Menu
×
Search Bar
Search by Part Number, Part Name, or Vehicle
My Garage
Cart
Help Center Contact Us
Make sure this part fits

GM 15798954
Muffler

2002-2007 GM

Customer Questions & Expert Answers (13)
GM 15798954 Muffler
  • Part Description
    Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W
  • Replaces
    15147362, 15113073
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • 2007 GMC Sierra 2500 HD Classic Muffler Diagram for 15798954
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 15798954

  • Vehicle Fitment

    Year Make Model Trim Engine
    2003-2005 Chevrolet Silverado 1500LS, LT, SS8 Cyl 6.0 L GAS
    2005, 2002-2003 Chevrolet Silverado 1500 HDBase, LS, 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
    2002-2006 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
    2007 Chevrolet Silverado 2500 HD ClassicLS, LT, WT8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
    2002-2006 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 8.1 L GAS
    2002-2005 GMC Sierra 1500Base, Denali, SLE, SLT, WT8 Cyl 6.0 L GAS
    2005, 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
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 15798954 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 15798954 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What should be done if it has an 8.6 or 9.5 inch ring gear, or a 10.5 inch ring gear for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Install adjustable jack stands under the rear axle, remove the rear axle vent hose, and vent hose swivel clip from the rear brake crossover pipe.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done if the exhaust manifold pipe gasket needs to be removed for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Remove it, and for the 6.6L engine, also remove the insulators from the frame hangers before sliding the muffler rearward.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    How should the exhaust pipe hanger bracket be prepared for installation for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Lubricate the exhaust pipe hanger bracket for easier installation.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the first step to replace the right exhaust pipe on a 6.6L (LLY) engine for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    First, remove the turbocharger exhaust pipe and then the exhaust pipe bolts in the proper sequence.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the procedure for removing the muffler for 6.6L engines for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Remove the insulators from the frame hangers and the exhaust muffler gasket if necessary.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done after tightening the exhaust manifold pipe for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Raise the transmission, and if the exhaust manifold pipe was replaced, apply anti-seize compound GM P/N 12377953 to the old oxygen sensor threads and install it, tightening to 42 Nm (31 ft. lbs.). If not replaced, connect the oxygen sensor electrical connector, CPA retainer, and the clip around the engine harness.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What should be done after removing the oxygen sensor for the 2005 GMC Sierra 3500? Posted by Customer
    A:
    Remove the exhaust manifold pipe nuts, lower the transmission slightly, and for the 6.6L engine, remove the exhaust muffler nuts and loosen the exhaust pipe clamp, sliding it up onto the exhaust pipe adapter.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the next step after removing the exhaust muffler nuts for 6.0L or 8.1L engines for the 2005 GMC Sierra 3500? Posted by Customer
    A:
    Remove the insulators from the frame hangers, slide the muffler rearward to detach it from the catalytic converter, and remove the insulators from the muffler hangers.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What are the torque specifications for the exhaust muffler clamp and the exhaust muffler to exhaust manifold pipe nuts for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Tighten the exhaust muffler clamp to 47 N.m (35 lb ft) and the exhaust muffler to exhaust manifold pipe nuts to 45 N.m (33 lb ft).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done after installing the muffler for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    Install the exhaust muffler nuts, ensuring to tighten them to 40 Nm (30 ft. lbs.).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done to facilitate the removal of the muffler assembly for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Remove the catalytic converter to muffler nuts and lubricate the 5 insulators where the muffler assembly hangers are inserted.
    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
    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 15798954 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 15798954 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 15798954 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 15798954 maintains top performance when functioning as the Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W unit. The component 15798954 is constructed from durable material and its dimensions span 127.3 x 25.8 x 17.6 inches while weighing 64.30 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 15798954 has available replacement options 15147362, 15113073. 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.