GM Service Manual Online
For 1990-2009 cars only

Caution: Batteries produce explosive gases. Batteries contain corrosive acid. Batteries supply levels of electrical current high enough to cause burns. Therefore, in order to reduce the risk of personal injury while working near a battery, observe the following guidelines:

   • Always shield your eyes.
   • Avoid leaning over the battery whenever possible.
   • Do not expose the battery to open flames or sparks.
   • Do not allow battery acid to contact the eyes or the skin.
      - Flush any contacted areas with water immediately and thoroughly.
      - Get medical help.

Notice: Do not push or tow the vehicle to start it. Under some conditions this may damage the catalytic converter or other parts of the vehicle. Also, since this vehicle has a 12-volt negative ground electrical system, make sure the vehicle or equipment used to jump start the engine has a 12-volt negative ground electrical system. Use of any other type system may damage the vehicle's electrical components.

Do not jump start a vehicle under the following conditions:

    • You do not know the voltage or ground of the other vehicle.
    • The voltage or ground of the other vehicle are different than the voltage or ground of your vehicle.

Follow the procedure outlined below when using jumper cables. Treat the booster battery and the discharged battery carefully when using jumper cables. Do not cause sparks.

  1. Position the vehicle equipped with the charged battery so that the jumper cables will reach the discharged battery.
  2. DO NOT allow the vehicles to touch.

  3. Turn OFF the following components:
  4. • The engine control switch
    • The lights
    • Any other unnecessary electrical loads
  5. Apply the parking brake.
  6. Place the transmission in the NEUTRAL position.
  7. Block the wheels.
  8. Do not use the jumper cables if the insulation is loose or missing.
  9. Inspect the built-in battery hydrometer of the vehicle equipped with the dead battery. If the hydrometer is clear or light yellow, do not jump start the battery. Replace the battery.

  10. Object Number: 204723  Size: SH
  11. Attach one jumper cable end to the positive terminal (2) of the booster battery.
  12. Attach the other end of the same cable to the positive terminal (3) of the discharged battery.
  13. Attach one negative jumper cable end to the negative terminal (1) of the booster battery.
  14. Connect the jumper negative cable end to a solid ground (4) (such as an A/C compressor bracket), at least 450 mm (18 in) from the battery of the vehicle being started.
  15. Start the engine of the vehicle that provides the jump start.
  16. Start the engine of the vehicle with the discharged battery.
  17. Perform the following steps in order to remove the jumper cables:
  18. 14.1. Remove the negative cable from the metal ground (4).
    14.2. Remove the negative cable from the booster battery (1).
    14.3. Remove the positive cable from the booster battery (2).
    14.4. Remove the positive cable from the jumped battery (3).