How can I charge or jump start the battery of a 2001 Buick Le Sabre without removing the back seat?

To jump-start the battery of a 2001 Buick Le Sabre without removing the back seat, locate the positive terminal under the hood, which is usually covered by a red plastic cap. Connect the red jumper cable to this terminal and the other end to the positive terminal of the assisting vehicle’s battery. Then, connect the black jumper cable to a grounded metal part of the Le Sabre (like a bolt) and the other end to the negative terminal of the assisting vehicle. Start the assisting vehicle, then try starting your Buick.