1999 GMC C1500 codes

1999 GMC C1500
300,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
AULT
  • MEMBER
  • 1 POST
have rebuilt engine that is giving codes. im gettig misfires on 1 the 3 then another any ideas
Sep 18, 2010 at 11:50 AM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Random misfires-normally caused by vacuum leaks and bad fuel
Sep 19, 2010 at 12:20 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
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 new question

Frequently Asked Problems for This Vehicle