1. Welcome to PlowSite. Notice a fresh look and new features? It’s now easier to share photos and videos, find popular topics fast, and enjoy expanded user profiles. If you have any questions, click HELP at the top or bottom of any page, or send an email to help@plowsite.com. We welcome your feedback.

    Dismiss Notice

2011 Chevy 3500hd firewall hole

Discussion in 'Chevy Trucks' started by dlcs, Oct 11, 2011.

  1. dlcs

    dlcs 2000 Club Member
    Messages: 2,160

    My new truck is suppose to have a hole in the firewall predrilled for the plow harness. Has anyone ever found this hole? I've looked everywhere. I know i can drill one but I want to know where this one is or if it actually exists.
  2. Newdude

    Newdude Senior Member
    Messages: 889

  3. dlcs

    dlcs 2000 Club Member
    Messages: 2,160

    I checked the upfitter site and the hole is not where its suppose to be.
  4. Schnabel Plowin

    Schnabel Plowin Senior Member
    Messages: 139

    Check with your dealer service center?
  5. Cosmic Charlie

    Cosmic Charlie Senior Member
    Messages: 237

    My 2011 2500 HD gas has the hole about 10 inches below the hood seal somewhat under the brake res. ...
  6. Deckscapes

    Deckscapes Senior Member
    Messages: 241

    If you look on the firewall from inside the cab, there is a * marking on the firewall liner where you can easily drill a hole thru the firewall without interrupting anything
  7. Raconteur

    Raconteur Senior Member
    from MA
    Messages: 138

    The hole has an odd shape rubber grommet in it .
  8. topdj

    topdj Senior Member
    Messages: 396

    I found mine its little bit of a pain because the terminal block below it
  9. dlcs

    dlcs 2000 Club Member
    Messages: 2,160

    So do you have to drill it out or is it already drilled? I'm going to look again but i cant find one on mine.