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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Automatic Transmission - ALLISON (Introduction, Service & Replacement)) >> Repair Instructions >> Manual Shift Shaft and Manual Shift Detent Lever Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the control valve assembly from the transmission. Refer to Control Valve Body Replacement .
  2. Remove the Park/Neutral Position (PNP) switch. Refer to Park/Neutral Position Switch Replacement .
  3. Loosen the nut (1) on the manual shift shaft (5) that retains the detent lever (4) to the manual shift shaft.
    Fig 1: Manual Shift Shaft and Manual Shift Detent Lever Assembly
    GM658999Courtesy of GENERAL MOTORS CORP.
    4. IMPORTANT: DO NOT mar the transmission case surface around the spring pin when removing the spring pin. An unmarred surface is required to maintain the seal between the control valve assembly and the transmission case.
  4. Place a protective plate on the transmission case surface around the spring pin (3). Place a drill bit inside spring pin (3) to prevent cutting or collapsing the pin when removing the pin. Remove the spring pin (3) from the transmission case.
  5. Slide the manual shift shaft (5) through the detent lever (4) and through the manual shift shaft seal.
  6. Rotate the detent lever to disengage the park pawl apply assembly (2). Remove the detent lever (4) and nut (1).
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