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GMC 84045104 Knuckle

2011-2019 GMC

Customer Questions & Expert Answers (3)
84045104 GM Knuckle Product Photo 1 of 2
  • Part Description
    Knuckle, Steering
  • Replaces
    20872163, 22752927
  • Manufacturer
    General Motors
Make sure this part fits
$242.32 MSRP: $374.15
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine GMC
    Manufacturer Part Number84045104
    Part DescriptionKnuckle; Knuckle, Steering
    Item Dimensions21.2 x 15.1 x 13.1 inches
    Item Weight32.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces20872163, 22752927
    ManufacturerGeneral Motors
    SKU84045104
    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
    2011-2019 GMC Sierra8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.6L Diesel1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5
    2011-2013 GMC Yukon8 Cyl 6.0L Flex3/4 TON
  • Customer Questions & Expert Answers

    Q:
    Do these parts fit my vehicle?
    A:
    You can Select Your Vehicle to check if 84045104 fits your vehicle.
    Posted and answered by GM Parts Specialist Raul
    Q:
    What is the first step in the wheel removal process for the 2015 Cadillac Escalade involving the Steering Knuckle? Posted by Ulysses C.
    A:
    Loosen the wheel lug nuts, raise the vehicle, and support it securely on jackstands before removing the wheel. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Aug 29, 2025
    Q:
    What should be disconnected from the Steering Knuckle for the 2012 GMC Sierra? Posted by Pintauto A.
    A:
    Disconnect the tie-rod end from the steering knuckle, and disconnect the upper and lower arms from the steering knuckle. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Apr 29, 2026

Genuine GM Part 84045104, the Right Choice

To ensure reliability, purchase GM part # 84045104 Knuckle. It is sometimes referred to as GMC Steering Knuckle. 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, Yukon models.

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