GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Accelerator Pedal Position Sensor Replacement

Removal Procedure

    Object Number: 740950 Size: SH
  1. Disconnect the APP sensor harness connector.

    2. Object Number: 740951 Size: SH
  2. Remove the accelerator pedal mounting nuts.
  3. Remove the APP assembly.

Installation Procedure

    Object Number: 740951 Size: SH
  1. Install the APP assembly to the cowl.

    2. 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.

  2. Install the accelerator pedal mounting nuts.

    3. Tighten
    Tighten the accelerator pedal mounting nuts to 20 N·m (15 lb ft).


    Object Number: 740950 Size: SH
  3. Connect the APP sensor harness connector.
  4. Verify that the vehicle meets the following conditions:
    5. • The vehicle is not in a Reduced Engine Power mode.
    • The ignition is ON.
    • The engine is OFF.
  5. Operate the accelerator pedal and observe the APP angles with a scan tool. The accelerator pedal should operate freely, without binding, between closed throttle and wide open throttle (WOT).
  6. Inspect the carpet fit under the accelerator pedal.
  7. Install the left IP lower closeout insulator panel.