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
  • 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
    Warning: California's Proposition 65
  • 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 Support Brace 12479997 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12479997 Support Brace is available in the market under the name GM Front Cross-Member. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12479997 Support Brace fits certain Chevrolet Tahoe, Silverado 1500, Suburban 1500 models, as well as GMC Sierra 1500, Yukon, Yukon XL 1500. Additionally, it is compatible with Cadillac Escalade models.
The original GM component designated by manufacturer part number 12479997 maintains top performance when functioning as the Crossmember, Frame Cross, Intermediate (Transmission Support Cross Member) unit at its Front. The component 12479997 is constructed from durable material and its dimensions span 24.5 x 4.7 x 6.0 inches while weighing 13.20 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Crossmember, Intermediate(Transmission Support Cross Member). The part 12479997 has available replacement options. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
If you want to save money in the long run on maintenance and repairs, you should choose OEM products because they're of the top level of durability. Are you on the quest of finding GM parts, our site is worth a visit. We stock an endless selection of high-quality GM components including things like ignition coils all the way through to fan shrouds and all at prices that can not be matched. You have nothing to worry about because all our OEM parts are covered with a manufacturer warranty, which guarantees superior quality and value.