Where is the throttle position sensor on a 2001 Chevy Tahoe with Vortec engine?

On a 2001 Chevy Tahoe with a Vortec engine, the Throttle Position Sensor (TPS) is located on the throttle body itself. The throttle body is situated on the intake manifold, usually near the air filter housing. The TPS is a small sensor that's mounted directly to the throttle body, typically with one or two screws. It's usually a rectangular or slightly oblong shaped sensor.

You'll likely need to remove the air intake tubing to get a clear view of the throttle body and the TPS. A picture of a 2001 Chevy Tahoe's throttle body with its TPS would be very helpful in visually identifying it; you can find such images through online searches. Always consult a repair manual specific to your vehicle's year and engine for precise location and service instructions.