CHEVROLET P CODES (POWERTRAIN) P0500 - P0599

Check Engine Light Came On. Had It Tested At Local Auto Parts Store. Came Up Po507 What Is This And How Do I Correct It?

I Have Changed Air Idle Valve, Cleaned Thottle Valve& Maf With Air Intake Cleaner. Engine Idle Is Still Slow Coming Back After Being Revved...

My Car Is Reading These Codes.

I Get A Po521 And Oil Pressure Guage Says Stuck On 80 Psi When Started Up. My Automatic Start Also Just Stops Working Too. As Of Now The...

When I Start The Truck, It Idles Rough And May Shut Down. When I Get It Started It Is Fine, But I Get A P0507 Code, And It Idles High...

Immobilizer Key Incorrect Code Had Popped Up. But The Truck Will Still Start And Run. And Thoughts On How To Fix This Issue. I Have Cleared...