How to replace the exhaust muffler on a cab chassis with a 6.0L engine on GMC Sierra 1500?

To replace the exhaust Muffler on a vehicle with a cab chassis and 6.0l engine, first, raise and support the vehicle properly. Remove the spare tire if necessary and jack stands under the rear axle if necessary, but it is highly important at this point to rely on talk. In case the vehicle has an 8.6 or 9.5 inch ring gear, get rid of the rear axle vent hose as well as the vent hose swivel clip from the rear brake crossover pipe. Just do the same thing for the rear axle vent hose and clip if the vehicle has a 10.5 inch ring gear. Then, unbolt and remove the rear Shock Absorber if it needs to be done, then lower the rear axle using the adjustable jack stands. Remove the exhaust Muffler to exhaust manifold pipe nuts and partially loosen the exhaust Muffler clamp" remove the heated Oxygen Sensor (HO2S) and lubricate the 4 insulators where the hangers of the Muffler assembly should be inserted for easy removal. With a little help, remove the insulators (1-4) from the front, intermediate, and rear Muffler assembly hangers, as well as the Muffler assembly. For type installation one must lubricate the insulators again, mount the Muffler assembly and secure the insulators (1-4) onto the hangers. Replace the ho2s and be careful to follow fastener caution guidelines. Tighten the Muffler clamp (exhaust Muffler) to 47 nm (35 lb ft) and shake Muffler to Muffler personalize (exhaust manifold) pipe nuts to 45 nm (33 lb ft). On a different note, it will be wise to raise the rear axle using the adjustable jack stands if they are needed then install and tighten the nuts pressed on the rear Shock Absorber lower bolts to 95 nm (70 lb ft). If necessary, install the rear axle vent hose, connecting the vent hose swivel clip to the rear brake crossover pipe. Finally, be sure to remove the adjustable jack stands and use spare tire if necessary and lower the vehicle.

OEM GMC Sierra 1500 Muffler

Exhaust Muffler

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91 Mufflers found

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GMC Sierra 1500 Muffler & Pipe Part Number: 84665241
$638.82 MSRP: $959.38
You Save: $320.56 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85052296
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2018 GMC Sierra 1500 | Base, SLE | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Sierra 1500 Muffler & Pipe Part Number: 84657793
$623.20 MSRP: $935.92
You Save: $312.72 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85652521
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Sierra 1500 Muffler & Pipe Part Number: 20779916
$414.11 MSRP: $619.12
You Save: $205.01 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Replaces: 25940551
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV)
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84657796
$824.57 MSRP: $1238.35
You Save: $413.78 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85652520
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84657797
$839.89 MSRP: $1261.35
You Save: $421.46 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85652529
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, AT4X, Base, Denali, Denali Ultimate, Elevation, Pro, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Sierra 1500 Muffler & Pipe Part Number: 84797265
$806.04 MSRP: $1210.51
You Save: $404.47 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85653999
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, SLT | 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84657795
$448.08 MSRP: $672.93
You Save: $224.85 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84053745
$826.95 MSRP: $1241.92
You Save: $414.97 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85052295
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2018 GMC Sierra 1500 | Base, SLE | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 20757703
$922.41 MSRP: $1385.28
You Save: $462.87 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85052291
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2018 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84520060
$824.57 MSRP: $1238.35
You Save: $413.78 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler, Exhaust Pipe; Muffler
- Replaced by: 85652520
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2023 GMC Sierra 1500 | AT4, Denali, Elevation, SLE, SLT | 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84797264
$663.01 MSRP: $995.72
You Save: $332.71 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85653998
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, AT4X, Denali, Denali Ultimate, SLT | 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84665236
$922.41 MSRP: $1385.28
You Save: $462.87 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85052291
- Replaces: 23377842, 23487119, 84053744, 84327965, 20757703, 23219691, 84020522, 23239259
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2019 GMC Sierra 1500 | AT4, Base, Denali, Elevation, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84020524
$618.27 MSRP: $928.52
You Save: $310.25 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe); Muffler; Muffler, Exhaust; Exhaust Pipe
- Replaces: 23377844, 23487120, 20757704, 23219692
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2018 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 22818061
$502.06 MSRP: $754.00
You Save: $251.94 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Replaces: 20932936
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2013 GMC Sierra 1500 | Hybrid | 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV)
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84657794
$636.80 MSRP: $956.34
You Save: $319.54 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85652527
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84657792
$864.32 MSRP: $1298.04
You Save: $433.72 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Replaced by: 85652523
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | AT4, Base, Denali, Elevation, Pro, SLE, SLT | 6 Cyl 4.3 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84144451
$709.01 MSRP: $1064.80
You Save: $355.79 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2023 GMC Sierra 1500 | Base, Elevation, Pro, SLE | 4 Cyl 2.7 L GAS
View related parts
GMC Sierra 1500 Mirror Assembly, Passenger Side Part Number: 84308120
$1494.80 MSRP: $2244.90
You Save: $750.10 (34%)
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Mirror; Muffler & Pipe
- Position: Passenger Side
- Replaces: 23377854, 84012772, 23219682, 23239251
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2018 GMC Sierra 1500 | Denali, SLT | 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 84020523
$826.95 MSRP: $1241.92
You Save: $414.97 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly, Exhaust (W/ Exhaust Pipe); Muffler; Muffler, Exhaust; Exhaust Pipe
- Replaced by: 85052295
- Replaces: 20757701, 23377843, 23487117, 23219685, 23239260
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2018 GMC Sierra 1500 | Base, Denali, SLE, SLT | 6 Cyl 4.3 L FLEX, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 5.3 L MILD HYBRID EV-GAS (MHEV), 8 Cyl 6.2 L GAS
View related parts
GMC Sierra 1500 Muffler & Pipe Part Number: 25828814
$832.28 MSRP: $1249.92
You Save: $417.64 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler, Exhaust; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Sierra 1500 | WT | 6 Cyl 4.3 L GAS

