What is the Throttle Position Sensor (TPS) and how does it work for Chevrolet Colorado and GMC Canyon?

The TPS is a potentiometer linked to the end of the throttle shaft in the throttle body. The PCM uses this TPS output voltage to determine fuel delivery versus throttle valve angle. The Throttle Actuator Control system (TAC) works with the TPS and APP sensors. They actually are two sensors located in one housing. Diagnostic Trouble Codes (DTCs) are set when there is a disparity between the actual throttle position and that which is sensed by the TPS unit. It is necessary to replace a whole throttle body when its TPS acts up.

Genuine GMC Canyon Throttle Position Sensor

TPS Switch

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GMC Canyon Sensor Kit,Throttle Position
Part Number: 19259452
$103.39 MSRP: $185.46
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Product Specifications
- Other Name: SENSOR KIT, Multi Port Fuel Injection Throttle Position; Actuator, Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2012 GMC Canyon | PICKUP, PICKUP CREW CAB, PICKUP EXTENDED CAB, PICKUP EXTENDED LENGTH | 8 Cyl 5.3L

GMC Canyon Throttle Position Sensor Parts Questions & Experts Answers

Sensor Kit,Throttle Position
19259452
Q: What is the Throttle Position Sensor (TPS) and how does it work for Chevrolet Colorado and GMC Canyon?
A: The TPS is a potentiometer linked to the end of the throttle shaft in the throttle body. The PCM uses this TPS output voltage to determine fuel delivery versus throttle valve angle. The Throttle Actuator Control system (TAC) works with the TPS and APP sensors. They actually are two sensors located in one housing. Diagnostic Trouble Codes (DTCs) are set when there is a disparity between the actual throttle position and that which is sensed by the TPS unit. It is necessary to replace a whole throttle body when its TPS acts up.