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2009 GMC Sierra 1500
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Exhaust Manifolds, Pipes & Mufflers
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OEM (Genuine) 2009 GMC Sierra 1500 Muffler
PartNumber: 15798961
Product Specifications- Notes: Silverado, Sierra; 6.0L; 1 Ton; W/O Rear Handling
- Other Names: Muffler
- Item Weight: 57.70 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 GMC Sierra 1500 Muffler
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, SLT | 8 Cyl 6.0 L GAS
$1024.26 MSRP:$1532.23You Save: $507.97 (34%)
Walker® Quiet Flow Stainless Steel Oval Bare Exhaust Muffler for 2009 GMC Sierra 1500
PartNumber: 21684Product Specifications- Notes: Premium - Limited Lifetime Warranty
- Body Height: 6.000
- Body Length: 25.000
- Body Material: Stainless Steel
- Body Width: 11.500
- Exhaust Component Mount Type: No Mounts
- Finish: Aluminized
- Grade Type: Regular
- Inlet 1 Inside Diameter: 3.000
- Inlet 1 Type: Pipe Connection
- Inlet Configuration: Offset
- Inlet Offset: 3.5
- Internet Product Code (IPC): BA13F4B6FD2
- Item has MSDS (SDS): N
- Max Year Covered: 2010
- MFG Brand Name: Walker Exhaust
- MFG Model # (Series): 21684
- MFG Name: Tenneco, Inc
- Min Year Covered: 2007
- Most Popular Make / Model: GMC Yukon
- Most Popular Year: 2007
- Muffler Body Height: 6.0
- Muffler Body Length: 25.0
- Muffler Body Material: Stainless Steel
- Muffler Body Width: 11.5
- Muffler Color / Finish: Bare
- Muffler Inlet: Offset
- Muffler Inlet Connection Type: Pipe Connection
- Muffler Inlet Count: 1
- Muffler Inlet Diameter (in): 3.0
- Muffler Inlet Diameter 2 (in): 0.0
- Muffler Inlet Diameter Designation: Inside Diameter
- Muffler Outlet: Offset
- Muffler Outlet Connection Type: Pipe Connection
- Muffler Outlet Count: 1
- Muffler Outlet Diameter (in): 3.0
- Muffler Outlet Diameter Designation: Inside Diameter
- Muffler Overall Length: 30.0
- Muffler Reversible: No
- Muffler Shape: Oval
- Outlet 1 Inside Diameter: 3.000
- Outlet Configuration: Offset
- Overall Length: 30.000
- Product Grade: Economy
- Reversible: No
- Shape: Oval
- Supplier Company Name: Tenneco, Inc
- Total Part VIO: 306480
- Universal Or Specific Fit: Specific
- UPC: 086387216845
- Part Description: 2009 GMC Sierra 1500 Quiet Flow Stainless Steel Oval Bare Exhaust Muffler
Vehicle Fitment- 2009 GMC Sierra 1500 | All Trims | 8 Cyl 6.2L
$108.22
Walker® Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler for 2009 GMC Sierra 1500
PartNumber: 21577Product Specifications- Notes: Premium - Limited Lifetime Warranty; If welded Assy, replace all Reqd parts.
- Body Height: 7.000
- Body Length: 24.000
- Body Material: Stainless Steel
- Body Width: 9.000
- Exhaust Component Mount Type: No Mounts
- Finish: Aluminized
- Grade Type: Regular
- Inlet 1 Inside Diameter: 3.000
- Inlet 1 Type: Pipe Connection
- Inlet Configuration: Offset
- Inlet Offset: 1.625
- Internet Product Code (IPC): 0533148E1C9
- Item has MSDS (SDS): N
- Max Year Covered: 2013
- MFG Brand Name: Walker Exhaust
- MFG Model # (Series): 21577
- MFG Name: Tenneco, Inc
- Min Year Covered: 2007
- Most Popular Make / Model: Chevrolet Silverado 1500
- Most Popular Year: 2007
- Muffler Body Height: 7.0
- Muffler Body Length: 24.0
- Muffler Body Material: Stainless Steel
- Muffler Body Width: 9.0
- Muffler Color / Finish: Bare
- Muffler Inlet: Offset
- Muffler Inlet Connection Type: Pipe Connection
- Muffler Inlet Count: 1
- Muffler Inlet Diameter (in): 3.0
- Muffler Inlet Diameter 2 (in): 0.0
- Muffler Inlet Diameter Designation: Inside Diameter
- Muffler Outlet: Offset
- Muffler Outlet Connection Type: Pipe Connection
- Muffler Outlet Count: 1
- Muffler Outlet Diameter (in): 2.75
- Muffler Outlet Diameter Designation: Outside Diameter
- Muffler Overall Length: 29.0
- Muffler Reversible: No
- Muffler Shape: Oval
- Outlet 1 Outside Diameter: 2.750
- Outlet Configuration: Offset
- Overall Length: 29.000
- Product Grade: Economy
- Reversible: No
- Shape: Oval
- Supplier Company Name: Tenneco, Inc
- Total Part VIO: 2963434
- Universal Or Specific Fit: Specific
- UPC: 086387215770
- Part Description: 2009 GMC Sierra 1500 Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler
Vehicle Fitment- 2009 GMC Sierra 1500 | All Trims | 8 Cyl 4.8L
