How to replace the muffler on 6.0L, 6.6L, and 8.1L engines on Chevrolet Silverado 3500 Classic?

Begin by raising and supporting the vehicle and removing the spare tire to replace the Muffler on 6.0l, 6.6l, and 8.1l engines while installing adjustable jack stands under the rear axle. To replace the Muffler on vehicles with an 8.6 or 9.5 inch ring gear you must disconnect the rear axle vent hose with its swivel clip from the rear brake crossover pipe. When working on a ring gear that measures 10.5 inches keep the same procedures in mind. Begin by taking off the lower nuts and bolts from the rear shock absorbers before possibly dropping the rear axle. 6.0l and 8.1l vehicles require you to remove their exhaust Muffler nuts and loosen the Exhaust Pipe clamp. Helpful assistance will be needed to support the exhaust Muffler while you must loosen the catalytic converter coupling nuts for 6.6l engines. For 6.0l or 8.1l engines remove insulators from frame hangers and move the Muffler backwards to separate from the catalytic converter and recover the insulators from the Muffler hangers. To remove the exhaust manifold pipe gasket carefully pry up the catalytic converter coupling clip using a small flat-blade screwdriver to release the locator button. Slide the Muffler rearward until full disengagement is reached before removing the insulators from the frame hangers for 6.6l engines and the exhaust Muffler gasket if needed. A new band clamp requires installation when the Muffler operates as a standalone component. Mark the existing clamp position, remove its weld with grinding until completely separated then install the new clamp. When installing the Muffler on 6.0l or 8.1l engines, reposition the original Oxygen Sensor with gm p/n 12377953 anti-seize compound and tighten its mounting bolts until they reach 42 nm (31 ft. Lbs.). To install the Muffler on 6.6l engines position the Muffler locator button directly across from the catalytic converter coupling groove and push the Muffler in place until it fits properly into the coupling clip. Cut four strips of dielectric grease to coat the Muffler hangers and frame hangers. Next apply a new exhaust Muffler gasket and an exhaust manifold pipe gasket before installing them into position. Assisted by another person, push the Muffler so it meets the catalytic converter. Torque the catalytic converter coupling nuts to 45 nm (33 ft-lbs) after you set their initial torque tightness values. Position the new band clamp on the intermediate Exhaust Pipe using alignment reference points on 6.0l or 8.1l engines while actively avoiding positioning the bolt underneath the pipe. Following this, install exhaust Muffler nuts before tightening the Exhaust Pipe clamp bolt to 44 nm (33 ft. Lbs.). Use an axle lift to raise the rear axle then install lower bolts and nuts on shock absorbers until they reach 95 nm (70 ft. Lbs. Torque). Reinstall the vent hose of the rear axle and link the swivel clip to the brake crossover pipe if required. After doing this you can remove adjustable jack stands. Carefully install the spare tire before lowering your vehicle.

OEM Chevrolet Silverado 3500 Classic Muffler

Exhaust Muffler

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23 Mufflers found

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Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798957
$942.56 MSRP: $1402.65
You Save: $460.09 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Replaces: 15147365, 15103204
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798961
$1071.28 MSRP: $1595.91
You Save: $524.63 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798946
$1007.38 MSRP: $1500.27
You Save: $492.89 (33%)
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 19420118
$1051.07 MSRP: $1565.88
You Save: $514.81 (33%)
Product Specifications
- Other Name: Muffler Assembly, Exhaust (W/Exhaust & T/Pipe & 3Way Catalytic Converter) "Kit"; Exhaust Pipe; Muffler, Exhaust
- Replaces: 15147368, 15076107, 15199841, 15798960, 15113085
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15798947
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Exhaust Pipe; Muffler; Muffler, Exhaust
- Replaces: 15147352
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15229357
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Exhaust; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15229351
Product Specifications
- Other Name: Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15798941
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 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15229353
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/ Exhaust Pipe & Tail Pipe); Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15229352
Product Specifications
- Other Name: Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798942
Product Specifications
- Other Name: Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15229355
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 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15229356
Product Specifications
- Other Name: Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15229358
Product Specifications
- Other Name: Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.6 L DIESEL
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15798952
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Exhaust Pipe; Muffler; Muffler, Exhaust
- Replaces: 15113070
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798953
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Replaces: 15757990
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler & Pipe
Part Number: 15798949
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Exhaust Pipe; Muffler; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798951
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Replaces: 15077789, 15757987
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798954
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Replaces: 15147362, 15113073
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 8.1 L GAS
View related parts
Chevrolet Silverado 3500 Classic Muffler
Part Number: 15798948
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Exhaust & Tail Pipe & 3W; Muffler, Exhaust
- Replaces: 15077763, 15077779, 15147353, 15103189, 15113063
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Silverado 3500 Classic | LS, LT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS

