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Thread: 82 suburban fuel gauge shut down my truck?

  1. #1
    Join Date
    Dec 2015
    Location
    Indiana
    Posts
    1

    Default 82 suburban fuel gauge shut down my truck?

    Have a 1982 suburban diesel. The fuel gauge is slowly dropping down to empty, even though the tank is full. My question is, if it gets all the way down to empty, will this create a problem? I am wondering if the truck will think the tank is empty even though there is fuel, and not run. I'm ok if it just doesn't work, but I'm afraid it will shut my truck down. Please help as this is my daily driver and I can't really take it apart to figure out the fuel gauge at this time. Thanks in advance!

  2. #2
    Join Date
    Mar 2000
    Location
    South Central Pennsylvania, USA
    Posts
    2,697

    Default

    An ’82 would be fully mechanical, so fuel gauge reading is in no way tied to operation. Someone wiser than me would have to tell you if a computer controlled vehicle would even be that tied into things.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  3. #3
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Simply, your truck doesn't "think". 1982 trucks aren't "smart", but even the newer rolling supercomputers will operate normally with a failed gage or tank sender. On your truck, there's no "computer" interface between the tank and the engine/fuel systems, and the ignition switch controlled solenoid in the injection pump is the only physical device that will stop fuel flow to the pump. Once running, only that solenoid will stop it, until the fuel supply is actually interrupted (actual empty tank, leak, blockage, etc.).
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

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