Question about GMC Yukon XL

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Electrical problems I have an 02 yukon xl. The other day I went to start it and it fired up for a sec and then died. The entire electrical system went dead. When I would turn the key only the 2wd / 4wd selector lights would flash for a sec. I disconnected the battery overnight and reconnected it in the morning. The truck fired right up and has been fine for the last two days. Any ideas what this could be? I'm sure it will happen again and the next time I might not be lucky to be in my driveway when it happens.

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  • 13 Answers

Were the battery terminals tight ? Corroded ?

Posted on Feb 09, 2014

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Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: 2005 Jeep Grand Cherookee sometimes won't start

This could be something simple. Your starter draws far more power than anything except for the a/c clutch (not in play here) Since all accessories are functioning, it's likely that the battery terminals are oxidized. A high-draw item will actually break the connection temporarily. This condition will also change with humidity and temperature. Remove them and use a small wire brush or sandpaper to clean the battery posts and the inside of the connectors on the wires themselves. If you have done this and still have a problem, then you should start looking for other larger problems.
Good luck

Posted on Jan 08, 2009

  • 37 Answers

SOURCE: 1999 Durango will not start, no fire

ALTERNATOR NOT CHARGING

Posted on Apr 06, 2009

  • 91 Answers

SOURCE: 2002 dodge ram 1500 flashing red light and dead

When you disconnected the battery, you tripped the alarm which locked down everything. In your owners manual, look under the security or alarm system. It will tell you how to disarm your particular alarm system. If I am not mistaken on these you put the key in the drivers door and lock and unlock it 2-3 times. If you do not have the owners manual, you can contact dodge and they will walk you through it.

Posted on Apr 10, 2009

  • 1 Answer

SOURCE: 2007 yukon xl battery dead recharged battery will

We had the same issue with our 2007 Yukon Denali XL. Died on us twice after sitting for short periods of time; once we watched a DVD with the engine off and battery died within 10 minutes. The dealership kept it overnight to troubleshoot why the battery died so quickly. They said the radio was "pulling" too much from the battery. (They supposably fixed it) But again a few days later the battery died again after sitting overnight. We brought it back to the dealership and they brought in a GMC "expert" to replace the entire DVD/CD/Navigation system. They also replaced our battery with a much larger battery, similar to the ones that GMC puts in there diesel trucks. They had our Denali for 5 days, but it appears to be fixed now.
Getting it fixed correctly wasn't without headaches, but it was all covered under warranty, including the battery. And they are updating the nav w/ the new edition disc as well for no charge.

Posted on Apr 24, 2009

Mr BrokRench
  • 1623 Answers

SOURCE: 1999 Cadillac Catera - 103,000 miles - cranks but no fire

Hello carol...from the symptons you describe more than likely it's the CPS (crankshaft position sensor.)
The CPS is a common problem on Cateras with these symptoms.
The sensor is a magnetic impulse type that sends a signal to the computer, the computer then triggers the fire signal. When the CPS gets weak, dirty or has low voltage the intermitten no starts occur. It will finally result in a no start at all...Please be aware that a lot of caddy dealers will and have overcharged customers for this common problem by ill advise and replaceing uneeded componets.
Good luck...i hope this helps and will fixya up.

Posted on May 22, 2009

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