450
questions

Could it be the master cylinder

Breaks going to theffloor

I have replaced the relay with no luck. I had planned on changing the multi function switch but I have read it is only the issue if it is clicking. Mine is not. Any other ideas. I have checked all the fuses as well.

If I hit a bump or hold the window button and tap the center console they all come back on do they have a common ground what is the common denominator in the center console for all three?

I replace the gas cap but the light still keeps going on and off

front axle wheel bearings only

the 30 amp fuse controls the driver seat and both passenger windows and seat. when i replace the fuse it blows out after 5 minutes. the fuse also controls the heated seat on the driver side

Checked alternator and battery not the problem. I will leave it sit for a few minutes and it will start right back up and maybe die again a little while later. Started again this morning and then died about 5 miles into my drive and pulled over. Waited for 10 minutes or so and it started up again. While driving on freeway the battery light will quickly flash and will start up again without pulling over. Please any advice?

Looks like I have the same issue as many others...electrical. My battery keeps getting drained by something. No one can figure out. I will get off a 13 hr shift, car starts up fine. Drive to market, shop, car starts, drive to gas station, fill tank, car dead. Random dying. Was told last year it was my dvd player. Took the fuse out and it seemed to be ok. Now it's doing it again. Last week it was in shop for 2 weeks, they replaced battery so it won't do it. Ugg. Today ABS light flashing and beeping, "service stability" flashing and car is trying to stop as I accelerate. Completely unsafe! Unplugged fuse to ABS and I can at least drive. So frustrated!! Replaced battery 6x, alternator 2x....not to mention transmission at 85,000 miles. Will NEVER buy another!

the back door isn't automatically closing it starts, when it reaches half the way in reopens.

During rapid acceleration, engine initially stalls, then accelerates. Is it bad fuel, dirty fuel filter, or what? I can't find common agreement that the 2005 gmc has a fuel filter.

A week ago my denali stopped going into park. It just stayed in reverse. The lever would go all the way up, but the dashboard light stayed at reverse. This morning i went to start my car (by putting it in neutral since i cant get it to register in park) and now tge light on my dash just stays in reverse. I have no idea what im doing, but need to get this fixed by myself. Any advise is appreciated, the more detailed the better.

I have a 6.0 liter engine and was getting 6-12 mpg in town and 14-28mpg highway. My fuel pump was just replaced and I am now reading 18-27 mpg in town and 6-7 mpg highway. Idle is high and car self propels. I can drive several miles without ever touching the gas pedal and when I made a u-turn after driving without touching the gas for at least 3/4 mile it picked up speed. I think the mechanic may have installed the wrong had pump because he seemed very surprised when I mentioned that my car had econo boost. Any advice is greatly appreciated !

is this normal, should i get it looked @ while its warrented thank you.

when i push the gas pedal my denali starts to make a really loud noise not grinding or clunking but more like a hmmm its only heard inside, the service ride control light is on and there where larger tires on it at one time. the transmission fluid looks normal and nothing else is getting hot any suggestions please help. thanks

4wd makes a bad noise in 4wd gm says theres a recall on other vins but not mine but i have the same problem what do i need to do