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  1. #1

    Default It appears that the Silverado's hood uses a ground strap, why?

    The other day I was under the hood and noticed that there appears to be a ground strap from the body to the hood. What function does this serve? I would figure that the hinges being bolted to the body would serve as a ground.

  2. #2

    Default

    I believe that the ground strap is there for the underhood light, which you may or may not have depending on the year and model of your truck. All of my trucks have had the strap, but in 2003 they stopped making the light standard so my 01 had it, my full load 03 avalanche doesn't, and my base model 03 Sierra 3500 does. But, that would be the only reason for the ground strap on the hood - just because the hinges aren't designed as grounds, so the strap is there to ensure proper grounding.

    2001 Silverado Reg. Cab Not-So-Base -- SOLD
    2003 Avalanche Z71. No Cladding. Check out my Mod thread.
    1974 Triumph Spitfire 1500 - Work in Progress
    2003 Sierra 3500 Duramax. The Newer, Better Work Truck


  3. #3

  4. #4
    Legend

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    Default

    I have installed ground straps on all my vehicles over the years. this helps to reduce radio interference as well as the underhood light return. the hinge does make a poor conduction path for current flow.

  5. #5

    Default

    my 05 yukon Xl has the strap, no light

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  6. #6

    Default

    The painted hinges and the painted hood surfaces make for a very unlikely ground. The ground is needed for any light connection, and it does help with shielding unwanted RF signals. Keeping all body panels at the same voltage potential is key to reducing unwanted noise in the electrical systems.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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