Charging Procedure

TOOLS REQUIRED
GM P/N 12303040

NOTICE: Turn OFF the ignition when connecting or disconnecting the battery cables, the battery charger or the jumper cables. Failure to do so may damage the PCM or other electronic components.

1. Do not charge a battery with a green hydrometer dot unless the battery has just been discharged, such as by cranking.
2. When charging side-terminal batteries on-vehicle, use the following procedure:
2.1. Turn off the charger.
2.2. Connect the charger positive lead to the positive cable terminal located in the engine compartment on the right side.
2.3. Connect the negative charger lead to a solid engine ground, such as the generator mounting bracket.

NOTICE: Refer to Fastener Notice in Cautions and Notices.

3. When charging side-terminal batteries out of vehicle, install battery side terminal adapters.

Tighten
Tighten the battery side terminal adapters to 15 N.m (11 lb ft).

4. Ensure that all of the battery terminals are clean and tight.
5. Best results occur when charging a battery that is at room temperature. A battery that is extremely cold may not accept current for several hours.
6. Charge the battery until the hydrometer has a green dot.
7. Inspect the battery every 30 minutes after starting the battery charger.
8. Tap the hydrometer lightly in order to dislodge any air bubbles. The bubbles may cause a false indication.
9. After charging the battery, load test the battery.