GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Impala 🢒 Steering 🢒 Steering Wheel and Column 🢒 Steering Column Wiring Harness Assembly Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.


    Object Number: 603937 Size: SH

    Important: Check the main wiring harness assembly for burned 2 amp fuses before doing this procedure.

  1. Disable the SIR coil. Refer to SIR Disabling and Enabling .
  2. Remove the steering wheel from the column. Refer to Steering Wheel Replacement .
  3. Remove the steering column from the vehicle. Refer to Steering Column Replacement .
  4. Inspect the steering column for accident damage. Refer to Steering Column Accident Damage Inspection .
  5. Remove the upper and lower trim cover. Refer to Steering Column Trim Covers Replacement .
  6. Disconnect all connectors attached to the wire harness assembly.
  7. Remove the bulkhead connector.

Installation Procedure

    Caution: Refer to SIR Inflator Module Coil Caution in the Preface section.


    Object Number: 603937 Size: SH
  1. Slide the bulkhead connector into the steering column.
  2. Connect all of the connectors to the wire harness assembly.
  3. Install the upper and lower trim cover. Refer to Steering Column Trim Covers Replacement .
  4. Install the steering column into the vehicle. Refer to Steering Column Replacement .
  5. Install the steering wheel onto the steering column. Refer to Steering Wheel Replacement .
  6. Enable the SIR system. Refer to SIR Disabling and Enabling .