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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 10L80 (MHS MHU MQC) - Repair Instructions - On Vehicle (1 Of 2) >> Repair Instructions - On Vehicle >> Transmission Control Module Replacement >> Installation Procedure

Installation Procedure

  1. GM5990006Courtesy of GENERAL MOTORS COMPANY

    Transmission Control Module (1) @Engine Control Module Bracket (2) - Install

  2. Engine Control Module Bracket (2) - Move into position
  3. GM5990002Courtesy of GENERAL MOTORS COMPANY

    Connect the electrical connector. (2)

  4. Engine Wiring Harness Retainer (1) - Engage [2x]
  5. GM5990003Courtesy of GENERAL MOTORS COMPANY

    Engine Control Module Bracket (2) - Install

  6. CAUTION:

    Refer to Fastener Caution .

  7. Engine Control Module Bracket Bolt (1) - Install and tighten [3x] - Fastener Specifications
  8. GM5990001Courtesy of GENERAL MOTORS COMPANY

    Engine Control Module (2) - Install

  9. Engine Control Module Bolt (1) - Install and tighten [4x] - Fastener Specifications
  10. GM5990002Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @Engine Control Module Bolt - Engage

  11. GM5989997Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness (4) - Install

  12. Engine Wiring Harness Channel Retainer (3) - Install [2x]
  13. Engine Wiring Harness Retainer (2) - Engage [2x]
  14. Connect the electrical connectors. (1)
  15. GM5513751Courtesy of GENERAL MOTORS COMPANY

    Reposition the front wheelhouse liner forward.

  16. Front Wheelhouse Liner Bolt (1) - Install and tighten [3x] - Fastener Specifications
  17. GM5513749Courtesy of GENERAL MOTORS COMPANY

    Front Wheelhouse Liner Retainer (2) - Install

  18. NOTE:

    Quantity of fasteners may vary based on option content.

  19. Front Wheelhouse Liner Bolt (1) - Install and tighten [3x] - Fastener Specifications
  20. GM5513747Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Quantity of fasteners may vary based on option content.

    Front Wheelhouse Liner Bolt (1) - Install and tighten [3x] - Fastener Specifications

  21. GM5522093Courtesy of GENERAL MOTORS COMPANY

    {If equipped} Front Tire Front Air Deflector Bolt (1) - Install and tighten - Fastener Specifications

  22. Install the front tire and wheel assembly. Tire and Wheel Removal and Installation (Steel Wheel) , or Tire and Wheel Removal and Installation (Aluminum Wheel)
  23. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (9C1/5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  24. Program the transmission control module. Control Module References