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2000 GMC Jimmy not starting all the time

Tiny
THEWOOLIF
  • MEMBER
  • 2000 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 15,500 MILES
Sometimes my jimmy will fire but not start. Leave it sit for 15 minutes, try it again, and it starts.

I've been told it may be the security system thinks it's the wrong key, so it won't allow the car to start until the security system resets itself, (15-20 min.).

do you think this could be the problem, and what can I do about it?
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Tuesday, October 5th, 2010 AT 8:45 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
Is the security light on or flashing when you try to start it?
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Tuesday, October 5th, 2010 AT 9:01 AM
Tiny
THEWOOLIF
  • MEMBER
  • 4 POSTS
The security light comes on every time you start or try to start the car
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Monday, October 11th, 2010 AT 12:57 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
The light is supposed to come on and go right back off so I'm assuming it remains flashing after trying to start it. If this is a the case, then there is an intermittent failure in the system. The most common problem is the ignition lock and the sensor inside it but you would need a Tech2 scan tool to diagnose it properly.
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Monday, October 11th, 2010 AT 1:02 PM

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