CHEVROLET P CODES (POWERTRAIN) P0400 - P0499

I Drove It Fine The Next Day I Heard Noise Then The Engine Light Came On Code Number P0401?

Code P0420 Came On. This Car Has Been A Pain In The. You Know What I'm Thinking About? Dumping It But I Put So Much Money Into I Already...

We Have Replaced The Fuel Cap And Have Changed One Purge Value And After A Couple Of Days The Check Engine Light Came Back On. So, We Put...

We Replaced The Rocker Arms And Lifters Changed Oil And Filter It Still Has Knock In The Top End But Drives Fine. The Codes That Come Up Are...

It Started Out With A Bad Gas Cap. Went To Auto Zone And They Sold Me The Wrong Cap That Wasnt Pressurized. I Drove For 3 Weeks Like That....

Got P0430 And P0420 Codes Show Up For Inefficient Cat. Replaced Post Cat O2 Sensors With No Luck; Check Engine Light Came Back. Took To A...

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

I Am Looking Into Buying A Used Car For My Daughter, But The Man Who Is Selling It Is Saying This Is The Code That Is Stopping The Car From...