PONTIAC P CODES (POWERTRAIN) P0400 - P0499

I Have A 1999 Pontiac Grand Prix. The Check Engine Light Is On And The Code Is P0449. I Replaced The Vent Valve Solenoid Located In The...

Well I Got My Car Inspected Last Month At The Beginning, Figuring I'd Not Put It Off. It Failed Miserably, Like 6 Obdii Codes. I Got...

Hey, Guys I Replaced The Trans. Bearings, Took Car For A Ride, The Engine Light Came On, I Pulled The Code P0420 Cat. Eff. Below Threshold...

Hi, I Have Been Battling This P0420 Code On My Car (gt Model) For A While Now And Was Hoping Someone Would Have Some More Insight On The...

Secondary Air Injection Valve What Is The Problem Most Likely?

Other Category Problem 2000 Pontiac Grand Prix 126000 Miles I Pulled Off The Access Cover Foor The Fuel Pump And There Are Two...

I Have Been Struggling With Getting This Car Inspected. Started Off With An Egr Code Which Has Been Repaired. Now It Is Showing Only The...

Replaced Evap. Vent Valve Solenoid And Ecm. And Gas Cap. Checked With A Evap Smoker. Still A Problem. Question Is, Is There A Can Bus...

The Car, After Sitting For A Few Hours Will Start And Idle For About Ten Minutes Before It The Rpms Start Going Wild, It Then Drops To...

Hello, I Have A P0420 And A P0410. I Know That The P0420 Is For The Catalytic Converter And The P0410 Is For The Air Pump Injection System...