Make sure this part fits

GM 12479997
Support Brace

1999-2007 GM

Customer Questions & Expert Answers (9)
GM 12479997 Support Brace
  • Part Description
    Crossmember, Frame Cross, Intermediate (Transmission Support Cross Member)
  • Position
    Front
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12479997
    Part DescriptionCrossmember, Frame Cross, Intermediate (Transmission Support Cross Member)
    Other NamesCrossmember, Intermediate(Transmission Support Cross Member)
    Item Dimensions24.5 x 4.7 x 6.0 inches
    Item Weight13.20 Pounds
    PositionFront
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12479997
    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 Trim Engine
    2002-2004 Cadillac EscaladeBase8 Cyl 5.3 L GAS
    1999-2006 Chevrolet Silverado 1500Base, Hybrid, LS, LT, SS, WT, Z71 Off-Road6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2007 Chevrolet Silverado 1500 ClassicHybrid8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV)
    2001-2003 Chevrolet Silverado 1500 HDLS, LT8 Cyl 6.0 L GAS
    2000-2004 Chevrolet Suburban 1500Base, LS, LT8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    2000-2004 Chevrolet TahoeBase, LS, LT8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    1999-2006 GMC Sierra 1500Base, C3, Denali, HT, Hybrid, SL, SLE, SLT, WT6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2007 GMC Sierra 1500 ClassicHybrid8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV)
    2001-2003 GMC Sierra 1500 HDSLE, SLT8 Cyl 6.0 L GAS
    2000-2004 GMC YukonSLE, SLT8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    View More
  • Customer Questions & Expert Answers

    Q:
    Is this 12479997 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12479997 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the final step after installing the crossmember for the 2004 Chevrolet Silverado 1500? Posted by Customer
    A:
    Reinstall the differential carrier shield and lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    What must be ensured before installing the bolts for the 2007 Chevrolet Silverado 1500 Classic? Posted by Customer
    A:
    All traces of the original adhesive patch are removed.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    How should the threads of the bolts be prepared for the 2002 Chevrolet Tahoe? Posted by Customer
    A:
    Clean the threads of the bolts with denatured alcohol or an equivalent and allow them to dry.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    How should the threads of the bolts be prepared for the 2002 Chevrolet Suburban 1500? Posted by Customer
    A:
    Clean the threads of the bolts with denatured alcohol or an equivalent and allow them to dry.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    What product should be applied to the bolts for the 2007 GMC Sierra 1500 Classic? Posted by Customer
    A:
    Threadlocker GM P/N 12345493 (Canadian P/N 10953488).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    What is the first step to replace the front engine crossmember for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    Raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    What is the first step to replace the front engine crossmember for the 2004 GMC Yukon? Posted by Customer
    A:
    Raise and support the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    Q:
    What is the first step in the installation process for the 2001 GMC Yukon XL 1500? Posted by Customer
    A:
    Position the engine crossmember.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Front Cross-Member
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 12479997, Excellent Performance and Perfect Fitment

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