GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Epica 🢒 Body 🢒 Data Link Communications 🢒 Intelligent Switching Unit Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1256639 Size: SH
  1. Disconnect the negative battery connector.
  2. Remove the instrument panel under cover.
  3. Remove the knee bolster. Refer to Knee Bolster Replacement in Interior Trim.

    4. Object Number: 1256921 Size: SH
  4. Disconnect the electrical connectors.
  5. Remove the nuts securing the intelligent switching unit (ISU).
  6. Remove the ISU.

Installation Procedure

    Object Number: 1256921 Size: SH
  1. Install the ISU with the nuts.
  2. Connect the electrical connectors.

    3. Object Number: 1256639 Size: SH
  3. Install the knee bolster. Refer to Knee Bolster Replacement in Interior Trim.
  4. Install the instrument panel under cover.
  5. Connect the negative battery connector.