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Veronica Lopez Posted on Dec 23, 2014
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My 2008 GMC sierra starts all of a sudden going crazy turning off and on akl The power. Once i park and shut off itwill not start. It is completely dead!! give it time (cools down) it starts. Or if u give it a boost. Have changed battery, starter, alternator. Need help

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jack layton

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  • Cars & Trucks Master 5,569 Answers
  • Posted on Dec 23, 2014
jack layton
Cars & Trucks Master
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Joined: Nov 12, 2014
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You needed to do some testing before you replaced anything. I give guys and gals the same info, I don't know any other way. You could use a digital multimeter for testing full charge at the battery, you could also check charging system. If there is a wiring circuit problem with any of the parts you replaced, replacing the part won't fix it.

If your saying the starter motor won't crank, check the starter wiring. Any testing at the starter make sure tranny is in park or neutral and the parking brake is set. Usually at the starter, there are two voltage terminals, one is battery voltage, hot all the time. The other circuit goes hot with the key in the crank position. I can't rule out your ignition switch at the moment?

Some makes and models, if battery voltage is lost, it can effect your security system?

5 Related Answers

Curt Downs

  • 1779 Answers
  • Posted on Nov 18, 2008

SOURCE: 2000 Ford Focus ZX3 won't start

Hi Kimberly, 1st u need to check the battery to see if it needs a charge. Did u try to jump start the car, or try to charge the battery? If u can get it to run, bring it to a parts store, most offer free check of the charging system. It's possible that the alternator is overcharging the battery, which will result in battery failure, or undercharging, resulting in a battery needing a charge.
Check the battery terminals (where the cables attach). Make sure there is no corrosion. Remove cables and clean up connections w/ fine sandpaper (u can buy a special tool for this, maybe $6 or so). To prevent future corrosion, coat battery cables/terminals with grease, or vaseline will work. If the charging system checks out ok, next thing to check would be the starter. Let me know what u find after checking my list, if u still have a problem, we can continue from there. Good luck, let me know whats going on.

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Anonymous

  • 6982 Answers
  • Posted on May 05, 2009

SOURCE: my parking brake is sticking

Either the switch on the lever is not adjusted or is going bad, or the return spring is weak. You could try spraying the cables where they enter the outer coverings with wd 40 or other spray lube and making sure that the cables are not hanging up as well. (good to do once in a while anyhow as maintenance)

weavalo

  • 5 Answers
  • Posted on May 11, 2009

SOURCE: 98 saturn sl1 won't start

If the problem occurs after the car has been driven long enough to reach normal operating temperature, the problem is the starter. If the 'no crank' occurs cold, retest the battery.

Anonymous

  • 2 Answers
  • Posted on Jul 22, 2009

SOURCE: 98 saturn sl1 won't start

I have a 98 Saturn SL1 from time to time it would not start, it wouldn't even try. I knew the battery was good. It turned out to be the cranshaft position sensor.

johnjohn2

Johnny Brown

  • 5763 Answers
  • Posted on Oct 10, 2009

SOURCE: my 2001 gmc sierra wont start. i pulled it in the

try tapping on starter while someone truns key, sounds like bad starter if wires are clean and tight. good luck.

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