2007 Yukon XL 1500 is dead!
Won't start (won't crank)
The "accessory" key position doesn't turn anything on
The "run" position turns the HVAC and radio on, as well as idiot lights and dash text readouts, but that's about it (The actual gages don't move - I know it has a full tank of gas, but the fuel gage sits on empty).
No shifter position on dash. I can shift out of park without my foot on the brake.
No power locks or windows.
No rear hatch power (I can't open the tailgate).
No interior lights.
No gages.
No 4 way flashers.
If I turn the headlight switch to "ON', the headlights come on, but no dash illumination.
Idiot lights seem normal-ish (I honestly don't watch them close enough when I start the car to know what normally comes on). I don't see anything telling me that it is in an anti-theft mode.
The little car with a padlock on it turns on for a bit, but then it shuts off.
I haven't tried every little thing, but here are a few things that work:
Radio does work
HVAC does work
Homelink does work.
Power mirrors work.
This all stared on Thursday when I wanted to drive the Yukon to my Dad's house. It seemed "dead' when I tried to start it. I proceeded to get out jump packs, chargers etc. The thing wouldn't even attempt to start. I do recall that I was surprised the volt meter never moved when I turned the key on.
Maybe I created a problem by all the jump starting attempts, key on-off, etc. Burned out a computer somewhere? Put it into anti-theft mode? However, I am starting to think that something went wrong that made me think it had a dead battery, but it was really something else.
I have looked everywhere for any signs of harness issues (animal chewing?), and I haven't found anything suspicious. I have checked all the fuses I can find.
Battery cables are in good shape, ground cables seem good. I will loosen an retighten all the grounds I can find tomorrow.
PLEASE PLEASE help!
Won't start (won't crank)
The "accessory" key position doesn't turn anything on
The "run" position turns the HVAC and radio on, as well as idiot lights and dash text readouts, but that's about it (The actual gages don't move - I know it has a full tank of gas, but the fuel gage sits on empty).
No shifter position on dash. I can shift out of park without my foot on the brake.
No power locks or windows.
No rear hatch power (I can't open the tailgate).
No interior lights.
No gages.
No 4 way flashers.
If I turn the headlight switch to "ON', the headlights come on, but no dash illumination.
Idiot lights seem normal-ish (I honestly don't watch them close enough when I start the car to know what normally comes on). I don't see anything telling me that it is in an anti-theft mode.
The little car with a padlock on it turns on for a bit, but then it shuts off.
I haven't tried every little thing, but here are a few things that work:
Radio does work
HVAC does work
Homelink does work.
Power mirrors work.
This all stared on Thursday when I wanted to drive the Yukon to my Dad's house. It seemed "dead' when I tried to start it. I proceeded to get out jump packs, chargers etc. The thing wouldn't even attempt to start. I do recall that I was surprised the volt meter never moved when I turned the key on.
Maybe I created a problem by all the jump starting attempts, key on-off, etc. Burned out a computer somewhere? Put it into anti-theft mode? However, I am starting to think that something went wrong that made me think it had a dead battery, but it was really something else.
I have looked everywhere for any signs of harness issues (animal chewing?), and I haven't found anything suspicious. I have checked all the fuses I can find.
Battery cables are in good shape, ground cables seem good. I will loosen an retighten all the grounds I can find tomorrow.
PLEASE PLEASE help!
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