< Back ×
My Vehicle Change Vehicle
2011 GMC Sierra 1500
< Back to View All
Exhaust Manifolds, Pipes & Mufflers
- Department
- Prices
OEM (Genuine) 2011 GMC Sierra 1500 Converter & Pipe
PartNumber: 20854453
Product Specifications- Notes: 4.3 Liter; 1/2 Ton, Federal, 4.8 & 5.3 Liter; Nt7 & Nua Emissions
- Other Names: Catalytic Converter, Converter & Pipe
- Item Dimensions: 51.2 x 29.9 x 14.2 inches
- Item Weight: 35.50 Pounds
- Fitment Type: Direct Replacement
- Replaced by: 19418926
- Part Description: 2011 GMC Sierra 1500 Converter & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.0 L ELECTRIC/GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
$1724.84 MSRP:$2690.39You Save: $965.55 (36%)
OEM (Genuine) 2011 GMC Sierra 1500 Catalytic Converter
PartNumber: 20854454
Product Specifications- Notes: Silverado, Sierra; 4.3L, 4.8L, 5.3L, 6.0L; Federal
- Other Names: Catalytic Converter
- Item Dimensions: 45.3 x 29.9 x 14.4 inches
- Item Weight: 37.40 Pounds
- Replaced by: 19418941
- Part Description: 2011 GMC Sierra 1500 Catalytic Converter
Vehicle Fitment- 2011 GMC Sierra 1500 | Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.0 L GAS
$2125.29 MSRP:$3192.92You Save: $1067.63 (34%)
OEM (Genuine) 2011 GMC Sierra 1500 Converter & Pipe
PartNumber: 22940415
Product Specifications- Notes: Silverado, Sierra; 6.2L; California; 1/2 Ton, California, 6.2 Liter
- Other Names: Catalytic Converter, Converter & Pipe
- Item Dimensions: 52.0 x 29.9 x 13.4 inches
- Item Weight: 40.80 Pounds
- Fitment Type: Direct Replacement
- Replaces: 15905949
- Part Description: 2011 GMC Sierra 1500 Converter & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.2 L FLEX
$2490.53 MSRP:$4366.67You Save: $1876.14 (43%)
OEM (Genuine) 2011 GMC Sierra 1500 Catalytic Converter
PartNumber: 15896591
Product Specifications- Notes: Silverado, Sierra; 6.2L; Federal
- Other Names: Catalytic Converter
- Item Dimensions: 47.2 x 32.9 x 16.5 inches
- Item Weight: 34.30 Pounds
- Replaced by: 19419599
- Part Description: 2011 GMC Sierra 1500 Catalytic Converter
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.2 L FLEX
$1741.18 MSRP:$2613.56You Save: $872.38 (34%)OEM (Genuine) 2011 GMC Sierra 1500 Converter & Pipe
PartNumber: 19418941Product Specifications- Notes: Silverado, Sierra; 4.3L, 4.8L, 5.3L, 6.0L; Federal; 1/2 Ton, California, 4.8 & 5.3 Liter; Nu5 & Nt4 Emissions
- Other Names: Catalytic Converter, Converter & Pipe
- Fitment Type: Direct Replacement
- Replaces: 20854454, 15905948
- Part Description: 2011 GMC Sierra 1500 Converter & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.0 L ELECTRIC/GAS, 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L FLEX
$2125.29 MSRP:$3192.92You Save: $1067.63 (34%)
OEM (Genuine) 2011 GMC Sierra 1500 Converter & Pipe
PartNumber: 19419599
Product Specifications- Notes: Silverado, Sierra; 6.2L; Federal; 1/2 Ton, Federal, 6.2 Liter
- Other Names: Catalytic Converter, Converter & Pipe
- Fitment Type: Direct Replacement
- Replaces: 15896591
- Part Description: 2011 GMC Sierra 1500 Converter & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, Hybrid, SL, SLE, SLT, WT, XFE | 8 Cyl 4.8 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 6.0 L ELECTRIC/FLEX, 8 Cyl 6.2 L FLEX
$1741.18 MSRP:$2613.56You Save: $872.38 (34%)
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 22818061
Product Specifications- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 135.5 x 26.6 x 15.2 inches
- Item Weight: 77.80 Pounds
- Fitment Type: Direct Replacement
- Replaces: 20932936
- Part Description: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L ELECTRIC/FLEX
$499.79 MSRP:$754.00You Save: $254.21 (34%)
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920632
