The Buick knock sensor is a tiny component that plays a rather large role in the safe and efficient operation of your engine. The Buick knock sensor assists in monitoring the vibration of the engine in order to detect any signs of detonation in the combustion chamber, rather than the clean burn of fuel that is desirable for efficient engine performance. If the Buick knock sensor detects detonation, or engine knock, in the combustion chamber, it sends a voltage signal to the vehicle computer, which will adjust the engine timing to stop the detonation. The Buick knock sensor is mounted on the engine block, cylinder head or the intake manifold depending upon the vehicle model. The purpose of the monitoring function that the Buick knock sensor provides, is to allow the engine to run very close to the point of detonation, which yields the best engine efficiency and performance, while not quite reaching it to cause damage to the engine. If the Buick knock sensor begins to malfunction, and no longer transmits its signal to the vehicle computer when the point of detonation is reached, the computer will not adjust the timing and the engine knock will be allowed to continue. If the Buick knock sensor is not replaced in a timely fashion, poor engine performance and fuel efficiency can result, as well as the potential for expensive damage to vital engine parts. We carry a selection of quality replacements for the Buick knock sensor in our online catalog, all at great low prices. Our secure site will make it safe and easy to order your Buick knock sensor or our toll-free phone line is available for your convenience.