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 someotherguy
Moderator
Posts: 23555
Age: 43
Loc: Texas
Reg: 08-01-03
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07-23-12 03:36 PM - Post#2251303
In response to fuzzyff
What's with the attitude, fuzzy?
On the original poster's '88, there is an oil pressure sensor for the gauge - it's located on the driver's side of the block near the oil filter. There's also an oil pressure switch, which is part of the fuel pump circuit; it's located on the top of the block behind the rear of the intake. Around '91, these two units were combined into a combo unit that lives in the top of the block/behind intake location.
The parts are absolutely different numbers yet many parts houses have difficulty telling them apart because too many of their employees are inexperienced.
How is the original poster supposed to check with GM about his 1988 model truck? "Only the factory knows, for sure" ?? What do you base that on?
Oil pressure sending unit for the side of the block, feeds the gauge, Standard # PS269
Oil pressure switch for the top rear of the block, part of fuel pump circuit, Standard # PS211
MRBIGROD - reach down behind the distributor and pop the connector off the sender, see if it has the rounded edge multi-pin connector that would plug into that second item pictured.
Richard
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