Make sure this part fits

Chevrolet 12479123 Differential

2002-2012 Chevrolet

Customer Questions & Expert Answers (3)
12479123 GM Differential Product Photo 1 of 1
  • Part Description
    DIFFERENTIAL
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Specifications
  • Fitment
  • Q&A
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12479123
    Part DescriptionDIFFERENTIAL
    Other NamesDifferential Case
    Item Dimensions11.7 x 11.2 x 10.1 inches
    Item Weight19.20 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12479123
    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
    2004-2012 Chevrolet Colorado4 Cyl 2.8L, 4 Cyl 2.9L, 5 Cyl 3.5L, 5 Cyl 3.7L, 8 Cyl 5.3LCREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP
    2002-2009 Chevrolet Trailblazer6 Cyl 4.2L, 8 Cyl 5.3L4 DOOR
  • Customer Questions & Expert Answers

    Q:
    I'm wondering if this is complete and correct part for my vehicle.
    A:
    You can Select Your Vehicle to check if 12479123 fits your vehicle.
    Posted and answered by GM Parts Specialist Julian
    Q:
    What should you do after disconnecting the driveshaft and the Differential for the 2008 GMC Canyon? Posted by Kylee H.
    A:
    Wrap tape around the bearing caps to prevent them from falling off. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Jeremy / Jan 20, 2026
    Q:
    What components need to be removed next for the Differential in the 2006 Chevrolet Trailblazer? Posted by Victoria G.
    A:
    Remove the under-vehicle splash shield and drain the engine oil and front differential lubricant. You can Select Your Vehicle to see complete installation and repair tips.
    Answered by GM Parts Specialist Nicholas / Aug 03, 2025

Genuine GM Part 12479123, the Right Choice

To ensure reliability, purchase GM part # 12479123 Differential. It is sometimes referred to as Chevrolet Differential. 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 Chevrolet Colorado, Trailblazer models.

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