2004 GMC Envoy Sometimes it doesn't start

Tiny
52CASTER
  • MEMBER
  • 2004 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 61,000 MILES
The problem is that when the key is turned on sometimes not everything is powering up like it should. Sometimes when the key is turned on, the tach and speedo along with other indicator lights go crazy, that's when it will not crank. But I can turn the key off and on 3-5 times and eventually get everthing powered up like it should, then it will start ok. I thought I had a bad battery, replaced it, same problem, now I'm thinking maybe a relay?Any one got Idea's?
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Saturday, April 12th, 2008 AT 2:19 AM

2 Replies

Tiny
BMRFIXIT
  • EXPERT
Do you have a security light on
and if so turn key on and leave it on for 10 to 15 min
charge battery and check charging system
have the BCM checked (data and codes )
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Saturday, April 12th, 2008 AT 5:47 AM
Tiny
BMRFIXIT
  • EXPERT
Checking the BCM will help for sure
I believe your issue is in the ignition switch
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Saturday, April 12th, 2008 AT 7:51 PM

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