1997 GMC C1500 please help

1997 GMC C1500
193,000 MILES • 6 CYL • 2WD • MANUAL
Avatar
BATMAN13
  • MEMBER
  • 1 POST
i don't think my truck is getting enough fuel or air flow i've been told it could be sensors but i don't really know i have fault codes but i don't know what they mean they are p0171,p0174,p0300,p0420,p0507
Aug 26, 2008 at 2:49 PM
Advertisement
Avatar
BADBO
  • MEMBER
  • 35 POSTS
Po300 is a missfire code, 171 & 174 or 02 sensors codes, 420 is Catalyst System Low Efficiency (Bank 1),
507 is Idle Speed Too High. I would fix the 300 code first which is the plugs and wires. Hope this helps.

badbo
Aug 30, 2008 at 8:13 PM
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.