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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 588 (AUTOMATIC TRANSAXLE - 4T65-E (INTRODUCTION, SERVICE & REPLACEMENT))REPAIR INSTRUCTIONSAUTOMATIC TRANSMISSION RANGE SELECTOR CABLE ADJUSTMENT
1999 GMC Forward Control 5.7 R, Automatic

Automatic Transmission Range Selector Cable Adjustment

1999 GMC Forward Control 5.7 R, AutomaticSECTION Automatic Transmission Range Selector Cable Adjustment
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Adjust the automatic transaxle range selector cable while the transaxle and while the gear selector are in the Neutral position only. Failure to do so may cause mis-adjustment.
  1. Set the parking brake.
  2. Block the wheels.
    3. Fig 1: Loosening Automatic Transaxle Range Selector Cable Terminal
    GM161142Courtesy of GENERAL MOTORS CORP.
  3. Use an appropriate tool to pry on the automatic transaxle range selector cable terminal at the automatic transaxle range selector lever pin to remove the automatic transaxle range selector cable terminal from the transaxle manual shaft lever pin. DO NOT pry and DO NOT pull up on any other part of the automatic transaxle range selector cable or damage may occur.
  4. Fully lift the adjuster lock button. Ensure the adjuster is free to move.
  5. Rotate the automatic transaxle range selector lever fully counterclockwise to the Park gear, then rotate the lever clockwise 2 clicks into the Neutral gear to place the automatic transaxle range selector lever in the Neutral gear.
  6. Perform the following steps to place the inside car gear shifter in the Neutral position:
    1. Rotate the shift lever to the Low 1 position, fully down.
    2. Push forward on the lever while slowly pushing up. The gear shift lever moves up while clicking over the gear over travel stops.
    3. Release the gear shift lever once the gear shift lever stops solidly. The gear shift lever is in the Neutral gear.
  7. Grasp the automatic transaxle range selector cable terminal in the underhood.
  8. Pull the automatic transaxle range selector cable terminal toward the pin on the automatic transaxle range selector lever. The automatic transaxle range selector cable adjuster spring should compress as the terminal is moved toward the pin.
  9. Carefully push down the pin until the pin snaps to attach the pin to the automatic transaxle range selector lever. Do NOT move the automatic transaxle range selector lever out of position. DO NOT pull the terminal beyond the pin then push back or the shifter may move out of the Neutral gear.
    10. Fig 2: Automatic Transaxle Range Selector Cable Terminal
    GM161143Courtesy of GENERAL MOTORS CORP.
  10. Press the adjuster lock button down flush with the adjuster body.
  11. Shift to Park.
  12. Release the parking brake while applying the service brake.
  13. Start the engine.
  14. Ensure all the indicated gear positions match the vehicle response.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.