GMC Sierra 1500 Questions

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Air only blows out of defrost vents (not dash vents). Air currently only blows hot regardless of temp setting or if a/c is on. Passenger window will not roll down. Code reader also does not work. Is there a...
TO AVOID HAVING TO DEAL WITH THE 4X4 KICKING IN AND OUT
Will run on either.gas gauge reads empty with full tank.fuel pump won't run. No signal to fuel injectors. Ran fine turned off 5 min later no run. Gas gauge was working, now not. New fuel pump done, no luck. Fuel pump ...
Replaced throttle body gasket wasn't it then replaced throttle body it self because only water goes through intake is two lines on bottom of throttle body that wasn't leak either and there's no water in oil at all and...
The truck went into neutral going down the road. I coasted to the side ofr the road and tried to put it in park, I heard this God awful grinding noise, like you are shifting a standard without pushing the clutch in. I...
I've had this truck for about 6 months. When I first got the truck I left it idling for about 45min shut if off then it wouldn't start. Battery was good. took to dealer they found a short in the wiring harness. A few ...
Motor has no oil pressure
with a full tank what could be the problem ?please help
makes that grinding sound like they do when they first go out, It's done it twise a couple of week's ago and did 3 time's yesterday is it the ignition switch or the starter
Front right bucket seat has something loose on the backside of the seat. I want to take off plastic panel to see what is in there. Looks like it pops off. Didn't want to tear it up as it is a nice pickup. Drives me nu...
When I turn the key on the ON position the lights on the 4wd selector switch the buttons come ON then go OFF. Then the SERVICE 4WD light comes on. None of the buttons responded. I have another 04 gmc sierra 4wd I took...
leaking bad need to put coolant every time i drive somewhere
on my 2007 gmc sierra i have a problem with the driver side rear lights my brake light works fine my directionals work fine but my daytime running lights do not work my question is is there a seperate fuse for drivers...
When I turn the cruise on the light comes on on the steering wheel control but I am unable to set the cruise control. It will not kick in. What is involved to fix and a possible cost for the repair.
when trying to shift in to 4wd high light blinks then goes back to 2wd.can hear it trying to shift but wont.never had a maesage say service 4wd or any thing. worked in auto and 4wd high just a couple weeks ago.
When I'm accelerating it bogs out at 45 mph ideas on what to do?
First flushed the heater core and changed the thermostat heat worked for a few hours then stopped.. Just a bit ago changed filters and circuit board worked for an hour! All doors are opening as should it's just blowin...
During the hot of summer, the AC settings do not blow any cold air. The freon is full and the fan runs, just only pushes out hot air. During the winter the heat doesn't work, again the air comes through from the fan, ...
And some of the light on dash want show up either like high beam abs or odo