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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 3 (TRANSFER CASE - NVG 236/246-NP8 (TWO SPEED AUTOMATIC) - SERVICE, REPAIR AND DIAGNOSTICS)REPAIR INSTRUCTIONSTRANSFER CASE SHIFT CONTROL MODULE REPLACEMENTINSTALLATION PROCEDURE
2001 Chevrolet Suburban C1500

Installation Procedure

2001 Chevrolet Suburban C1500SECTION Installation Procedure
WARNING: This page is about a different variant/trim than selected.
  1. Move the electrical harness to the left side in order to make room to install the transfer case shift control module.
    2. Fig 1: Transfer Case Shift Control Module
    GM676699Courtesy of GENERAL MOTORS COMPANY
  2. Install the transfer case shift control module so that the electrical connector ports are to the right or pointing towards the instrument cluster.
  3. While installing the transfer case shift control module rotate clockwise until the module is in place and the electrical connector ports are facing outwards.
    4. Fig 2: Electrical Harness Retainer
    GM676224Courtesy of GENERAL MOTORS COMPANY
  4. Install the electrical harness retainer to the IP support beam.
  5. Connect the 2 electrical connectors to the transfer case shift control module.
    6. Fig 3: View Of Air Deflector Louver, Retainers & Switches
    GM676695Courtesy of GENERAL MOTORS COMPANY
  6. Install the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly the vehicle.
  7. Connect all the electrical connectors to the lamp switch, cargo lamp and 4WD shift buttons assembly.
  8. Install the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly in place.
  9. Install the IP trim bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
  10. Start the engine and test the automatic transfer case system for proper shift operation.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.