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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Automatic Transmission - 8L90 (M5U) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Automatic Transmission Wiring Harness Replacement (Electrical Connector Passage Sleeve) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Position the automatic transmission wiring harness into the transmission.
    2. Fig 1: Retaining Tabs And Main Connector (Electrical Connector Passage)
    GM3802175Courtesy of GENERAL MOTORS COMPANY
  2. Press the main connector into the transmission case until the four retaining tabs (1) around the main connector, lock into place.
    3. Fig 2: Electrical Connector
    GM3802143Courtesy of GENERAL MOTORS COMPANY
  3. Connect the electrical connector (1).
  4. Install the control valve body. Refer to Control Valve Body Replacement .
  5. Connect the chassis wiring harness from the transmission electrical connector.
  6. Reprogram the transmission. Refer to Solenoid Valve Characterization Reprogramming
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