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GMC 3764601 Seal

1985-2014 GMC

Customer Questions & Expert Answers (2)
3764601 GM Seal Product Photo 1 of 1
  • Part Description
    Seal, Output Shaft
  • Manufacturer
    General Motors
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  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number3764601
    Part DescriptionSeal; Seal, Output Shaft
    Item Dimensions4.2 x 2.4 x 0.7 inches
    Item Weight0.40 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU3764601
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1988-1998, 1985-1986 GMC C15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L DieselC1500 EXTENDED CAB LONG BOX, C1500 EXTENDED CAB STANDARD BOX, C1500 REGULAR CAB LONG BOX, C1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1998, 1985-1986 GMC C25006 Cyl 4.3L, 6 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel, 8 Cyl 7.4LC2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB, CREW CAB, REGULAR CAB
    1988-1991, 1985-1986 GMC C35006 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4LC3500 CAB CHASSIS 135.5, C3500 CAB CHASSIS 159.9, C3500 CAB CHASSIS 183.5, C3500 EXTENDED CAB, C3500 REGULAR CAB, CAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, REGULAR CAB
    1985-1995 GMC G15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L1/2 TON CARGO, 1/2 TON PASSENGER
    1985-1995 GMC G25006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel1/2 TON CARGO, 1/2 TON PASSENGER, 3/4 TON CARGO, 3/4 TON PASSENGER
    1985-1995 GMC G35006 Cyl 4.3L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel, 8 Cyl 7.4L1 TON CARGO, 1 TON CARGO VAN, 1 TON COMMERCIAL/RECREATIONAL VEHICLE, 1 TON PASSENGER
    1985-1991 GMC Jimmy6 Cyl 2.8L, 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel1/2 TON
    1988-1992, 1985-1986 GMC K15006 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L DieselK1500 EXTENDED CAB LONG BOX, K1500 EXTENDED CAB STANDARD BOX, K1500 REGULAR CAB LONG BOX, K1500 REGULAR CAB STANDARD BOX, REGULAR CAB LONG BOX, REGULAR CAB STANDARD BOX
    1988-1992, 1985-1986 GMC K25006 Cyl 4.3L, 6 Cyl 4.8L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 6.5L Diesel, 8 Cyl 7.4LK2500 EXTENDED CAB LONG BOX, K2500 EXTENDED CAB STANDARD BOX, K2500 REGULAR CAB, REGULAR CAB
    1988-1991, 1985-1986 GMC K35006 Cyl 4.8L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4LCAB CHASSIS 135.5, CAB CHASSIS 159.9, CREW CAB, K3500 CAB CHASSIS 135.5, K3500 CAB CHASSIS 159.9, K3500 EXTENDED CAB, K3500 REGULAR CAB, REGULAR CAB
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  • Customer Questions & Expert Answers

    Q:
    Is it correct part number for my vehicle?
    A:
    You can Select Your Vehicle to check if 3764601 fits your vehicle.
    Posted and answered by GM Parts Specialist Ed
    Q:
    How to replace Transfer Case Seal on Chevrolet Caprice? Posted by Shearon S.
    A:
    It is possible to make this operation on the transmission while it is still mounted on the car in question. Park the car over a raised platform, or otherwise lift it on a jack but have it supported by jack stands. Remove the gearbox shaft connection to the driveshaft and use a screwdriver or a chisel to remove the bad rubber seal. Paint gasket sealer all the way around the outside edge of the new seal, place the piece of pipe or a socket over the sealer and tap it with a hammer until the new seal is installed. Last, but not least, fit in the driveshaft of the vehicle and check the fluid quantity in the transmission unit.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Jan 17, 2026

Genuine GM Part 3764601, the Right Choice

To ensure reliability, purchase GM part # 3764601 Seal. It is sometimes referred to as GMC Transfer Case Seal, GMC Automatic Transmission Seal. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC Sierra, Suburban, Yukon models.

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