Make sure this part fits

GM 15798946
Muffler

2001-2007 GM

Customer Questions & Expert Answers (8)
GM 15798946 Muffler
  • Part Description
    Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W
  • Manufacturer
    General Motors
Make sure this part fits
$1007.38 MSRP: $1500.27
You Save: $492.89 (33%)
Core Charge: $400.00
Currently Unavailable

Due to manufacturer supply shortage, this item isn't currently available for ordering.

  • Vehicle Fitment

    Year Make Model Trim Engine
    2003-2004 Chevrolet Silverado 1500LS, LT, SS8 Cyl 6.0 L GAS
    2001-2003 Chevrolet Silverado 1500 HDLS, LT8 Cyl 6.0 L GAS
    2001-2004 Chevrolet Silverado 2500Base, LS, LT, WT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2001-2006 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
    2001-2006 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
    2001-2004 GMC Sierra 1500Base, C3, Denali, SLE, SLT, WT8 Cyl 6.0 L GAS
    2001-2003 GMC Sierra 1500 HDSLE, SLT8 Cyl 6.0 L GAS
    2001-2004 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
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    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 15798946 designed for my car? Posted by ChevyPartsDeal Specialist
    A:
    Please Select Your Vehicle model to see if part number 15798946 is suitable before ordering.
    Posted by ChevyPartsDeal Specialist
    Q:
    What is the first step to replace the muffler on 4.3L, 4.8L, and 5.3L engines for the 2004 Chevrolet Silverado 1500? Posted by Customer
    A:
    First, raise and suitably support the vehicle.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Muffler
    Q:
    How should the old oxygen sensor be re-installed for 6.0L or 8.1L engines for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Apply anti-seize compound GM P/N 12377953 to its threads and tighten it to 42 Nm (31 ft. lbs.).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Muffler
    Q:
    What is the torque specification for the exhaust manifold pipe nuts for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Tighten them to 50 Nm (39 ft. lbs.).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Exhaust Pipe
    Q:
    What is the next step for removing the exhaust manifold pipe for the 2004 Chevrolet Silverado 2500? Posted by Customer
    A:
    Remove the exhaust manifold pipe for 6.0L or 8.1L engines, discarding the exhaust manifold pipe seal, and repeat for 6.6L engines.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Exhaust Pipe
    Q:
    What should be done before installing the new muffler for the 2004 GMC Sierra 1500? Posted by Customer
    A:
    Again, apply lubricant to the exhaust insulators to assist with the process.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Muffler
    Q:
    What is the first step to replace the exhaust manifold pipe on a 6.0L Cab/Chassis for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Remove the heated oxygen sensor (HO2S) and support the transmission with a suitable transmission jack.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Exhaust Pipe
    Q:
    What if the exhaust manifold pipe was not replaced for the 2005 GMC Sierra 3500? Posted by Customer
    A:
    Reconnect the oxygen sensor electrical connector, CPA retainer, and clip.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this 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 15798946 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 15798946 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 15798946 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 15798946 maintains top performance when functioning as the Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W unit. The component 15798946 is constructed from durable material and its dimensions span 144.9 x 45.5 x 23.1 inches while weighing 161.60 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 15798946 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.
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