Check: http://www.geocities.com/MotorCity/6647/ta93/knock.htm > From: owner-gmecm@esl.eng.ohio-state.edu > [mailto:owner-gmecm@esl.eng.ohio-state.edu]On Behalf Of Bruce Plecan > Not in any gm I know of. > | i even read in car craft that the knock > | sensor can be switched out essentially > | with a 100 ohm resistor( for harder > | launches on race gas). > | byE > | Mike S.