Where can you find a picture of the knock sensor in Pontiac Grand Prix?
If this is the 93 Grandprix with the 3.1 eng. the Knock sensor is located just under the manifold back next to the fire wall you can see it from the bottom. It’s hard to get to if you have small hands you can touch it from the bottom. However it is much easer to let the eng. cool down lean over the eng. close to the front of the eng. if you can get your hand and arm back there it is much easer to remove and replace from that point. I know I did one from the bottom it took 1.5 hours from the top it less than 15 minutes.
