Questions & Answers for: backfiring 1999 gmc sierra

1999 Gmc Sierra has no power 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 ...

hard start when air temp is cold, backfires when warm The engine is a 5.3 liter. Truck wont start or has a hard time starting when the air temp is below 32. Sometimes the truck starts and stumbles at ...

...1999 gmc Sierra is running as if it were running out of gas and the problem is that it sputters and drives in low rpm and the muffler gets hot and backfires! I tried everything I could think of. I ...

...gmc c1500 2wd 6cy after it spits and sputters and sometimes backfire what causes it you may have a bad egr valve.thats usually causes this. you can spend a fortune replacing sensors,i can offer an ...

99 gmc engine starts idles rough then boggs and dies when you give it gas driving home one day the truck started acting funnny then the power died. replaced the battery now the truck will start but ...