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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 10L80 (MHS MQC) - Repair Instructions - On Vehicle (1 Of 2) >> Repair Instructions - On Vehicle >> Transmission Replacement (L84, L87, 2WD without F47) >> Installation Procedure

Installation Procedure

  1. Note the new transmission unique number (TUN).
  2. Support the transmission with a suitable transmission jack.
  3. GM5765228Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount (2) - Install

  4. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  5. CAUTION:

    Refer to Fastener Caution .

  6. Transmission Mount Bolt (1) - Install and tighten [2x] - Fastener Specifications
  7. GM5608009Courtesy of GENERAL MOTORS COMPANY

    Install the DT-21366  Converter Holding Strap (1) onto the transmission bell housing to retain the torque converter.

  8. GM5608370Courtesy of GENERAL MOTORS COMPANY

    Raise the transmission (1) into place.

  9. GM5608009Courtesy of GENERAL MOTORS COMPANY

    Remove the DT-21366  Converter Holding Strap (1).

  10. GM5608354Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The torque converter must rotate freely by hand.

    Slide the transmission (3) straight onto the locating pins.

  11. CAUTION:

    Refer to Fastener Caution .

  12. Transmission Stud (1) Install and tighten - Fastener Specifications
  13. Transmission Bolt (2) Install and tighten [2x] - Fastener Specifications
  14. GM5608334Courtesy of GENERAL MOTORS COMPANY

    Transmission Stud (1) Install and tighten [5x] - Fastener Specifications

  15. GM5021402Courtesy of GENERAL MOTORS COMPANY

    Install the fuel feed and evaporative emission and return hose (3).

  16. Fuel Feed and Return Front Hose Bracket Nut (1) - Install and tighten - Fastener Specifications
  17. Fuel Feed and Return Front Hose Bracket Bolt (2) - Install and tighten - Fastener Specifications
  18. GM5600854Courtesy of GENERAL MOTORS COMPANY

    Install the transmission vent hose clip bracket (2).

  19. Install and tighten the transmission vent hose clip bracket nut (1). Fastener Specifications
  20. GM5600801Courtesy of GENERAL MOTORS COMPANY

    Reposition the transmission vent hose (2) then install transmission vent hose retainer (1).

  21. GM5600725Courtesy of GENERAL MOTORS COMPANY

    Reposition the engine wiring harness (2) then install the engine wiring harness retainer (1).

  22. GM4960510Courtesy of GENERAL MOTORS COMPANY

    Transmission Heat Shield (3) - Install

  23. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  24. Transmission Heat Shield Bolt (2) - Install and tighten - Fastener Specifications
  25. Transmission Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
  26. Install the wiring harness.
  27. Uncap the fittings and unplug the holes of the transmission.
  28. GM5608316Courtesy of GENERAL MOTORS COMPANY

    Connect the wiring harness retainers. (2)

  29. Connect the electrical connector. (1)
  30. GM5608206Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  31. NOTE:

    Rotate the crankshaft balancer center bolt clockwise ONLY, to align the transmission torque converter bolt with the starter opening.

  32. Transmission Torque Converter Bolt (1) - Install and tighten [6x] - Fastener Specifications
  33. GM5585543Courtesy of GENERAL MOTORS COMPANY

    Transmission Converter Cover - Right Side (2) - Install

  34. Transmission Converter Cover Bolt (1) - Install and tighten - Fastener Specifications
  35. GM5569910Courtesy of GENERAL MOTORS COMPANY

    Starter (1) - Install

  36. GM5569840Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (3) - Connect

  37. Protective Sleeve (4) - Install
  38. Starter Solenoid Cable (1) - Install
  39. Starter Solenoid Cable Nut (2) - Install and tighten - Fastener Specifications
  40. GM5569758Courtesy of GENERAL MOTORS COMPANY

    Starter Bolt (1) - Install and tighten [2x] - Fastener Specifications

  41. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Starter Solenoid Cable (2) - Install

  42. Battery Negative Cable Ground Bolt (1) - Install and tighten - Fastener Specifications
  43. GM5569721Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Catalytic converter removed for graphic clarity.

    Starter Heat Shield (2) - Install

  44. Starter Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  45. GM5569719Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications

  46. GM5512332Courtesy of GENERAL MOTORS COMPANY

    {with RC1} Underbody Skid Shield (3) - Install

    1. Underbody Skid Shield Bolt (2) - Install and tighten [2x] - Fastener Specifications
    2. GM5512311Courtesy of GENERAL MOTORS COMPANY

      Underbody Splash Shield (1) - Install

    3. GM5512320Courtesy of GENERAL MOTORS COMPANY

      Underbody Splash Shield Bolt (1) - Install and tighten [4x] - Fastener Specifications

    4. Underbody Splash Shield Bolt (2) - Install and tighten [4x] - Fastener Specifications
  47. GM5513633Courtesy of GENERAL MOTORS COMPANY

    {with WTX} Underbody Skid Shield (2) - Install

    1. Underbody Skid Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
    2. GM5591893Courtesy of GENERAL MOTORS COMPANY

