Charging Procedure

CHARGING PROCEDURE

TOOLS REQUIRED
GM P/N 12303040

NOTE: 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 it has just been discharged, such as in cranking.




2. When charging side-terminal batteries while 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.
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. Make sure all 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 halt hour after starting the battery charger.
8. Tap the hydrometer lightly to dislodge any air bubbles. The bubbles may cause a false indication.
9. After charging, load test the battery. Refer to Battery Load Test. Testing and Inspection

BATTERY CHARGING






^ Use a charger, with an end voltage of 16 V, equipped with a voltmeter that is accurate to within 1 percent.
^ The ambient temperature should be 15 - 38° C (60 - 100° F). A battery that is extremely cold will not accept measurable current for several hours after starting the charger.
^ The charging area should be well ventilated.
^ Do not charge the battery when the built in hydrometer is clear or yellow (C). Replace the battery it there is a cranking problem.
^ Do not charge a battery that appears to be frozen, replace it.
^ Batteries showing a green dot in the hydrometer (A) do not need to be charged unless they have just been discharged (such as cranking the engine).