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1-20 of 23 Results

Chevrolet Silverado 3500 Classic Muffler

Our website offers an extensive catalog of genuine Chevrolet Silverado 3500 Classic Muffler at unbeatable prices. Every OEM Chevrolet Silverado 3500 Classic Muffler comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Silverado 3500 Classic Muffler Parts Questions & Experts Answers

Muffler
15798961
Q: How to replace the muffler on 6.0L, 6.6L, and 8.1L engines on Chevrolet Silverado 3500 Classic?
A: Begin by raising and supporting the vehicle and removing the spare tire to replace the Muffler on 6.0l, 6.6l, and 8.1l engines while installing adjustable jack stands under the rear axle. To replace the Muffler on vehicles with an 8.6 or 9.5 inch ring gear you must disconnect the rear axle vent hose with its swivel clip from the rear brake crossover pipe. When working on a ring gear that measures 10.5 inches keep the same procedures in mind. Begin by taking off the lower nuts and bolts from the rear Shock Absorbers before possibly dropping the rear axle. 6.0l and 8.1l vehicles require you to remove their exhaust Muffler nuts and loosen the Exhaust Pipe clamp. Helpful assistance will be needed to support the exhaust Muffler while you must loosen the catalytic converter coupling nuts for 6.6l engines. For 6.0l or 8.1l engines remove insulators from frame hangers and move the Muffler backwards to separate from the catalytic converter and recover the insulators from the Muffler hangers. To remove the exhaust manifold pipe gasket carefully pry up the catalytic converter coupling clip using a small flat-blade screwdriver to release the locator button. Slide the Muffler rearward until full disengagement is reached before removing the insulators from the frame hangers for 6.6l engines and the exhaust Muffler gasket if needed. A new band clamp requires installation when the Muffler operates as a standalone component. Mark the existing clamp position, remove its weld with grinding until completely separated then install the new clamp. When installing the Muffler on 6.0l or 8.1l engines, reposition the original Oxygen Sensor with gm p/n 12377953 anti-seize compound and tighten its mounting bolts until they reach 42 nm (31 ft. Lbs.). To install the Muffler on 6.6l engines position the Muffler locator button directly across from the catalytic converter coupling groove and push the Muffler in place until it fits properly into the coupling clip. Cut four strips of dielectric grease to coat the Muffler hangers and frame hangers. Next apply a new exhaust Muffler gasket and an exhaust manifold pipe gasket before installing them into position. Assisted by another person, push the Muffler so it meets the catalytic converter. Torque the catalytic converter coupling nuts to 45 nm (33 ft-lbs) after you set their initial torque tightness values. Position the new band clamp on the intermediate Exhaust Pipe using alignment reference points on 6.0l or 8.1l engines while actively avoiding positioning the bolt underneath the pipe. Following this, install exhaust Muffler nuts before tightening the Exhaust Pipe clamp bolt to 44 nm (33 ft. Lbs.). Use an axle lift to raise the rear axle then install lower bolts and nuts on shock absorbers until they reach 95 nm (70 ft. Lbs. Torque). Reinstall the vent hose of the rear axle and link the swivel clip to the brake crossover pipe if required. After doing this you can remove adjustable jack stands. Carefully install the spare tire before lowering your vehicle.