP. HAVE BEEN TOLD COULD BE ELECTRCIAL...WHERE SHOULD I START? IT TRIES TO START BUT WILL NOT TURN OVER. I HAVE A NEW BATTERY ALSO
Does the windshield washer resivor need to be removed?
OBD-II Scanner throws a code P0309 (misfire cylinder#6).. My truck feels like its stuttering when i put it under load..
We have had this problem for over a year. It has been to our trusted GMC dealer shop several times with no resolution of the problem. VERY FRUSRATING!! Help, please!
every quarter tank of gas gets about 20 miles