GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Engine 🢒 Engine Electrical 🢒 Battery Isolator Replacement

Removal Procedure

    Object Number: 871658 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the cable to isolator nut caps.
  3. Remove the cable retaining nuts.

    4. Object Number: 871657 Size: SH
  4. Remove the isolator retaining nuts.
  5. Remove the isolator.

Installation Procedure

    Object Number: 871657 Size: SH
  1. Install the battery isolator to the step.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the battery isolator nuts.

    3. Tighten
    Tighten the battery isolator nuts to 9 N·m (79 lb in).


    Object Number: 871658 Size: SH
  3. Connect the cable to the isolator.

    4. Tighten
    Tighten the isolator cable nuts to 9 N·m (79 lb in).

  4. Install the caps to the isolator cable.
  5. Connect the negative battery cable . Refer to Battery Negative Cable Disconnection and Connection .