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GMC Yukon Denali Questions

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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.
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