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GM Front For 2500 and 3500 HD Trucks
    GM Front For 2500 and 3500 HD Trucks
    Purchase GM Front For 2500 and 3500 HD Trucks
    • GM Front For 2500 and 3500 HD Trucks
      Part Number 11120

    • Front differential cover for 2011 and newer GMC/Chevrolet 2500HD, 3500HD trucks. Please sign up for mailing list below so we know people are interested.

    Number of Bolts: 14 holes, 12 large holes for bolts, 2 small holes for brackets/clips for cables

    Status: PML is working on a front differential cover for 2011 and newer Silverado and Sierra 2500HD and 3500HD trucks. Computer model is in process.

    Ring gear is 9.25 or 9.5.

    AC Delco part numbers:

    • Part Number 84756922 for 2020 and newer trucks
    • Part Number 20768577 for 2011 to 2019 trucks

    The OEM factory covers look the same. We will be comparing the size, shape and bolt hole patterns to confirm.

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    Let us know you are interested in this cover by signing up for our mailing list. We email only two or three times a year and never sell or share information

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    Stock Covers

    There are two part numbers for the front stock cover. Part Number 20768577 and 84756922. Covers look the same.

    Pictures of stock cover part number 84756922, outside, inside and box with part number:
    GM HD stock front differential cover   GM HD stock front differential cover, inside   GM HD stock front differential cover, part number
    Click on image to view larger.

    Pictures of stock cover on 2015 Silverado 2500HD diesel double cab:
    GM front differential cover on 2015 Silverado 2500HD diesel truck   GM front differential cover on 2015 Silverado 2500HD diesel truck, side view
    Click on image to view larger.

    Pictures of stock cover on 2022 Silverado 2500HD 4x4 gas engine truck. Skid plate under front axle is standard.
    GM front differential cover on 2022 Silverado 2500HD gas truck, with skid plate   GM front differential cover on 2022 Silverado 2500HD gas truck, front view
    Click on image to view larger.