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Home >> Cadillac >> 2021 >> CT4 V, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 283 (Automatic Transmission - 10L60 (MQ2), 10L80 (MHS) Or 10L90 (MHX) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Automatic Transmission Wiring Harness Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM4974610Courtesy of GENERAL MOTORS COMPANY

    Install the automatic transmission wiring harness (3). Control Valve Assembly and Transmission Wiring Harness Installation

  2. GM5208028Courtesy of GENERAL MOTORS COMPANY

    Install the control valve body (2) and the 7 NEW control valve body assembly bolts (1) in the transmission.

  3. Fig 1: Control Valve Assembly Bolts Tightening Sequence
    GM5088956Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Install the 7 bolts (1, 2, 3).

  4. Tighten in the sequence shown, refer to Control Valve Assembly and Transmission Wiring Harness Installation .
  5. Connect the transmission control wiring harness to the control valve body.
  6. GM5208014Courtesy of GENERAL MOTORS COMPANY

    Install the automatic transmission auxiliary fluid pump outlet pipe (2). Auxiliary Fluid Pump Installation

  7. GM4540404Courtesy of GENERAL MOTORS COMPANY

    Install the transmission fluid filter (6) and fluid pan assembly. Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement 

  8. Perform the solenoid valve characterization reprogramming procedure. Q77 Transmission Control Solenoid Valve Characterization Programming
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