Throttle Position Sensor (TPS) Adjustment: 3.8L

1. Install 3 jumper wires between TPS and harness connector. With ignition on, connect a digital voltmeter to "B" and "C" terminals of the TPS connector. See Fig 1 .
2. Adjust TPS in the closed throttle position to obtain specified output voltage. Tighten screws and recheck adjustment.

Fig 1: Throttle Position Sensor Terminal Identification

Courtesy of GENERAL MOTORS CORP.