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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 Solenoid Valve and Transmission Control Module Assembly 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.
    NOTE: Use care when handling the control valve body assembly. If dropped, damage to the control solenoid valve body assembly internal components, including the transmission control module (TCM), may result.
    NOTE: Discard the channel plate. Replace with a NEW channel plate. Reusing an old channel plate may cause damage to the control solenoid valve assembly.
    IMPORTANT: Use care when installing the channel plate assembly. However, if a retaining tab is broken or missing, DO NOT replace the control solenoid valve assembly. The channel plate assembly can still be adequately aligned.
    Fig 1: Control Valve Channel Plate Spacer Plate Gasket & Transmission Wiring Harness Assembly
    GM2063163Courtesy of GENERAL MOTORS CORP.
  1. Install the control valve channel plate spacer plate gasket (1).
  2. Install the transmission wiring harness assembly (2).
    3. Fig 2: Control Solenoid Valve And TCM Assembly, Control Valve Body Bolts & Harness Retainer
    GM2063161Courtesy of GENERAL MOTORS CORP.
  3. Install the control solenoid valve and TCM assembly (4).
    4. IMPORTANT: Do not tighten the bolts at this time.
  4. Install by hand the control valve body bolts (3) to the control solenoid valve and TCM assembly.
  5. Install the wire harness retainer (2).
    6. IMPORTANT: Do not tighten the bolts at this time.
  6. Install by hand the control solenoid valve heat sink bolts (1) to the control solenoid valve and TCM assembly.
    7. Fig 3: Bolt Tightening Sequencing
    GM2063162Courtesy 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 bolts following the specified sequence.

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

    Tighten:  Tighten the control solenoid valve heat sink bolts to 7 N.m (62 lb in).

    8. Fig 4: Control Solenoid Valve Body, Wiring Harness Connector & Retainer
    GM2063158Courtesy of GENERAL MOTORS CORP.
  8. Connect the transmission wiring harness to the control solenoid valve body (3).
  9. Install the transmission wiring harness connector (1) to the wire harness retainer.
  10. Install the transmission wiring harness to the wire harness retainer (2).
  11. Install the transmission electrical connector passage sleeve. Refer to Automatic Transmission Electrical Connector Passage Sleeve Replacement .
  12. Install the transmission fluid filter and auxiliary fluid pump filter. Refer to Automatic Transmission Fluid Filter and Auxiliary Fluid Pump Filter Replacement .
  13. Install the catalytic converter. Refer to Catalytic Converter Replacement (1500 ) or Catalytic Converter Replacement (LFA) .
  14. Lower the vehicle.
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