Question about 2002 GMC Yukon Denali

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I put a brand new battery in my 2002 denali and it still dont start with out a jump

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If even with a new battery and you still can't get your car to start you have a high chance of having a bad alternator. If you dont have the meter to check the operation of the alternator, there are many auto parts stores that sell them or may even check it for you for free. As a mechanic that is the first place i would start looking for the issue. Good luck and have a great day!

Posted on Apr 01, 2011

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Posted on Jan 02, 2017

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Gave a jump start and now headlights don't work on a 2005 yukon denali


sound like battery has weak or battery terminals and post need cleaning. have battery charged and checked, if battery good. alternator not charging battery. if battery over 5 years old more likely battery is bad.if battery too weak head lights wont turn on battery dead this time of year if battery old. cold weather will finish it out.

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Check for loose wire at starter, try to turn motor with bypass at starter.

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WHEN TURNING KEY IT WONT START LIKE A DEAD BATTERY JUMP IT, BUT STILL WONT START.


if it doesnt even click over straight nothing at all ....
battery is no go at all
1.if it starts off a jump.....
altinater could be bad...take positive battery terminal off battery while car is on ...if it stays running its good if car dies altinaters bad.
2.if its good replace battery with brand new one....
3.if the cars battery is brand new and car acts like it wants to start real bad but wont...
if you have gas in the vehicle and it sounds like it dont ... your ecm is bad electronic control module or ICM ignition control module.....its the brain the spark


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1 Answer

Brand new battery won't jump start


A brand new battery should not need to be jumped. You may have other problems.

Oct 24, 2009 | 2002 Ford SVT Focus

1 Answer

I have a 2002 Yukon Denali. The other day I went


check for loose battery connection. or maybe a cable going bad. they can corrode inside and the copper wire will turn green

Mar 11, 2009 | 2002 GMC Yukon Denali

2 Answers

Keyless remote wont work, vehicle completely shut down


Hi Russell,

Absolutely no power? No dome light? No head lights? Nothing?
When you step on the brake pedal, no brake lights?

If true, start at the source and pop the hood.

This is going to be a bit of back and forth dialogue. I'll ask some questions and you get me the answers. That way we can get to the root of the problem. To save time, I'll ask multiple questions at a time. Here goes.

  • Check the battery. Is it still there? (Valid question with no evidence of power)
  • Are the terminal clamps tight?
  • Are the terminals clean and free of corrosion?
  • Are all the belts in place and tight? (pay special attention to alternator)
  • If you have a voltmeter. test the voltage at the battery terminals. It should be +12.5VDC.
Try getting a jump, when the cables are attached does anything light up?
Does it turn over and start?
Does it do anything?

Comment me back with your findings
Mike

Jan 05, 2009 | 2002 GMC Yukon Denali

1 Answer

2002 chevy silverado


clean ur battery terminals..take a wire brush and clean them..put it back together and make sure all terminals are tight...if that doesnt work..please let me know.

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