- 2009 GMC Sierra 1500 | All Trims | 8 Cyl 5.3L
- 2009 GMC Sierra 1500 | All Trims | All Engines
$83.09
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20779916
Product Specifications- Notes: Silverado, Sierra Hybrid
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 141.5 x 25.7 x 16.7 inches
- Item Weight: 300.40 Pounds
- Fitment Type: Direct Replacement
- Replaces: 25940551
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L ELECTRIC/GAS
$410.39 MSRP:$619.12You Save: $208.73 (34%)
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920632
Product Specifications- Notes: 1/2 Ton, Crew Cab, 4.8 Liter;1/2 Ton, Ext Cab, 4.8L W/6.5 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 124.0 x 33.3 x 15.4 inches
- Item Weight: 53.10 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20779902, 25940536, 25940544
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SL, SLE, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920636Product Specifications- Notes: Silverado, Sierra; 5.3L; W/O Flex Fuel; 119" Wheelbase; 1/2 Ton, Std Cab, 5.3L W/6.5 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 100.6 x 32.7 x 15.2 inches
- Item Weight: 245.20 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20779898, 25940531
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920635Product Specifications- Notes: Silverado, Sierra; 5.3L; W/Flex Fuel; 143.5" Wheelbase;Silverado, Sierra; 5.3L; W/O Flex Fuel; 143.5" Wheelbase; 1/2 Ton, Ext Cab, 5.3L W/5.9 Ft Box;1/2 Ton, Std Cab, 5.3L W/8 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 114.9 x 32.0 x 15.1 inches
- Item Weight: 280.00 Pounds
- Fitment Type: Direct Replacement
- Replaces: 19258691, 20779904, 25940537, 25940538
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, SLT, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 20920637Product Specifications- Notes: Silverado, Sierra; 5.3L; W/Flex Fuel; 133.9" Wheelbase;Silverado, Sierra; 5.3L; W/O Flex Fuel; 133.9" Wheelbase;Silverado, Sierra; 5.3L; W/O Flex Fuel; 157.5" Wheelbase; 1/2 Ton, Crew Cab, 5.3 Liter;1/2 Ton, Ext Cab, 5.3L W/6.5 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 129.4 x 33.0 x 15.1 inches
- Item Weight: 281.30 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20898762, 25940543
- Part Description: 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2009 GMC Sierra 1500 | SL, SLE, SLT, WT, XFE | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 25929101
Product Specifications- Notes: Silverado, Sierra; 6.0L; 1/2 Ton
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 109.7 x 31.0 x 18.0 inches
- Item Weight: 288.00 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, SLT | 8 Cyl 6.0 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20757530
Product Specifications- Notes: Silverado, Sierra; 6.2L; 119" Wheelbase
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 132.9 x 25.8 x 15.1 inches
- Item Weight: 243.90 Pounds
- Fitment Type: Direct Replacement
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.2 L FLEX
OEM (Genuine) 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust & T/Pipe & 3W
PartNumber: 15798960Product Specifications- Notes: Silverado, Sierra; 6.0L; 1 Ton; W/Rear Handling
- Other Names: Muffler
- Item Dimensions: 120.8 x 20.6 x 10.2 inches
- Item Weight: 56.00 Pounds
- Replaced by: 19420118
- Part Description: 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust & T/Pipe & 3W
Vehicle Fitment- 2009 GMC Sierra 1500 | C3, Denali, SLE, SLT | 8 Cyl 6.0 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 MUFFLER ASM, EXH(W/EXH & T/PIPE & 3WAY CTLTC CONV)"KIT"
PartNumber: 19420118Product Specifications- Notes: Silverado, Sierra; 6.0L; 1 Ton; W/Rear Handling
- Other Names: Muffler
- Fitment Type: Direct Replacement
- Replaces: 15076107, 15113085, 15147368, 15199841, 15798960
- Part Description: 2009 GMC Sierra 1500 MUFFLER ASM, EXH(W/EXH & T/PIPE & 3WAY CTLTC CONV)"KIT"
Vehicle Fitment- 2009 GMC Sierra 1500 | C3, Denali, SLE, SLT | 8 Cyl 6.0 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920631Product Specifications- Notes: 1/2 Ton, Std Cab, 4.8L W/6.5 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 103.2 x 33.0 x 15.5 inches
- Item Weight: 244.50 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20779900, 25940533
