Pontiac Firebird Trouble Codes

I Got A Check Engine Light On, Gm Code P1639 Five Volts Fer, Circuit 2. The Dealer Changed The Ac Pressure Sensor. The Light Came Back On...

Where Would I Check "5 Volt Ref Circuit 2 "? I Do Not Know What That Means.

I'll Get A Code P1369 Ever Once In A While Then It Goes Out 5 Volt Ref. 2 Circuit? What Is This?

What And Where Is Code Po102 -mass Air Flow Sensor Circuit Low Input ?

I Have A Formula Showing These Codes With No Codes For The Cause. I Cleaned The Faf Sensor And The Problem Went Away I Also Changed The...

My 02 Firebird Displays A P1125 Code. What Is It And How Do I Fix It. Are There Multiple Problems And/or Solutions Or Is It A Pretty...

When The "service Engine Light" Goes On A Put A Reading Coding Machine Into The Car's Computer And Generated The Following Two Codes: ...

I Have A P0102 Dtc Code On My 1999 Ls1 Engine Which Is Showing Symptoms I Have Not Been Able To Find In Any Other P0102 Thread Or...

Replaced Oxygen Sensor, Digital Egr New Ecm. New Injectors, New Pigtail Connectors On Distributor And Coil, New Tps. Drives Fine If Let Sit...

Trouble Code 45, And With The Tps. The Book Says The Tang Should Be Inline With Throttle Actuator. I Do Not Have Any Of That On The Tps...