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GM 15798948
Muffler

2002-2007 GM

Customer Questions & Expert Answers (12)
GM 15798948 Muffler
  • Part Description
    Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W
  • Replaces
    15077763, 15077779, 15147353, 15103189, 15113063
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Vehicle Fitment

    Year Make Model Trim Engine
    2003-2004 Chevrolet Silverado 1500LS, LT, SS8 Cyl 6.0 L GAS
    2002-2003 Chevrolet Silverado 1500 HDLS, LT8 Cyl 6.0 L GAS
    2002-2004 Chevrolet Silverado 2500Base, LS, LT, WT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2002-2004 Chevrolet Silverado 2500 HDBase, LS, LT, WT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
    2006, 2002-2004 Chevrolet Silverado 3500Base, LS, LT, WT8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
    2007 Chevrolet Silverado 3500 ClassicLS, LT, WT8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
    2002-2004 GMC Sierra 1500Base, Denali, SLE, SLT, WT8 Cyl 6.0 L GAS
    2002-2003 GMC Sierra 1500 HDSLE, SLT8 Cyl 6.0 L GAS
    2002-2004 GMC Sierra 2500Base, SL, SLE, SLT, WT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2002-2004 GMC Sierra 2500 HDBase, SL, SLE, SLT, WT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
    View More
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 15798948 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 15798948 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What specific steps are needed for 6.0L or 8.1L engines for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Remove the exhaust muffler, detach the clip around the engine harness and oxygen sensor pigtail, disconnect the connector position assurance (CPA) retainer, and the oxygen sensor electrical connector before removing the oxygen sensor.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the installation process for the 6.6L engine after replacing the muffler for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Install the insulators to the muffler hangers with lubricant, install a new exhaust muffler gasket, slide the muffler forward to connect it to the exhaust muffler pipe, and install the insulators to the frame hangers.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done after installing the muffler for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Lubricate and install the insulators to the muffler hangers and frame hangers, then install a new exhaust muffler gasket and a new exhaust manifold pipe gasket.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    How should the new exhaust pipe be positioned during installation for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Position the exhaust pipe with a NEW gasket to the turbocharger, ensuring the tab on the gasket faces inward, and loosely install the bolts.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the final step in the process for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Reinstall the transmission support crossmember and its bolts, tightening them to 95 Nm (70 ft. lbs.), lower the transmission onto the support, and install the transmission mount to transmission support nuts, tightening to 40 Nm (30 ft. lbs.). Finally, remove the support from the transmission and lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What are the last steps to complete the muffler replacement for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Raise the rear axle, install the rear shock absorbers lower bolts and nuts, tightening them to 95 Nm (70 ft. lbs.), reconnect the rear axle vent hose and swivel clip as necessary, remove the adjustable jack stands, install the spare tire if needed, and lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done after reinstalling the muffler assembly for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Raise the rear axle using the adjustable jack stands, reinstall the rear shock absorber lower bolts and nuts, tightening them to 95 N.m (70 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done if the lower bolts and nuts of the rear shock absorbers need to be removed for the 2006 GMC Sierra 3500? Posted by Customer
    A:
    Remove them and then lower the rear axle using the adjustable jack stands.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done to the transmission after detaching the exhaust components for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Lower the transmission slightly with the jack and separate any necessary exhaust muffler insulators to allow for the removal of the exhaust manifold pipe.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What are the last steps to complete the process for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Remove the adjustable jack stands, reinstall the spare tire if removed, and lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be adhered to while tightening the exhaust muffler nuts for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    Adhere to the Fastener Notice in Service Precautions.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Muffler 15798948 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 15798948 Muffler is available in the market under the name GM Exhaust Pipe, Muffler. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 15798948 Muffler fits certain Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 2500 models, as well as GMC Sierra 1500, Sierra 2500 HD, Sierra 2500 models.
The original GM component designated by manufacturer part number 15798948 maintains top performance when functioning as the Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W unit. The component 15798948 is constructed from durable material and its dimensions span 154.1 x 26.3 x 14.7 inches while weighing 70.80 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Muffler, Exhaust. The part 15798948 has available replacement options 15077763, 15077779, 15147353, 15103189, 15113063. 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.
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