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So I replaced the oil pressure sending unit because it was leaking and it reads 20lbs less than the old. Here it is in drive when it has warmed up. It’s within specs so they won’t warranty it out.
Stop guessing which pressure is correct..... put a real test oil pressure gauge on it. I have this one. OTC is a good brand for accuracy. Lots of Factory GM tools are OTC. $56 is a good price - I paid more when I bought mine.
10-09-2019, 08:57 AM
New oil pressure switch reading 20lbs less
