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  1. #1
    Jr. Apprentice
    Join Date
    Jul 2008
    Location
    Soon to be Lima, OHIO
    Posts
    21

    Default 8.1 BBC oil pressure sending unit location?

    Hey guys,
    I just have a short question. Where is the oil pressure sending unit (-switch) located on the 8.1 vortec engine? I was looking at it and i think that its right by the oil filter location but it only has one wire. The one that i saw on the internet has a three wire connector so that doesnt work. Im staying at a hotel right now so its hard for me to look at it without getting dirty but i was thinking on the back of the engine on top is where they are normally located on a chevy.

  2. #2
    Jr. Apprentice Wayne S's Avatar
    Join Date
    Sep 2007
    Location
    Charles Town, WV
    Posts
    14

    Default

    It's on the back of the block just below the intake manifold. It's pretty hard to see, let alone get to. Mine went bad last year and my gauge shows 0 psi. I bought a new sending unit, but everytime I try to get to the old one, my arm gets stuck and I just give up. A buddy of mine owns a shop and told me to bring it in, i just ahven't gotten around to it.
    2004 Suburban 2500 4x4 - 8100, 4.10s - DD
    1970 Camaro - 406/TH350 - street/strip - my 11 oh weekend toy

  3. #3
    Jr. Apprentice
    Join Date
    Jul 2008
    Location
    Soon to be Lima, OHIO
    Posts
    21

    Default

    Yeah i just found it too and thanks for the reply.lm in the same situation youll need a extra tool with an extension !!!! man they realll put it down there on the intake.I got the part but ill have to see when i got time;.

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