What is the Throttle Position Sensor (TPS) and how does it work on Chevrolet Trailblazer?

The TPS is a variable potentiometer that is mounted on the end of the throttle shaft in the throttle body. Based on the TPS output voltage, fuel delivery can be decided by the PCM in relation to the throttle valve angle. The Throttle Actuator Control system (TAC) and Accelerator Pedal Position (APP) sensor are what the TPS works with. There are two sensors in one housing which make up the latter. Codes are set when there is a difference between actual position of throttle and position as sensed by TPS. The Throttle Position Sensor must be replaced as part of the throttle body unit.

Genuine Chevrolet Trailblazer Throttle Position Sensor

TPS Switch

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Chevrolet Trailblazer Sensor Kit,Throttle Position
Part Number: 19259452
$100.94 MSRP: $190.46
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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 Chevrolet Trailblazer | 4 DOOR | 8 Cyl 5.3L, 8 Cyl 6.0L

Chevrolet Trailblazer 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 on Chevrolet Trailblazer?
A: The TPS is a variable potentiometer that is mounted on the end of the throttle shaft in the throttle body. Based on the TPS output voltage, fuel delivery can be decided by the PCM in relation to the throttle valve angle. The Throttle Actuator Control system (TAC) and Accelerator Pedal Position (APP) sensor are what the TPS works with. There are two sensors in one housing which make up the latter. Codes are set when there is a difference between actual position of throttle and position as sensed by TPS. The Throttle Position Sensor must be replaced as part of the throttle body unit.