Tools You'll Need:
* Socket Wrench: A 10mm or 13mm socket (check your owner's manual to be sure; the size varies slightly across years and trim levels). A ratchet will make this much easier.
* Wrench (Optional): Some models might require a wrench for the battery hold-down clamp. This is usually a 10mm, but again, check your manual.
* Safety Glasses: Protect your eyes from acid splashes.
* Gloves (Recommended): Protect your hands from battery acid.
* New Battery: Make sure you get a battery with the correct group size (check your owner's manual or the old battery).
Steps:
1. Safety First: Disconnect the negative (-) terminal first. This prevents short circuits. Use your wrench or socket to loosen the nut holding the cable. Pull the cable off the terminal.
2. Disconnect the Positive Terminal: Next, disconnect the positive (+) terminal in the same way.
3. Remove the Hold-Down Clamp: Most Grand Ams have a clamp securing the battery. Locate it (it might be a simple metal bar or a more complex plastic clamp) and use the appropriate wrench or socket to loosen and remove it.
4. Lift Out the Battery: The battery should now be free to lift out of its tray. Be careful, as it's likely somewhat heavy and filled with acid.
5. Install the New Battery: Place the new battery into the tray, ensuring it sits correctly.
6. Attach the Hold-Down Clamp: Secure the new battery with the hold-down clamp.
7. Reconnect the Terminals: Connect the positive (+) terminal first, then the negative (-) terminal. Make sure the connections are tight.
8. Double-Check: Double-check all connections to ensure they are secure.
9. Start the Car: Start your car to ensure the new battery is working correctly.
Important Considerations:
* Acid: Battery acid is corrosive. Avoid getting it on your skin, clothes, or in your eyes. If you do get it on your skin, wash immediately with plenty of water.
* Spark Prevention: Be cautious to avoid accidental sparks while working around the battery. A simple spark can ignite the highly flammable hydrogen gas that batteries release.
* Battery Size: Verify the battery group size before purchasing a replacement. The wrong size will not fit correctly. This information is usually found on a sticker on the battery itself or in your owner's manual.
* Terminal Cleaner: Use a battery terminal cleaner to ensure good contact between the cables and terminals after you've cleaned them. This will help prevent corrosion and future problems.
If you are uncomfortable performing this task yourself, it's always best to have a qualified mechanic or auto parts store do the replacement for you. They can also dispose of your old battery properly.
