Knock Sensor?

Anyone know where to locate the knock sensor in a 99 GP?

I am getting a P0327 Knock Sensor code from the OBDII.

Vette, they are 2. One in the fron (Plug 1 3 5) and on in the back (2 4 5). If I am not mistaken look under or behind plug 5 area. You will see a round black cylinder bolted to the engine with a 2 cable connector. This is the knock sensor. Our GP's have 2 of them as I said, keep that in mind