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Thread: Oil pressure sensor pinout

  1. #1
    Lifetime Member Gregs's Avatar
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    Default Oil pressure sensor pinout

    Guys,

    I'm having some RFI issues with my oil pressure sending unit. I've put some snap on ferrite chokes next to the sensor and they help a little but not enough. I want to place some more chokes on the wires right before they go into the computer. I've looked online but I cant find the pinout for the three wires going into the PCM...they go to the PCM right?

    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

  2. #2
    Lifetime Member Chevy366's Avatar
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    2005 1500 HD , Custom OS3 SD tune .
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  3. #3
    Lifetime Member Gregs's Avatar
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    Quote Originally Posted by Chevy366 View Post
    Thanks, but I looked through that this morning and didn't find it. A see Blue 70 is oil level switch but the oil level switch is different than the oil pressure sensor. Blue 70 is the only one that mentions oil at all, that's why I was wondering if the sensor goes somewhere else and not to the PMC.
    Last edited by Gregs; March 12th, 2015 at 05:52 AM.

    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

  4. #4
    Lifetime Member Gregs's Avatar
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    Ok, so I was looking at an incomplete chart before. I found red 58 as the oil pressure signal pin. There are three wires going to this sensor. I'm sure the other two are +5v and ground. The pinout I have lists multiple +5v and grounds. Does anyone have a diagram that explicitly says which reference voltage is going to which sensor? I want to put a choke on all three wires at the PCM because I'm thinking that one of them is resonant on the RF frequency I'm having issues with.

    03 Silverado 5.3 ECSB 4x4 Z71
    Comp Cam 206/212 .515/.522 112 lSA, hardened rods with LS9 springs

    2010 Tahoe VVT AFM 5.3
    Stock for now

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