When you turn the key of your Buick, the battery provides power to the starter, which then starts the engine. If you have a good battery and the vehicle is still hard to start, it may indicate a problem with the Buick alternator. Within this device are three separate circuits that generate electrical power. When one of these circuits fail, the total power produced by the Buick alternator will be greatly reduced. When this happens, the battery will be used to a greater degree by the accessories in the vehicle, which will lower the current available for starting. Eventually the remaining circuits will stop functioning, and at this time, it will be necessary to replace the Buick alternator. On our website, the intuitive user interface makes it easy to find the perfect replacement for your vehicle. Our Buick alternator is manufactured to meet the original specifications and comes with a full warranty from the manufacturer. Before installing the new unit, disconnect the negative wire from the vehicle to avoid electrical damage. Find the location of the old Buick alternator, and determine how to remove the belt that drives it, usually by loosening an adjustment bolt on the part itself, or by relieving the pressure of the tensioning pulley on a serpentine system. While installing the new Buick alternator, be sure to tighten all bolts properly, then put the belt back on and reconnect the battery. Our online catalog has a wide range of other parts and accessories for your vehicle, as well, all at great prices. With our easy ordering and quick order processing, you will not have to wait long for your new Buick alternator to arrive.