Accelerator Pedal Position Sensor Replacement for GMC Truck TopKick C-Series (Conventional) C4/C5 2003

1. Disconnect the accelerator pedal position sensor electrical connector.
2. Remove the accelerator pedal assembly with bracket .
3. Remove the accelerator pedal assembly mounting nuts from the cowl .

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Important: Always use a torque wrench in order to obtain the proper torque.

1. Install the accelerator pedal assembly with bracket to the cowl.

Tighten
Tighten the accelerator pedal bracket mounting nuts to 36 N·m (27 lb ft).

2. Connect the accelerator pedal position sensor electrical connector.
3. Inspect for complete throttle opening and closing positions. Use a scan tool to monitor the throttle angles while operating the accelerator pedal to open and close the throttle. The accelerator pedal should operate freely without binding between full closed throttle and wide open throttle.
4. Inspect for proper carpet fit under the accelerator pedal.