GMC Sierra Trouble Codes

Browse GMC Sierra Trouble Codes questions and answers. Choose a question that matches your symptoms.

57 discussions

Misfire Codes P0300, P0305

1997 GMC SIERRA

The Truck Had No Real Problems Up Until My Wife Stopped To Put Gas In The Truck. She Didn't Fill It Up All The Way, And Had Driven About...

1 ANSWER

Asked by Cperez71

1996 GMC SIERRA

The Truck Starts Fine And Runs Well. If I Drive It 20 Plus Miles And Let It Cool Of Just A Little (time To Shop At Lowes 20 Min) It Starts...

2 ANSWERS

Asked by dabaker

1996 GMC SIERRA

My Truck Is Throwing An Engine Code Relating To A Misfire Every Now And Then. The Mechanic Is Saying That The Popits On The Injectors Are...

1 ANSWER

Asked by Krandar

1995 GMC SIERRA

I Was Leaving Work Just Started Hitting The Incline Going Up The Mountain An Truck Just Began Missing Horribly Shaking, Bogs When Giving It...

3 ANSWERS

Asked by Jwin9569

1994 GMC SIERRA

What Is Theit Common Problem For Code 43 On A 94 Gmc Sierra Half Ton 4wd 350?

14 ANSWERS

Asked by kristinvanvalkenburg

1992 GMC SIERRA

Working On A 92 Gmc And It Is Running Rough I Have The Cts Reporting Abnormally Low, How To Troubleshoot. Getting Code 15 Diagrams Would...

2 ANSWERS

2 IMAGES

Asked by j.stieg

1989 GMC SIERRA

Obd1 Location.

1 ANSWER

1 IMAGE

Asked by PCBRIAN

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