Product Specifications- Notes: Silverado, Sierra; 4.8L; Crew Cab; 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 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) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920636Product Specifications- Notes: 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | SLE, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920635Product Specifications- Notes: Silverado, Sierra; 5.3L; W/Flex Fuel; 133.0"; 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | SLE, SLT, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2011 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 20920637Product Specifications- Notes: Silverado, Sierra; 5.3L; W/Flex Fuel; 143.5" 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: 2011 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2011 GMC Sierra 1500 | SL, SLE, SLT, WT, XFE | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 22812180Product Specifications- Notes: Silverado, Sierra; 6.2L; All; 1/2 Ton, Crew Cab, 6.2 Liter;1/2 Ton, Ext Cab, 6.2 Liter
- Other Names: Muffler, Muffler & Pipe
- Item Dimensions: 135.3 x 27.5 x 15.0 inches
- Item Weight: 67.60 Pounds
- Fitment Type: Direct Replacement
- Replaces: 25832562
- Part Description: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | Denali, SLE, SLT | 8 Cyl 6.2 L FLEX
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20920631Product Specifications- Notes: Silverado, Sierra; 4.8L; 119" Wheelbase; 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 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) 2011 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust Pipe & Tail Pipe)
PartNumber: 20920633Product Specifications- Notes: Silverado, Sierra; 4.8L; 133.0" 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: 2011 GMC Sierra 1500 Muffler Asm-Exhaust (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2011 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) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20959692Product Specifications- Notes: Silverado, Sierra; 5.3L; W/Flex Fuel; 157.5"; 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | SL, SLE, SLT, WT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
OEM (Genuine) 2011 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: 2011 GMC Sierra 1500 Exhaust Muffler Assembly (W/ Exhaust Pipe & Tail Pipe)
Vehicle Fitment- 2011 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20952773Product Specifications- Notes: 4.3 Liter, Ext Cab, 6.5 Ft Box; Silverado, Sierra; 4.3L; 143.5" 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | SLE, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS
OEM (Genuine) 2011 GMC Sierra 1500 Muffler & Pipe
PartNumber: 20952772Product Specifications- Notes: 4.3 Liter, Std Cab, 8 Ft Box; Silverado, Sierra; 4.3L; 133" 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: 2011 GMC Sierra 1500 Muffler & Pipe
Vehicle Fitment- 2011 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS
FAQ for Exhaust Pipe Repair
Q: How do you ensure that the pipe flares remain fully seated to each other while clamping?
A:
To ensure that the pipe flares remain fully seated while clamping you must do the following: Remove and discard the exhaust band clamp, install and position a new exhaust band clamp to the pipe joint, firmly push and maintain the pipes together while tightening, confirm that the clamp edges are fully seated on the pipe, run the engine and inspect the clamp to ensure no leaks.
By Omar
GM Specialist
03/12/2020Q: How do you fix a muffler buzz?
A:
Raise and support the vehicle, mark the position of the heat shield and straps, cut and remove the heat shield straps, position the heat shield to the muffler and install new heat shield straps on the muffler shell in the positions marked, position the strap screw heads and cut off excess strap material.
By Bob
GM Specialist
03/12/2020Q: What causes an exhaust leak or noise?
A:
This may be caused due to an unseated pipe to pipe mid-joint.
By Omar
GM Specialist
02/12/2020Q: What causes the Pinging/popping/snapping noise from the exhaust system?
A:
The pinging/popping/snapping noise is due to the exhaust system cooling down and is normal for this exhaust system.
By Omar
GM Specialist
02/12/2020