Knock sensor locations

[adamsespico]

I have a 1993 GMC Sonoma tbi 4.3l auto trans rwd. I have trouble code 43 coming up and I was wondering where the knock sensors are located so I can replace them. all the sensors I've found do not look like the new one. Thanks ahead of time

 

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[grampadirt]

On a '95 454 it's on the outside of the block next to the starter,can't say on a 4.3.Have a look around on the block below the exhaust manifolds,should be a wire going to it.

[Jsdirt]

4.3 has it on the rear of the block behind or beside the distributor.