[98Z]

Sorry to grag up an old thread, but I'm having the same problems with my '93 4.3 Vortec as Hank was having. I'm hoping that Hank got his problems all figured out.

At any rate, I know nothing about the locations of the knock sensors so I thought I'd see if someone on here could tell me where I might find them? The guy at the parts store tells me there is one on the back of the engine and one on one of the sides. Can someone be a bit more specific? And tell me what it is I'm looking for? Is the one on the back of the engine only replaceable if I separate the engine/tranny or is it accessable?

I'd like to check to see if they are either loose or bad connections before I spend money and time to replace them.

Thanks in adavance.

Dave