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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 561 (AUTOMATIC TRANSAXLE - 4T65-E (INTRODUCTION, SERVICE & REPLACEMENT))REPAIR INSTRUCTIONSCONTROL VALVE BODY REPLACEMENTREMOVAL PROCEDURE
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F

Removal Procedure

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Removal Procedure
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.
  1. Remove the case side cover. Refer to Case Side Cover Replacement .
  2. Remove the oil pump. Refer to Oil Pump Replacement .
    3. Fig 1: Identifying Valve Body Bolts
    GM164796Courtesy of GENERAL MOTORS CORP.
  3. Remove the valve body bolts (374-381, 384).
    4. Fig 2: View Of Spacer Plate
    GM48225Courtesy of GENERAL MOTORS CORP.
  4. Remove the valve body (300) while keeping the spacer plate (370) with the transaxle.
    5. Fig 3: Locating Ball Check Valves In Valve Body
    GM49399Courtesy of GENERAL MOTORS CORP.
  5. Remove the ball check valves (372, 373) from the valve body.
    6. Fig 4: Locating Spacer Plate & Gasket
    GM49396Courtesy of GENERAL MOTORS CORP.
  6. Remove the spacer plate (370) and gasket.
    7. Fig 5: Locating Ball Check Valves In Case Cover
    GM48229Courtesy of GENERAL MOTORS CORP.
  7. Remove the ball check valves (372) from the case cover.
    8. Fig 6: Inspecting Valves For Excessive Peening
    GM12988Courtesy of GENERAL MOTORS CORP.
  8. Inspect each check valve seat in the spacer plate (370) for excessive peening. Place a ball check valve (372) on each seat and use a flashlight in order to look for visible light between the valve and the seat.
  9. Inspect all components removed from the transaxle. Refer to the Transmission/Transaxle/Transfer Case Unit Repair Manual.
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.