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GM 15798956
Muffler

2001-2007 GM

Customer Questions & Expert Answers (10)
GM 15798956 Muffler
  • Part Description
    Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W
  • Replaces
    15147364, 15199833, 15070412, 15113075
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Vehicle Fitment

    Year Make Model Trim Engine
    2001-2002 Chevrolet Silverado 1500 HDLS, LT8 Cyl 6.0 L GAS
    2001-2002 Chevrolet Silverado 2500Base, LS, LT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2005-2006, 2001-2002 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
    2005-2006, 2001-2002 Chevrolet Silverado 3500Base, LS, LT, WT8 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
    2001-2002 GMC Sierra 1500C3, Denali8 Cyl 6.0 L GAS
    2001-2002 GMC Sierra 1500 HDSLE, SLT8 Cyl 6.0 L GAS
    2001-2002 GMC Sierra 2500Base, SL, SLE, SLT8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
    2005-2006, 2001-2002 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
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    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 15798956 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 15798956 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the procedure if the muffler is not being replaced as an assembly for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Replace the band clamp by marking its position on the intermediate exhaust pipe, grinding the weld to remove it, and installing a new band clamp.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What steps should be performed for a 10.5 inch ring gear for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Perform the same steps as for the 8.6 or 9.5 inch ring gear.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What are the torque specifications for the exhaust muffler nuts or exhaust pipe clamp for the 2007 Chevrolet Silverado 3500 Classic? Posted by Customer
    A:
    Tighten the exhaust muffler nuts to 40 Nm (30 ft. lbs.) or install a new exhaust pipe clamp and tighten to 44 Nm (33 ft. lbs.).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the next step after positioning the exhaust pipe to the turbocharger for the 2006 Chevrolet Silverado 3500? Posted by Customer
    A:
    Position the exhaust pipe with a NEW gasket to the exhaust manifold, aligning the tab to face outward, and loosely install the bolts.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What should be done after installing the exhaust manifold pipe for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Reinstall any necessary exhaust muffler insulators, then raise the transmission slightly with the jack.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What is the next step after addressing the vent hose for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Remove the lower bolts and nuts of the rear shock absorber, 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 after supporting the transmission for the 2005 GMC Sierra 3500? Posted by Customer
    A:
    Remove the transmission mount to transmission support nuts, raise the transmission off the support, and take out the transmission support crossmember bolts and the crossmember itself.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Pipe
    Q:
    What should be done for the 6.6L engine regarding the exhaust muffler for the 2005 GMC Sierra 3500? Posted by Customer
    A:
    Remove the exhaust muffler nuts and support the muffler.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Muffler
    Q:
    What should be done during the installation of the new muffler assembly for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Lubricate the 4 insulators again, position and install the muffler assembly with assistance, and reinstall the insulators (1-4).
    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 15798956 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 15798956 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 15798956 Muffler fits certain Chevrolet Silverado 2500 HD, Silverado 2500, Silverado 3500 models, as well as GMC Sierra 1500, Sierra 2500 HD, Sierra 2500 models.
The original GM component designated by manufacturer part number 15798956 maintains top performance when functioning as the Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W unit. The component 15798956 is constructed from durable material and its dimensions span 136.5 x 32.3 x 17.3 inches while weighing 75.20 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Muffler, Exhaust. The part 15798956 has available replacement options 15147364, 15199833, 15070412, 15113075. 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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