Chevrolet Impala P Codes (Powertrain) P0400 - P0499 P0420

Browse Chevrolet Impala P Codes (Powertrain) P0400 - P0499 P0420 questions and answers. Choose a question that matches your symptoms.

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2003 Chevrolet Impala PO420

2003 CHEVROLET IMPALA

I Have A 2003 Chevy Impala With A 3.8 V^.. Back A Couple Of Months Ago My Check Engine Light Came On And There Was A Code Of Po420 So I Went...

1 ANSWER

Asked by faw484

2003 CHEVROLET IMPALA

2003 Chevy Impala 6 Cyl Automatic 90,000 Miles I Would Appreciate Any Help Or Advice. The Check Engine Light Just Came On In My Impala...

1 ANSWER

Asked by icblue88

2002 CHEVROLET IMPALA

Just Had The Catalytic Converter Replaced Yesterday, And After 30 Or So Miles The Check Engine Light Came Back On, My Obd Reader Gave Me The...

3 ANSWERS

Asked by basetech

2002 CHEVROLET IMPALA

I Have A 2002 With A P0420 Cat Code. The Factory Cat Was Replaced A Couple Of Years Ago After Becoming Clogged, And Had No Issues To Almost...

10 ANSWERS

Asked by Craig3777

2002 CHEVROLET IMPALA

Computer Problem 2002 Chevy Impala 6 Cyl Wheel Drive Type Unknown Automatic 97809 Miles What Can I Do To Fix This? Catalyst...

1 ANSWER

Asked by daniuskarojas

2001 CHEVROLET IMPALA

My Car Listed Above Ls Model, Is Throwing Code P0420, Haven't Noticed Anything Acting Different. I'm Just Curious As To How I Could...

1 ANSWER

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Asked by Heyman0718

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