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Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Controls And Fuel - 5.3L, 6.0L & 6.2L - Repair Instructions) >> Repair Instructions >> Accelerator Pedal Position Sensor Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Accelerator Pedal Position Sensor Assembly
    GM1704147Courtesy of GENERAL MOTORS CORP.
  1. Position the accelerator pedal to the accelerator pedal bracket.
    2. CAUTION:

    Refer to Fastener Caution .

  2. Install the accelerator pedal bolts and tighten to 9 N.m (80 lb in).
    3. Fig 2: APP Sensor Electrical Connector
    GM1704152Courtesy of GENERAL MOTORS CORP.
  3. Connect the APP sensor electrical connector (1).
  4. Connect a scan tool to the diagnostic port in order to test for proper throttle-opening and throttle-closing range.
  5. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle (WOT).
  6. Verify that the vehicle meets the following conditions:
    • The vehicle is not in a reduced engine power mode.
    • The ignition is ON.
    • The engine is OFF.
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