2004 GMC Sierra 1500 Questions

All 2004 GMC Sierra 1500 Questions

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The rear end is making a loud bang that garage now says it's the difference is this possible and why would they have not recognized this while installing the new transmission not happy at all could someone please he...
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...
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...
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.
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, ...
Not sure if this is a 2WD, 4WD issue, or an all out transmission problem. Thank God for ebrakes. PS. Hunting season is not over, no time to fix :)
I was out scouting elk with my wife during the first sloppy snow when my 4x4 quit on us. I checked all the fuses, and pulled the front axle actuator out and it is working fine. You can hear the transfer case working w...
I have installed new switch new actuator motor also had it programmed by GMC still will not engage
to be replaced. I checked the wires under the seat and doesn't look like any are broken. The heat will turn on but kicks off after about 20 seconds and if the passenger turns theirs on it kicks off immediatley. I lik...
Lie the question said, the ABS is engaging while driving slow and turning. It only happens occasionally and isn't a constant problem. I can feel it in the pedal as well as the responsiveness. I can hear a rapid ticki...