Where is the throttle position sensor on a 1998 Chevy dually K3500 454?

The throttle position sensor (TPS) on a 1998 Chevy dually K3500 454 is located on the throttle body. The throttle body is mounted to the intake manifold, and the TPS is mounted to the throttle body on the driver's side. It is usually held in place by two screws. The TPS is a small, black sensor with a three-wire connector.

The TPS works by sending a signal to the engine control module (ECM) that indicates the position of the throttle valve. This information is used by the ECM to control the amount of fuel that is injected into the engine.

If the TPS is faulty, it can cause a number of problems, including:

* Engine stalling

* Idle problems

* Poor fuel economy

* Decreased performance

If you are experiencing any of these problems, it is important to have the TPS checked. A faulty TPS can be easily replaced, and it is a relatively inexpensive repair.