Oil Sending Unit - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-30-2003, 03:14 PM   #1
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Default Oil Sending Unit

Where is the oil sending unit at? I need to replace it. Thanks.
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Old 01-30-2003, 03:50 PM   #2
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Under the hood!

Ok, I can be a wiseass sometimes. Welcome to the forum!

Under the car, below the power steering pump and directly above the oil filter. It sticks out the 'rear' of the engine, facing the passenger side of the firewall. It has a 2-wire connector on it. Looks kinda like a big spark plug or O2 sensor.

What year and model is your car? You should put that in your signature. It'll help us to help you a ton.
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Old 02-01-2003, 04:19 PM   #3
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Thanks, I found it, but I couldn't get at it. Its so far in there, I didn't have a tool that would twist it out. I wonder how much it would cost to do at a maintnence shop.
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Old 02-01-2003, 04:48 PM   #4
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Probably pretty cheap. An hours labor minimum....maybe 60 bucks labor. Check your local auto parts store. The tool to pull it may be cheaper.

Jr, haven't you done this before?
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Old 02-01-2003, 09:22 PM   #5
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ive had this prob before.. its a pretty easy fix job, as long as you have a hoist i hate creepers
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Old 02-01-2003, 10:06 PM   #6
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I replaced mine. Got better access by removing the passenger front wheel and reaching it through there. Got dirty, but is an easy thing to change once you get at it.
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Old 02-01-2003, 11:25 PM   #7
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I replaced it on my 93. I did the same thing. Took off the passenger front wheel and mud splash guard, and it was right there. I think I used a crescent wrench.
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Old 02-02-2003, 02:15 PM   #8
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What problems do you get with a bad oil sender?
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Old 02-02-2003, 02:19 PM   #9
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On mine the oil gauge pressure starting reading too high.
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Old 02-03-2003, 10:08 PM   #10
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Thanks for the tips guys. I'll try removing the passenger side tire to get at it. My car has been acting really strange lately and I'm hoping that the problem is the oil sending unit. The RPM'* go up and down whenever the oil pressure gauge is goes into the red zone. After awhile, my car just dies. It seems as if my car is bogging. Would you think it could be the fault of the oil sending unit?
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