GMC SIERRA CATALYTIC CONVERTER

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Plugged Replace/Remove Rotten Egg

Sulfur Smell

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...

Asked by justinblanton ·

13 ANSWERS

2015

How to Test a Catalytic Converter?

VIDEO

How to Test a Catalytic Converter?

Instructional repair video

Catalytic Converter Symptoms

Catalytic Converter Symptoms

What are the symptoms of a bad or plugged catalytic converter? Common failures include: Low engine power, check engine light, failed smog test and more. A catalytic ...

1989 GMC Sierra Clogged Cat?

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

Asked by tkende ·

1 ANSWER

1989

Exhaust With No Muffler Or Catalytic Converter Rides...

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...

Asked by Bigjohn01 ·

5 ANSWERS

1996

2003 GMC Sierra Catalytic Converter Problem

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

Asked by jasonall ·

3 ANSWERS

2003

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