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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 (2 Of 2) >> Repair Instructions - On Vehicle >> Automatic Transmission Removal and Installation (L84/L87 & F48 & NP0) >> Installation Procedure

Installation Procedure

  1. Support the transmission with a suitable transmission jack.
  2. GM5608370Courtesy of GENERAL MOTORS COMPANY

    Raise the transmission (1) into place.

  3. GM5608009Courtesy of GENERAL MOTORS COMPANY

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

  4. GM5608354Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The torque converter must rotate freely by hand.

    Slide the transmission (3) straight onto the locating pins while lining up the marks on the flywheel and the torque converter.

  5. CAUTION:

    Refer to Fastener Caution .

  6. Transmission Stud (1) Install and tighten - Fastener Specifications
  7. NOTE:

    Position the transmission cooler pipe bracket as necessary.

  8. Transmission Bolt (2) Install and tighten [2x] - Fastener Specifications
  9. GM5608334Courtesy of GENERAL MOTORS COMPANY

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

  10. GM5021402Courtesy of GENERAL MOTORS COMPANY

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

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

    Install the transmission vent hose clip bracket (2).

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

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

  16. GM5607888Courtesy of GENERAL MOTORS COMPANY

    Transfer Case Vent Hose (2) - Install

  17. Install the transfer case vent hose retainer (1).
  18. GM5600725Courtesy of GENERAL MOTORS COMPANY

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

  19. GM5652731Courtesy of GENERAL MOTORS COMPANY

    Connect the transmission wiring harness connector (1).

  20. Install the wiring retainer as necessary..
  21. Raise the transmission into place.
  22. 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.
  23. NOTE:

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

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

    Transmission Converter Cover- Right Side (2) - Install

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

    Starter (1) - Install

  28. GM5569840Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (3) - Connect

  29. Protective Sleeve (4) - Install
  30. Starter Solenoid Cable (1) - Install
  31. Starter Solenoid Cable Nut (2) - Install and tighten - Fastener Specifications
  32. GM5569758Courtesy of GENERAL MOTORS COMPANY

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

  33. GM5569769Courtesy of GENERAL MOTORS COMPANY

    Starter Solenoid Cable (2) - Install

  34. Battery Negative Cable Ground Bolt (1) - Install and tighten - Fastener Specifications
  35. GM5569721Courtesy of GENERAL MOTORS COMPANY

    Starter Heat Shield (2) - Install

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

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

  38. 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
  39. 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
  40. GM5585541Courtesy of GENERAL MOTORS COMPANY

    Transmission Converter Cover- Left Side (2) - Install

  41. Transmission Converter Cover Bolt (1) - Install and tighten - Fastener Specifications
  42. Transfer Case Assembly - Install - Transfer Case Assembly Replacement (L84/L87 - F47) - NQH , or Transfer Case Assembly Replacement (LM2 - F47) - NQH , or Transfer Case Assembly Replacement (L84/L87 & F47) - NQH , or Transfer Case Assembly Replacement (LM2 & F47) - NQH , or Transfer Case Assembly Replacement (L84/L87 - F47) - NPO , or Transfer Case Assembly Replacement (LM2 - F47) - NPO , or Transfer Case Assembly Replacement (L84/L87 & F47) - NPO , or Transfer Case Assembly Replacement (LM2 & F47) - NPO
  43. GM5608309Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Seal (3) - Install NEW

  44. Remove the caps from the fittings and plugs from the holes before installing the transmission fluid cooler pipes.
  45. Transmission Fluid Cooler Inlet and Outlet Pipe (2) @Automatic Transmission - Install
  46. Transmission Fluid Cooler Pipe Connector Bolt (1) - Install and tighten - Fastener Specifications
  47. Lower the vehicle.
  48. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection (9C1/5W4) , or Battery Negative Cable Disconnection and Connection (KL9)
  49. Fill and inspect the transmission fluid level.
    1. Adhesives, Fluids, Lubricants, and Sealers
    2. Approximate Fluid Capacities
  50. Inspect for Leaks