Circuit/System Description
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The accelerator pedal position (APP) sensor is mounted on the accelerator pedal control assembly. Two APP sensors, APP sensors 1 and 2 are used to monitor the accelerator pedal position. Each sensor has the following circuits:
- A 5-volt reference circuit
- A low reference circuit
- A signal circuit
The engine control module (ECM) uses the APP sensors input to determine the amount of acceleration or deceleration that is desired.