GM Service Manual Online
For 1990-2009 cars only

The battery will not last indefinitely. With proper care, the battery will provide many years of service.

  1. When the battery tests well, but fails to perform satisfactorily, check for the following conditions:
  2. • A vehicle accessory is left on overnight.
    • Long periods of slow driving, or short trips that do not allow sufficient time to recharge the battery.
    • The electrical load on the vehicle is greater than the generator output. This can happen when aftermarket equipment is added.
  3. Check the charging system for the following conditions:
  4. • Poor ground connections
    • Electrical shorts
    • A slipping accessory drive belt
    • A faulty generator
  5. Check for the following that results from a poorly maintained battery:
  6. • Corrosion on the battery terminals
    • Loose battery cable clamps
    • Operating the vehicle with a loose battery hold down
  7. Check the exterior for damage to the battery case.