      Front Bumper Fascia Extension (4) - Install

    3. Front Bumper Fascia Extension Bolt (3) @ Underbody Skid Shield - Install and tighten [2x] - Fastener Specifications
    4. Front Bumper Fascia Extension Bolt (2) - Install and tighten [4x] - Fastener Specifications
    5. GM5540946Courtesy of GENERAL MOTORS COMPANY

      Front Bumper Fascia Extension (1) - Install

    6. GM5540945Courtesy of GENERAL MOTORS COMPANY

      Front Bumper Fascia Extension Bolt (2) - Install and tighten [8x] - Fastener Specifications

    7. Front Bumper Fascia Air Deflector Bolt (1) - Install and tighten [10x] - Fastener Specifications
  48. GM5585541Courtesy of GENERAL MOTORS COMPANY

    Transmission Converter Cover - Left Side (2) - Install

  49. Transmission Converter Cover Bolt (1) - Install and tighten - Fastener Specifications
  50. GM5544194Courtesy of GENERAL MOTORS COMPANY

    Propeller Shaft (1) - Install

  51. GM5544191Courtesy of GENERAL MOTORS COMPANY

    Align the reference marks made between the rear wheel drive shaft flange and the front and rear propeller shaft (2).

  52. If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:
    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  53. Install the 4 rear propeller shaft bolts (1) and tighten in a crisscross pattern. Fastener Specifications .
  54. GM5001113Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Seal - Right Side (1) - Install NEW

  55. GM5001105Courtesy of GENERAL MOTORS COMPANY

    Exhaust System Seal - Left Side (1) - Install NEW

  56. GM5001076Courtesy of GENERAL MOTORS COMPANY

    Three-Way Catalytic Converter (1) - Install

  57. GM4974120Courtesy of GENERAL MOTORS COMPANY

    Transmission Support Crossmember (1) - Install

  58. GM4974118Courtesy of GENERAL MOTORS COMPANY

    Transmission Support Crossmember Bolt (2) - Install [4x]

  59. Transmission Support Crossmember Nut (1) - Install and tighten [4x] - Fastener Specifications
  60. GM4974116Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount Nut (1) - Install and tighten - Fastener Specifications

  61. Remove the support from the transmission.
  62. GM5674935Courtesy of GENERAL MOTORS COMPANY

    Install the wiring harness as necessary and connect the 4 wiring harness retainers (3).

  63. GM5584486Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Nut - Right Side (1) - Install and tighten [3x] - Fastener Specifications

  64. GM5584496Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Nut - Left Side (1) - Install and tighten [3x] - Fastener Specifications

  65. GM5001054Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (2) @ Three-Way Catalytic Converter (3) - Connect

  66. Exhaust Pipe Clamp (1) - Tighten - Fastener Specifications
  67. GM5523023Courtesy of GENERAL MOTORS COMPANY

    Connect the heated oxygen sensor electrical connector. (1)

  68. GM5568855Courtesy of GENERAL MOTORS COMPANY

    Connect the heated oxygen sensor electrical connector. (1)

  69. GM5523087Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation. Adhesives, Fluids, Lubricants, and Sealers

    Using a suitable tool, install and tighten the heated oxygen sensor bank 1 sensor 2 (1). Fastener Specifications

  70. Connect the heated oxygen sensor electrical connector. (1)
  71. GM5525401Courtesy of GENERAL MOTORS COMPANY

    Using a suitable tool, install and tighten the heated oxygen sensor bank 1 sensor 1 (1). Fastener Specifications

  72. Connect the heated oxygen sensor electrical connector. (1)
  73. GM5508826Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Heat Shield (2) - Install

  74. Exhaust Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  75. GM5508824Courtesy of GENERAL MOTORS COMPANY

    Exhaust Front Pipe Heat Shield (2) - Install

  76. Exhaust Heat Shield Bolt (1) - Install and tighten - Fastener Specifications
  77. Front Wheelhouse Liner - Left Side and Right Side - Install [2x] - Front Wheelhouse Liner Replacement
  78. Uncap the fittings and unplug the holes of the transmission.
  79. GM5608309Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Seal (3) - Install NEW

  80. Transmission Fluid Cooler Inlet and Outlet Pipe (2) @ Automatic Transmission - Install
  81. Transmission Fluid Cooler Pipe Connector Bolt (1) - Install and tighten - Fastener Specifications
  82. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (9C1, 5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  83. Fill the transmission to the proper level with NEW transmission fluid. Transmission Fluid Fill Procedure
  84. Perform the solenoid valve characterization. Q77 Transmission Control Solenoid Valve Characterization Programming
  85. NOTE:

    The Service Fast Learn procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:

    The service fast learn procedure must be performed when any of the following repairs has been made to the transmission.

    • Pressure regulating solenoid replacement
    • Valve body repair or replacement
    • Any service/repair in response to a shift quality concern
    • Any internal transmission service, repair, overhaul, or replacement
    • Torque converter replacement
    • TCM replacement
    • Transmission assembly replacement
  86. Perform the service fast learn procedure. Transmission Service Fast Learn Procedure 
  87. Inspect for Leaks