On my 85, and I'm sure on the rest of the LE9 engines, the knock sensor is on the passenger side front of the block. On some engines they had oil pressure senders in front of the oil filter, but it sure wouldn't have 3-5 wires going to it. I'm not sure when they quit putting the oil pressure sender in front of the oil filter. Also, the knock sensor don't have 3-5 wires either.
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Mike
1985 Chevy C-10
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