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  1. #1
    Sr. Mechanic chevyman2004's Avatar
    Join Date
    Jul 2009
    southwest Minnesota

    Default plastic bed rail covers shrinking?

    haven't been in for a while how ya all doin? i got a question about my plastic bed rail covers. I started noticing this winter that my bed rail covers started to pop up and there is a nice gap forming from the rear going forward. i am wondering if this is shrinkage from cheap plastic covers or just the cold. If it is cheap plastic is there a way i can remove them without hurting the paint and get some real good rail covers on? any advice is much appreciated.

    2004 Chevy Silverado 2500HD:sign0011:
    6.0L Vortec
    Magnaflow 4" Dual Exhaust
    Leveling Kit
    Westin step bars
    Penda Skid Resistor bed liner
    dark blue metallic
    Bak Industries plastic bed rail caps
    Alpine 6 1/2" SPS-600 in front
    Alpine 6 1/2" SPG-17C2 in rear
    Bilstein HD Shocks front and rear
    Goodyear Wrangler Duratracs LT265/75/R16
    Access Lorado Roll-up soft tonneau cover

  2. #2


    I have the plastic factory bed rail caps on mine and after I installed the tonneau cover the heat build up in the bed made them buckle, I'm thinking about removing them and having the Line-x extended over the bed rails instead. You can see how bad it's getting in the pic, in my signature pic they are straight.


  3. #3
    Legend mmorgan1865's Avatar
    Join Date
    Feb 2010
    Port Orange, Florida


    I think Adam has the best solution. The rail covers would have to be pretty thick to withstand really cold conditions.
    2010 Silverado Ext. Cab LTZ 2 WD 6 ft bed
    5.3L 6 speed w\ 3.08 rear end
    Navigation Package
    Westin lighted boards
    Undercover SE tonneau cover
    It's a start!

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