GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 6.5L 🢒 Battery Replacement

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative cable from the negative battery terminal.
  2. Disconnect the positive cable from the positive battery terminal.

    3. Object Number: 188851 Size: SH
  3. For single battery vehicles, remove the battery hold-down retainer.
  4. Remove the battery.

    5. Object Number: 188854 Size: SH
  5. For dual battery vehicles, remove the battery hold-down retainers.
  6. Remove the batteries.
  7. Inspect the battery for damage.
  8. Inspect the battery cables and the connections.
  9. Inspect the carrier for damage or foreign objects.

    10. If damage is found, correct the cause.

Installation Procedure

    Object Number: 188851 Size: SH
  1. For single battery vehicles, install the battery into the carrier.
  2. Install the battery hold-down retainer or the top bar.

    3. Object Number: 188854 Size: SH
  3. For dual battery vehicles, install the batteries into the carriers.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the battery hold-down retainers or the top bars.

    5. Tighten

        • Tighten the retainer bolt to 18 N·m (13 lb ft).
        • Tighten the top bar nut to 10 N·m (89 lb in).
  5. Connect the positive cable to the positive battery terminal.
  6. Connect the negative cable to the negative battery terminal.

    7. Tighten

        • Tighten the side terminal bolts to 12 N·m (106 lb in).
        • Tighten the top terminal nuts to 18 N·m (13 lb ft).