GM OBD1 codes 81, 82 and 83?

1995 CHEVROLET 1500
390,000 MILES • 5.7L • 2WD • AUTOMATIC
Avatar
4LASO4
  • MEMBER
  • 3 POSTS
What does codes 81, 82 and 83 mean?
Aug 30, 2023 at 8:09 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Here is a list of GM obd1 codes:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

81 - Brake input circuit fault
82 - Ignition control (IC) 3X signal error

There is no code 83? Can you please recheck it?
Aug 30, 2023 at 12:30 PM
Avatar
4LASO4
  • MEMBER
  • 3 POSTS
Rechecked still flashing code 83.
What is Ignition control (IC) 3X.
Aug 30, 2023 at 12:49 PM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
This can be the ignition module, coil or primary pickup coil problem, it just says problem with the ignition system.
Aug 31, 2023 at 10:29 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.