GMC Sierra Catalytic Converter

Browse GMC Sierra Catalytic Converter questions and answers. Choose a question that matches your symptoms.

6 discussions

Sulfur Smell

2015 GMC SIERRA

For About Two Months I Have Had A Pretty Strong Sulfur/rotten Egg Smell In My Truck. The Smell Comes And Goes But Seems To Get Stronger When...

13 ANSWERS

Asked by justinblanton

2008 GMC SIERRA

Engine Mechanical Problem 2008 Gmc Sierra V8 Four Wheel Drive Automatic There Is Water Coming Out Of The Catylitic Converter And The...

1 ANSWER

Asked by barrera705

2005 GMC SIERRA

I Have An '05 Gmc 2500hd With A Lly Duramax. My Question Is Related To A Catalytic Converter. Under The Truck, In Front Of The Muffler...

1 ANSWER

Asked by chackmak

2003 GMC SIERRA

My Check Engine Light Came On Showing Catalytic Converter Bad Bank One. I Replaced The Whole Y-pipe Including Both Catalytic Converters. I...

3 ANSWERS

Asked by jasonall

1996 GMC SIERRA

Truck Rides Rough And Sputters When I Get On The Gas. After The Truck Gets Hot, I Can Feel It Clear Up And Drive Better. Even The Exhaust...

5 ANSWERS

Asked by Bigjohn01

1989 GMC SIERRA

My Truck Starts Right Up When The Engine Is Cold, And Idles Fine. After Driving Long Enough For The Temperature Gauge To Reach Normal...

1 ANSWER

Asked by tkende

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