Pontiac Grand Am:  Bad ECM → Symptoms + Diagnosis

Your Pontiac Grand Am’s ECM (Engine Control Module) is its brain.  Just like a human’s brain, your Grand Am can’t function without it. It is sometimes referred to as the ECU or PCM.  It’s all the same thing. The ECM controls and directs your entire drivetrain (unless there is a serrate transmission controller). When an … Read more

Pontiac Grand Am P0353 Diagnosis

P0353 is a generic OBD2 code that indicates that ignition coil “C” has an issue with the primary or secondary wiring circuits.  It has the same meaning for the Pontiac Grand Am as it would any other vehicle.  It is typically caused by a bad coil pack or wiring harness issue, although there can be … Read more