Security system problem

Tiny
JAEGER57
  • MEMBER
  • 1999 GMC SUBURBAN
  • 250,000 MILES
I drive this truck everyday to and from work. Today I went out to crank it and it started then stopped immediately.

Told that's a security system problem.

However, my truck uses a regular key, not a VATS key.

How can I 'fix' this?
Friday, January 18th, 2019 AT 10:49 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,961 POSTS
Hello,

Can you tell me if the security light is flashing when you try to crank the engine over?

Please let me know.
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Saturday, January 19th, 2019 AT 11:41 AM
Tiny
JAEGER57
  • MEMBER
  • 2 POSTS
Stays on; doesn't flash.
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Saturday, January 19th, 2019 AT 11:52 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,961 POSTS
Hmm, not flashing doesn't sounds like the serytuit is enabled to tell us for sure lets run the codes. here is a guide to help us get started:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Monday, January 21st, 2019 AT 9:51 AM

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