Question about 1999 GMC Sierra
I have a 1999 gmc Sierra that has no power. The truck starts and idles fine. When put in drive and then push the gas it falls on its face...When truck is in park you can slowly creep up on the throttle and get the rpms way up. If you mat the gas while it is in park and hold it to the floor the truck keeps the same idle and then slowly starts to lose rpms and a few seconds into it you can here it lightly backfire. Hope someone can help! Thanks!
Sounds like the fuel supply is inadequate. Check for a plugged fuel filter, or possibly the fuel pump is losing pressure. I had a 93 Chevy V6 that acted the same way, and after checking everything else I replaced the fuel pump, which solved the problem.
Posted on Jun 10, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 04, 2016 | 1997 GMC Sierra
May 11, 2010 | 2000 GMC New Sierra 1500
Mar 01, 2010 | 2001 GMC Sierra 1500HD
Nov 02, 2009 | 1993 GMC Sierra K1500
Oct 13, 2009 | 1993 GMC Sierra K1500
Jun 26, 2009 | 1999 GMC Sierra
Feb 21, 2009 | 1999 GMC Sierra
Dec 17, 2008 | 1999 GMC Sierra
437 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: