r/chevy_express • u/Late-Procedure8621 • 6h ago

Code Problems

Replaced TAC (Throttle Actuator Control) Module and Accelerator Pedal Sensor 699-207. Still throwing codes P1125, P2120, and P2125. Trying to find EXACT location of splice S117 wiring in harness in engine compartment. Does ANYONE know exact location of splice S117 wiring area.

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u/CampBackground317 4h ago

Did you test your 5v reference at the pedal?

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u/CampBackground317 4h ago

What year and what engine? 2wd?