Tools Required

WARNING: This page is about a different car, the 2004 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

J 42000 Battery Tester. See Special Tools and Equipment .

For best results, use an automatic taper-rate battery charger with a voltage capability of 16 volts.
The charging area should be well ventilated.
Do not charge a battery that appears to be frozen. Allow the battery to warm to room temperature and test it using the J 42000 before charging. See Special Tools and Equipment .