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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 (Engine Control System - 4.8L, 5.3L, & 6.0L - Introduction) >> Repair Instructions >> Accelerator Pedal Position (APP) Sensor Replacement >> Installation Procedure
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Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Installing APP Sensor
    GM899728Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to the Fastener Notice in Cautions and Notices.
  1. Install the APP sensor.
  2. Install the 3 APP sensor bolts (1).

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

    3. Fig 2: Disconnecting/Connecting APP Sensor Electrical Connector
    GM899725Courtesy of GENERAL MOTORS CORP.
  3. Connect the APP sensor electrical connector.
  4. 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.
  5. Connect a scan tool in order to test for a proper throttle-opening and throttle-closing range.
  6. 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.
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