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 20920633Product Specifications- Notes: Silverado, Sierra; 4.8L; 143.5" Wheelbase; 1/2 Ton, Std Cab, 4.8L W/8 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 116.8 x 33.3 x 15.2 inches
- Item Weight: 271.70 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20779905, 20898059, 25940540, 19258693
- Part Description: 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Resonator, Exhaust & Tail Pipe
PartNumber: 25904822Product Specifications- Notes: 1/2 Ton, Crew Cab, 6.2 Liter
- Other Names: Muffler & Pipe
- Item Dimensions: 142.4 x 27.0 x 16.2 inches
- Item Weight: 74.30 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20757528, 25800608
- Part Description: 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Resonator, Exhaust & Tail Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 25940550Product Specifications- Notes: 1/2 Ton, Ext Cab, 6.0 Liter
- Other Names: Muffler & Pipe
- Item Dimensions: 129.4 x 25.5 x 15.6 inches
- Item Weight: 235.70 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20898060
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, SLT | 8 Cyl 6.0 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20959692Product Specifications- Notes: 1/2 Ton, Ext Cab, 5.3L W/8 Ft Box
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 142.6 x 33.0 x 16.3 inches
- Item Weight: 351.80 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20779906, 25940541
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SL, SLE, SLT, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 20952771
Product Specifications- Notes: 4.3 Liter, Std Cab, 6.5 Ft Box; Silverado, Sierra; 4.3L; 119" Wheelbase
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 101.6 x 32.5 x 14.8 inches
- Item Weight: 36.10 Pounds
- Fitment Type: Direct Replacement
- Replaces: 25940532, 20779899
- Part Description: 2009 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2009 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20952773Product Specifications- Notes: 4.3 Liter, Ext Cab, 6.5 Ft Box; 1/2 Ton, Ext Cab, 4.8L W/5.9 Ft Box; Silverado, Sierra; 4.8L; 119" Wheelbase
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 124.3 x 32.1 x 15.2 inches
- Item Weight: 279.00 Pounds
- Fitment Type: Direct Replacement
- Replaces: 25947797, 20779901, 25940534, 25940530
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | SLE, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20952772Product Specifications- Notes: 4.3 Liter, Std Cab, 8 Ft Box; Silverado, Sierra; 4.3L; 143.5" Wheelbase
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 118.3 x 33.2 x 14.6 inches
- Item Weight: 40.60 Pounds
- Fitment Type: Direct Replacement
- Replaces: 25940529, 25940539, 19258692
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler & Pipe
PartNumber: 25940529Product Specifications- Notes: 4.3 Liter, Ext Cab, 5.9 Ft Box; Silverado, Sierra; 4.3L; 133" Wheelbase;Silverado, Sierra; 4.8L; 133.9" Wheelbase
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 117.2 x 33.5 x 15.4 inches
- Item Weight: 38.30 Pounds
- Fitment Type: Direct Replacement
- Replaced by: 20952772
- Part Description: 2009 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Resonator, Exhaust & Tail Pipe
PartNumber: 25940549Product Specifications- Notes: 1/2 Ton, Crew Cab, 6.0 Liter
- Other Names: Muffler & Pipe
- Item Dimensions: 134.1 x 26.2 x 15.6 inches
- Item Weight: 244.30 Pounds
- Replaces: 20898761
- Part Description: 2009 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Resonator, Exhaust & Tail Pipe
Vehicle Fitment- 2009 GMC Sierra 1500 | Hybrid, SLE, SLT | 8 Cyl 6.0 L ELECTRIC/GAS, 8 Cyl 6.0 L GAS
OEM (Genuine) 2009 GMC Sierra 1500 Muffler
PartNumber: 25810633Product Specifications- Notes: Silverado, Sierra; 6.2L; All
- Part Description: 2009 GMC Sierra 1500 Muffler
Vehicle Fitment- 2009 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.2 L FLEX
FAQ for Muffler Repair
Q: What is the recommended torque when installing the exhaust muffler to exhaust manifold pipe nuts?
A:
You can tighten it to 45 Nm (33 lb-ft).
By Bob
GM Specialist
01/11/2022Q: What is the recommended torque when installing the rear shock absorber lower bolts and nuts?
A:
You can tighten it to 95 Nm (70 lb-ft).
By Bob
GM Specialist
01/11/2022