How to Replace the Battery in a GMC Sierra
- 1). Find the battery behind the driver's side headlight. It has a solid cover, which must first be removed before replacing the battery. It just pops off.
- 2). Disconnect the cable ends from the battery terminals with a battery terminal puller.
- 3). Lift the battery out of the compartment. The battery weighs nearly 50 lbs., so make sure you have help nearby if you cannot lift it out by yourself.
- 4). Use a wire brush to clean the surface that holds the battery. Wipe it down with a damp cloth and let it dry.
- 5). Clean the insides of the connector cables with a pointed wire brush. Keep your gloves on at all times to avoid getting acid on your hands.
- 6). Place the new battery on the shelf. Place the correct cable on each terminal and tighten securely with pliers or a socket wrench. Replace the battery cover.