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
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number15798954
    Part DescriptionMuffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W
    Other NamesMuffler, Exhaust
    Item Dimensions127.3 x 25.8 x 17.6 inches
    Item Weight64.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces15147362, 15113073
    ManufacturerGeneral Motors
    SKU15798954
    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
    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
  • 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 15798954, Excellent Performance and Perfect Fitment

To ensure reliability, purchase GM part # 15798954 Muffler. It is sometimes referred to as GM Exhaust Pipe, GM Muffler. Choosing OEM parts is the optimal decision for guaranteeing superior quality and perfect performance. These components undergo stringent quality checks and are carefully constructed to comply with GM's factory specifications, ensuring a smooth installation process.

ChevyPartsGiant.com is a leading supplier of genuine GM parts such as GM 15798954 Muffler. Our website boasts an extensive inventory of OEM GM parts, available at highly competitive prices in the market. Should you require any new genuine GM parts, rest assured we will deliver them swiftly and efficiently to your doorstep. Furthermore, all our parts come with the assurance of a manufacturer's warranty. For detailed Chevy parts information, click here.
Choose ChevyPartsGiant for discounted prices, exceptional service and fast delivery