Question about 2002 GMC Yukon Denali

1 Answer

My alarm refuse to cut off

I started my truck last night to warm it up, and headed back in the house, 3 minute later I heard my alarm goin off. So I went back out to find my truck still running with alarm goin off with lights flashing/blinking. I try to deactivate it with the remote but nothing happened, so I shut down the car to use the key in the ignition & door, still nothing will stop the alarm from going off. I try to start the truck again but, now it wont even start. I had to disconnect the battery in order to keep the alarm from going off and kiilin the battery power... Can somebody help me off with this problem???

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  • 2 Answers

When starting my truck it sometimes make a humming sound.

Posted on Feb 12, 2014

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Mike258
  • 1498 Answers

SOURCE: 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

Posted on Jan 05, 2009

  • 491 Answers

SOURCE: Won't start after battery died and recharged

Sounds like low voltage.
Get a boost from another car with a good set of cables.
Once started check voltage with booster car disconnected.
Is it around 14 volts?
If so,the truck is charging, so it may be time for a new battery.

If the voltage is at 12 or lower while running the truck is not charging.
May be time for a new alternator.

The battery should have charged enough in 1 hour to start the truck.
You may need a battery and alternator.

Posted on Sep 07, 2009

coljames925t
  • 64 Answers

SOURCE: My head lights were flashing

do you have a remote starter also? If so then that is the culprit. If this is an after market alarm then time for a new one. if not then take it to the dealer to reset.

Posted on Nov 17, 2010

  • 1949 Answers

SOURCE: This morning tried to start my 03 sierra 1500, i

test and replace battery

Posted on Mar 10, 2011

  • 1 Answer

SOURCE: 1998 Gmc Yukon wont start due to Anti Theft alarm system how do I get Yukon to start again

Maybe by disconnectting your battery and reconnectting, you might be able to reset system.

Posted on Mar 04, 2012

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