How can we fix this sparking knocking problem

2003 GMC SONOMA
65,000 MILES
Avatar
STJUNGMAN
  • MEMBER
  • 1 POST
our truck seems to be spark knocking. When in drive it won't move. The motor seems to just bounce all over. We did a full tune up. The service engine light is not on. It only does it in drive with a load on it.
Jun 26, 2012 at 7:20 PM
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
check for blocked exhaust from bad cat converter

roy
Jun 26, 2012 at 7:22 PM
🔧 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