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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1350 (Automatic Transmission - 2ML70 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Control Solenoid Valve and Transmission Control Module Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the transmission fluid filter and auxiliary fluid pump filter. Refer to Automatic Transmission Fluid Filter and Auxiliary Fluid Pump Filter Replacement .
  2. Remove the transmission electrical connector passage sleeve. Refer to Automatic Transmission Electrical Connector Passage Sleeve Replacement .
    3. Fig 1: View Of Control Solenoid Valve Body, Wiring Harness Connector & Retainer
    GM2063158Courtesy of GENERAL MOTORS CORP.
  3. Remove the transmission wiring harness from the wire harness retainer (2).
  4. Remove the transmission wiring harness connector (1) from the wire harness retainer.
  5. Disconnect the transmission wiring harness from the control solenoid valve body (3).
    6. Fig 2: View Of Control Solenoid Valve & TCM Assembly, Control Valve Body Bolts & Harness Retainer
    GM2063161Courtesy of GENERAL MOTORS CORP.
  6. Remove the control solenoid valve heat sink bolts (1) from the control solenoid valve and transmission control module (TCM) assembly.
  7. Remove the wire harness retainer (2).
  8. Remove the control valve body bolts (3) from the control solenoid valve and TCM assembly.
  9. Remove the control solenoid valve and TCM assembly (4).
    10. Fig 3: Identifying Control Valve Channel Plate Spacer Plate Gasket & Wiring Harness
    GM2063163Courtesy of GENERAL MOTORS CORP.
    CAUTION: 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.
    CAUTION: Discard the channel plate. Replace with a NEW channel plate. Reusing an old channel plate may cause damage to the control solenoid valve assembly.
    NOTE: Use care when removing 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.
  10. Remove the control valve channel plate spacer plate gasket (1).
  11. Remove the transmission wiring harness assembly (2).
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