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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 496 (Automatic Transmission - 2ML70 - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Wiring Harness Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Drive Motor Connectors & Control Wiring Harness
    GM2199293Courtesy of GENERAL MOTORS COMPANY
  1. Install the control wiring harness (2) and NEW O-ring seal (1).
    2. Fig 2: View Of Control Valve Upper Body & Bolts
    GM2199292Courtesy of GENERAL MOTORS COMPANY
  2. Install NEW hybrid low, 1-2 clutch regulator valve seals (8).
  3. Install a NEW A/T fluid pump seal assembly (7).
  4. Connect the 2 drive motor connectors to the control wiring harness.
  5. Install the control (w/body and TCM) valve assembly (6) and align the manual shift shaft position switch activator slide with the detent lever guide pin.
    6. Fig 3: Identifying Upper Control Valve Body & Bolts
    GM2199291Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  6. Install the 4 control valve upper body bolts (4) M6 x 1.0 x 65 and 2 control valve upper body bolts (5) M6 x 1.0 x 80.

    Tighten in the sequence shown to 11 N.m (97 lb in).

    7. Fig 4: Manual Shift Detent Spring Bolt, Manual Shift Detent Spring, Control Valve Upper Body Bolts, Control Valve Upper Body & Fluid Pump Seals
    GM2063165Courtesy of GENERAL MOTORS COMPANY
  7. Install the manual shift detent spring (5).
  8. Install the manual shift detent spring bolt (4) and tighten to 11 N.m (97 lb in).
    9. Fig 5: Control Solenoid Valve Body, Wiring Harness Connector & Retainer
    GM2063158Courtesy of GENERAL MOTORS COMPANY
  9. Connect the control wiring harness to the control solenoid valve body (3).
  10. Connect the output shaft speed sensor connector.
  11. Connect the manual shift shaft position switch.
  12. Install the control wiring harness connector (1) in the wire harness retainer.
  13. Install the control wiring harness to the wire harness retainer (2).
  14. Install the transmission electrical connector passage sleeve. Refer to Automatic Transmission Electrical Connector Passage Sleeve Replacement .
  15. Connect the transmission 16 Way connector.
  16. Connect the transmission 24 Way connector.
  17. Install the transmission fluid filter and auxiliary fluid pump filter. Refer to Automatic Transmission Fluid Filter and Auxiliary Fluid Pump Filter Replacement .
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