Security system problem

1999 GMC SUBURBAN
250,000 MILES
Avatar
JAEGER57
  • MEMBER
  • 2 POSTS
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?
Jan 18, 2019 at 10:49 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Hello,

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

Please let me know.
Jan 19, 2019 at 11:41 AM
Avatar
JAEGER57
  • MEMBER
  • 2 POSTS
Stays on; doesn't flash.
Jan 19, 2019 at 11:52 AM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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.
Jan 21, 2019 at 9:51 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.