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Throttle Position Sensor Removal

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Rubber Band Around Throttle Body And TP Sensor Cover
    GM4247159Courtesy of GENERAL MOTORS COMPANY
  1. Remove any loose debris and dirt from the throttle body assembly and the throttle position sensor cover. Inspect the throttle body for damage.
    2. CAUTION:

    Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

  2. Clean the throttle body bore and the throttle plate using a clean shop towel with GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N 993026), or an equivalent product.
    3. NOTE:

    DO NOT mount the throttle body in a vise. The throttle body can be set on the top of a soft protected workbench area.

  3. Hold the throttle body with your hand, so that the throttle position (TP) sensor cover is facing upward as shown.
  4. Secure a rubber band (1) around the throttle body and TP sensor cover as shown.
    5. Fig 2: TP Sensor Cover Clips
    GM4247162Courtesy of GENERAL MOTORS COMPANY
  5. Turn over the throttle body and use a flathead screwdriver to remove the two clips (1) as shown. Discard the clips.
    6. Fig 3: TP Sensor Cover Clips
    GM4247164Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT pry on the machined sealing surface of the throttle body inlet duct.

  6. Turn over the throttle body and use a flathead screwdriver to remove the four remaining clips (1) from the TP sensor cover. Discard the clips.
    7. Fig 4: TP Sensor Cover And Intermediate Gear
    GM4247165Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT allow the intermediate gear to fall out.

  7. Hold the throttle body with your hand, so that the TP sensor cover is facing upward. Grasp the TP sensor cover (1) and carefully lift it up and separate it from the throttle body.
  8. Maintain the throttle body in an upward position. Use your thumb to maintain contact with the intermediate gear (2).

    If the intermediate gear falls out and impacts a hard workbench surface or the floor, abort this procedure and REPLACE with anew throttle body assembly.

    9. Fig 5: Verifying TP Sensor Cover Gasket Is Secure
    GM4247167Courtesy of GENERAL MOTORS COMPANY
  9. Verify that the TP sensor cover gasket HAS REMAINED in the TP sensor cover as shown. Ensure that the gasket is accounted for and remains with the old TP sensor cover.
    10. Fig 6: Female Throttle Actuator Motor Terminals
    GM4247169Courtesy of GENERAL MOTORS COMPANY
  10. Observe the TP sensor cover for missing female throttle actuator motor terminals (1). Verify that the female throttle actuator motor terminals HAVE REMAINED in the TP sensor cover and HAVE NOT been retained on the throttle actuator motor male terminals. Discard the old TP sensor cover, gasket and terminals.
    11. Fig 7: TP Sensor Cover Female Throttle Actuator Motor Terminals On Throttle Actuator Motor Male Terminals
    GM4247171Courtesy of GENERAL MOTORS COMPANY
  11. If one or both of the TP sensor cover female throttle actuator motor terminals HAVE BEEN retained on the throttle actuator motor male terminals (1), remove and discard those female terminals.
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