Where is the throttle position sensor grounded on a 1993 Pontiac grand am?

On a 1993 Pontiac Grand Am, the throttle position sensor (TPS) is typically grounded through the engine control module (ECM). The sensor's ground connection is facilitated via the wiring harness that connects it to the ECM. For specific wiring diagrams or locations, it's best to refer to the vehicle's service manual or a repair guide.