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GMC Sierra 1500 Muffler

Want to cut long-term maintenance and repair costs? Choose OEM Muffler. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine GMC Sierra 1500 parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM GMC Sierra 1500 Muffler includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

GMC Sierra 1500 Muffler Parts Questions & Experts Answers

Muffler
15798961
Q: How to replace the exhaust muffler on a cab chassis with a 6.0L engine on GMC Sierra 1500?
A:
To replace the exhaust Muffler on a vehicle with a cab chassis and 6.0l engine, first, raise and support the vehicle properly. Remove the spare tire if necessary and jack stands under the rear axle if necessary, but it is highly important at this point to rely on talk. In case the vehicle has an 8.6 or 9.5 inch ring gear, get rid of the rear axle vent hose as well as the vent hose swivel clip from the rear brake crossover pipe. Just do the same thing for the rear axle vent hose and clip if the vehicle has a 10.5 inch ring gear. Then, unbolt and remove the rear Shock Absorber if it needs to be done, then lower the rear axle using the adjustable jack stands. Remove the exhaust Muffler to exhaust manifold pipe nuts and partially loosen the exhaust Muffler clamp" remove the heated Oxygen Sensor (HO2S) and lubricate the 4 insulators where the hangers of the Muffler assembly should be inserted for easy removal. With a little help, remove the insulators (1-4) from the front, intermediate, and rear Muffler assembly hangers, as well as the Muffler assembly. For type installation one must lubricate the insulators again, mount the Muffler assembly and secure the insulators (1-4) onto the hangers. Replace the ho2s and be careful to follow fastener caution guidelines. Tighten the Muffler clamp (exhaust Muffler) to 47 nm (35 lb ft) and shake Muffler to Muffler personalize (exhaust manifold) pipe nuts to 45 nm (33 lb ft). On a different note, it will be wise to raise the rear axle using the adjustable jack stands if they are needed then install and tighten the nuts pressed on the rear Shock Absorber lower bolts to 95 nm (70 lb ft). If necessary, install the rear axle vent hose, connecting the vent hose swivel clip to the rear brake crossover pipe. Finally, be sure to remove the adjustable jack stands and use spare tire if necessary and lower the vehicle.