If you've been following our C4 project from the outset, you know that the past few years have seen the car make depressingly little progress toward its goal of achieving quarter-mile parity with its ...

Time for the Shoehorn: It’s been a long time coming, but the 396ci LT1 is bolted into the B-body, wired for EFI, and strapped to the dyno I thought this day would never come. The joys of doing ...

The P2135 code indicates that the engine control module (ECM) has detected a mismatch between the voltage signals of Throttle Position Sensor (TPS) A and TPS B (image below). These dual sensors work ...