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  1. #1
    Jr. Apprentice
    Join Date
    Apr 2011
    Location
    Lumberton, TX
    Posts
    19

    Default Fluctuating Oil Pressure 2001 Silverado 1500hd

    The oil pressure in my 2001 Silverado 1500hd 6.0 is fluctuating. According to the pressure gauge in the instrument cluster, it has normally stayed around 45psi. Here lately it has been dropping when I am at idle until I have driven for a while. At first it was only dropping to about 20psi and now has started dropping all the way to 0psi and my "Check Engine Oil Pressure" light comes on. When I give it gas it will jump back up to 45. Is it possible that this might be just a sending unit issue, or would this be my pump going out? Thanks in advance for the help.

  2. #2

    Default

    I would have the pressure checked to see if the readings are accurate. if they are not accurate the instrument clusters in those had problems and tended to go bad causing the gauges to go all haywire. If the readings are accurate I cant help with diagnosing your issue, sorry.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  3. #3
    Jr. Apprentice
    Join Date
    Apr 2011
    Location
    Lumberton, TX
    Posts
    19

    Default

    Thanks for the input. Just realized how cheap and easy the sending unit is to change. I am going to replace it and see if that fixes it.

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