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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Automatic Transmission - 2ML70 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Control Valve Upper Body Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Fluid Pump Ball Check Valve, Upper Body Assembly, Gasket Assembly & Channel Plate
    GM2063173Courtesy of GENERAL MOTORS CORP.
  1. Install the fluid pump ball check valve (3) to the control valve upper body assembly (4).
    2. NOTE: Do not use the old spacer plate. Install a NEW spacer plate. Reusing an old spacer plate may cause internal transmission leaks and transmission damage.
  2. Install the control valve body spacer plate with gasket assembly (2).
  3. Install the control valve channel plate (1).
    4. Fig 2: Control Valve Channel Plate Bolts
    GM2063170Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not tighten the bolts at this time.
  4. Install by hand the control valve channel plate bolts (1).
    5. Fig 3: Shift Shaft Position Switch Bracket
    GM2063166Courtesy of GENERAL MOTORS CORP.
  5. Install the automatic transmission shift shaft position switch bracket (2).
    6. IMPORTANT: Do not tighten the bolts at this time.
  6. Install by hand the control valve body bolts (1).
    7. NOTE: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.
    Fig 4: Bolt Tightening Sequencing
    GM2063171Courtesy of GENERAL MOTORS CORP.
    NOTE: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.
    NOTE: Refer to Fastener Notice .
  7. Torque the control valve channel plate bolts following the specified sequence.

    Tighten:  Tighten the bolts to 11 N.m (97 lb in).

    8. NOTE: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.
    Fig 5: Bolt Tightening Sequencing
    GM2063168Courtesy of GENERAL MOTORS CORP.
    NOTE: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.
    NOTE: Refer to Fastener Notice .
  8. Torque the control valve body bolts following the specified sequence.

    Tighten:  Tighten the bolts to 11 N.m (97 lb in).

    9. Fig 6: Fluid Pump Seals, Seal Assembly, Body, Body Bolts & Shift Detent Spring
    GM2066382Courtesy of GENERAL MOTORS CORP.
  9. Install NEW fluid pump seals (6).
  10. Install a NEW control valve upper body seal assembly (1).
  11. Install the control valve upper body (2).
    12. NOTE: Bolt torque sequencing is critical to the proper function of the control solenoid valve assembly. Failure to follow the required sequencing may result in transmission malfunction.
    NOTE: Refer to Fastener Notice .
  12. Install the control valve upper body bolts (3).

    Tighten:  Tighten the bolts to 11 N.m (97 lb in).

  13. Install the manual shift detent spring (5).
  14. Install the manual shift detent spring bolt (4).
  15. Install the control solenoid valve and transmission control module assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Replacement .
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