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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Automatic Transmission - VT40 (MRG) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Control Valve Body Cover Replacement (LIH) >> Installation Procedure

Installation Procedure

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  1. GM4961815Courtesy of GENERAL MOTORS COMPANY

    Control Valve Body Cover Wiring Connector Hole Seal (3) - Install NEW

  2. Control Valve Body Cover Seal (2) - Install
  3. Control Valve Body Cover (1) - Install
  4. Fig 1: Identifying Control Valve Body Cover Bolts/Studs With Tightening Sequence
    GM4961814Courtesy of GENERAL MOTORS COMPANY

    Control Valve Body Cover Stud (1) - Install [8x] - Hand tighten

  5. Control Valve Body Cover Bolt (2) - Install [4x] - Hand tighten
  6. Control Valve Body Cover Stud (1) and Control Valve Body Cover Bolt (2) - Tighten in sequence [12x] 9 N.m (80 lb in)
  7. GM5373210Courtesy of GENERAL MOTORS COMPANY

    Transmission Wiring Harness Bracket (2, 3, 4) - Install [3x]

  8. Transmission Wiring Harness Bracket Nut (1) - Install and tighten [3x] 9 N.m (80 lb in)
  9. Install the battery positive cable to the front of the transmission.
  10. GM5373209Courtesy of GENERAL MOTORS COMPANY

    Connect the control valve body transmission control module electrical connector (1), then clip the 5 wiring harness retainers (2).

  11. Transmission Fluid Cooler Outlet Pipe @ Transmission - Install - Transmission Fluid Cooler Outlet Pipe Replacement (LIH)
  12. Transmission Fluid Cooler Inlet Pipe @ Transmission - Install - Transmission Fluid Cooler Inlet Pipe Replacement (LIH)
  13. GM5389464Courtesy of GENERAL MOTORS COMPANY

    Charge Air Cooler Inlet Air Hose (1) - Install - Charge Air Cooler Inlet Air Hose Replacement

  14. GM5369641Courtesy of GENERAL MOTORS COMPANY

    Air Cleaner Assembly (1) - Install - Air Cleaner Assembly Replacement

  15. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  16. Fill the transmission with transmission fluid. Transmission Fluid Drain and Fill (LIH) 
  17. Check for leaks.