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Thread: 1999 gmc sierra

  1. #1
    Boolit Buddy
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    1999 gmc sierra

    Hi, I need some help. I need to replace a part and have no idea what it is called. It's a metal bracket under the plastic trim that covers the wiring that runs on the inside of the truck, on top of rocker panel. Your boots hit this plastic every time you get in or out. This bracket I need to replace is a pile of rust. I'd send a pic but it's a pile of rust. Ironically, the truck metal around it is in good shape. Thanks for the help.

  2. #2
    Boolit Grand Master
    Mk42gunner's Avatar
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    Butler, MO
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    Threshold?

    Maybe look for a body parts diagram online to see what its real name is, and if any are available. GMC/Chevrolet made a lot of trucks/SUVs on that platform, you might find a good one at a junkyard.

    Robert

  3. #3
    Boolit Buddy
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    Rocker wiring gutter? Maybe LMC truck has something for it since it's classic now.

  4. #4
    Boolit Buddy
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    If you have a friendly parts guy/gal at a local GM dealership they can pull up the parts diagram and get you the part number. They can also check and see if one might be sitting on the shelf someplace and have it shipped in.

  5. #5
    Boolit Master


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    No clue my 2001 GMC frame rotted out in 2020. Bye Bye truck

  6. #6
    Boolit Master
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    Long, Wide, Deep, and Without Hesitation!

  7. #7
    Moderator Emeritus

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  8. #8
    Boolit Master
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    sounds like the step plate but in my 99 they are plastic and lock down with small metal clips havent seen metal one since 86/87? maybe i'm thinkin wrong part.

  9. #9
    Boolit Buddy
    Join Date
    Dec 2010
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    Southern Wisconsin
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    Found it. Front door sill plate retaining bracket. Thanks all for the input.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check