Question about 2002 GMC Sierra
I turn the key the engines starts perfectly.
drive around, stop. turn the key...nothing... only the radio works.
stick my head under the hood, jiggle a few wires, it starts again.
Weird.. this happens off and on all day long.
the strange thing is when the truck won't start, the lights don't work or any of the power group just the radio and fan.
Come back 1/2 hour later everything is fine.
this truck is really bothering me.
all the battery posts are tight and fine.
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Posted on Jan 02, 2017
SOURCE: 02 GMC Sierra 4.3 V6 P1345
Well that sounds like a tough one , But here is a site worth checking out . Several mechanics use this it to help out people like your self that are frustrated and are getting P #$%$# off ! Good luck
Posted on Mar 09, 2009
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
SOURCE: Lack of power when accelerating
You really should have a code check done. There are numerous items that can give you similar symptoms. Two places to look are the fuel filter (usually overlooked till they gum up, and the throttle position sensor (but test it first with an ohmeter. You will need a manual (vehicle specific ones are available at most larger parts stores and most of those stores also do code testing free)
Posted on May 27, 2009
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