noise when accelerating

1995 GMC SUBURBAN
236,500 MILES • V8 • 4WD • AUTOMATIC
Avatar
DON329
  • MEMBER
  • 1 POST
I just purchased a 1995 GMC Suburban with a 5.7 engine and today I noticed a loud buzzing sound as I accelerated from a dead stop. The sound goes away after 5-8 seconds. It is coming from under the drivers seat. Is this an issue with the tranny or rear diff? Sorry...there are about 150,000 miles or 236,500 kilometers...yes, I am in Canada.
Dec 27, 2010 at 7:05 PM
Advertisement
Avatar
SEM
  • MEMBER
  • 1 POST
I had the same problem. I found that the fuel lines were touching the floor board and you were hearing the fuel pump pulse. Chech the lines that run from the frame to the back of the TBI. Mostly check right at the floor board and tranny hump on driver side. Hope that helps!!!
Sep 13, 2011 at 7:19 AM
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