Oil Pressure gauge pegged

Discussion in 'Interior' started by Buffdriver, May 9, 2018.

  1. Buffdriver

    Buffdriver TYF Newbie

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    On a recent trip, my 05 Denali oil pressure gauge went to 80psi (the stop) and stayed there. No other issues, runs as normal. Gauge went to zero with ignition off, but went back to 80 when turned on again. Sensor? Wiring?
     
  2. HiHoeSilver

    HiHoeSilver Away! Supporting Member

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    If it goes to 80 with key on engine off, it's the sending unit 99% of the time every time.
     
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  3. Doubeleive

    Doubeleive Elite Member Supporting Member

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    ^^^ what he said, try unplugging the sensor and see what it does
     
  4. Buffdriver

    Buffdriver TYF Newbie

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    Where is the sensor located (6 liter?)
     
  5. Sasquatch

    Sasquatch Full Access Member

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    Here`s a short video on where it is. I have hands the size of catchers mitts so i could not get my hand in there to change it. I had my normal size friend change it in about two minutes.

     
  6. BlueCollarTahoe

    BlueCollarTahoe Full Access Member

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    that sensor is a pain in the ass the change. check and make sure its the sending unit first...much easier to repair!
     
  7. SnowBuck

    SnowBuck Full Access Member

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    2005 XL - exact same problem. New sending unit fixed it. The shop had some special tool to do it = easy for them. Top rear of the engine.
     

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