CHEVROLET P CODES (POWERTRAIN) P0400 - P0499

My 1999 Silverado Is Showing Codes 0402 And P0402. My Manual Says It's The Catalyst Not Performing At Optimum Efficience Left Bank. I Can't...

I Had My Emission Done On My Car And It Failed Due To Code P0440.I Need To Know What To Look Forward To Fixing And Were Its Located. I...

My 1998 Chevy Lumina Got Multiple Error Code ( P0305, P0135, And P0442) After Repair A Horn From A Dealer. After Repair I Only Have Run...

I Recently Changed Two Clogged Injectors And It Got Rid Of My Multiple Misfire (p0300). I Also Changed The Catalytic Converter And The P0420...

I Recently Turned My Truck On This Morning And The Engine Light Poped Up I Went And Checked For Codes At Auto Zone And The P0455 Code Popped...

I Have Received The P0455 Error Code And It Isn't The Gas Cap. What Else Can It Be And How Can I Diagnose The Problem?

Hi Guys New To The Site Want To Give You A Try, It's A Goody. My Wife Has A 2001 Chevy Camaro, 3.8l, 102,000 Miles. We Keep Getting The Code...

Service Engine Light On. Code P0401 Low Egr Flow. I Tried A Different Valve From The Junk Yard (i Cleaned The Origional And The Junk Yard...

I Have A '98 Lumina With A 3.1 V6. For The Last 6 Months The Check Engine Light Has Been On. When Scanned Gives Code P0401 - Egr-...

Vin #1gcds19e08813130633 Getting Trouble Code #'s Po449/449 Pending/455 Pending. The Dtc Giving Me Freeze Frame Info Is Po449 (evap....