How to replace the muffler on GMC Envoy?

The Muffler can be replaced after lifting the vehicle. If there is any damage on the exhaust Muffler or front pipe, change the entire exhaust Muffler assembly. Pull the nuts off that secure the Muffler to the catalytic converter pipe and remove the Muffler/resonator from the insulators that keep it in place, and gently remove the Muffler from the vehicle. If there is damage at the rear of the exhaust Muffler, support the exhaust system, cut the Exhaust Pipe at the damaged points , take out the damaged Exhaust Pipe and resonator. To install it, when replacing the entire Muffler pipe assembly, proceed to carefully set the Muffler in place, and tighten the exhaust hangars to the insulators. Mount the Muffler on the catalytic converter pipe and bolt it down using nuts and tighten to 45 nm (33 ft. Lbs.). In case of installation of the exhaust aft of the Muffler, attach the exhaust to the insulators accordingly, attach the Exhaust Pipe to the Muffler and tighten the Exhaust Pipe clamp nuts to 50 nm (37 ft. Lbs.), removing the exhaust support. Lastly, check the exhaust system for leaks and underbody contact after lifting the vehicle.

OEM GMC Envoy Muffler

Exhaust Muffler

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

12 Mufflers found

View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25887916
$746.18 MSRP: $1120.61
You Save: $374.43 (34%)
Ships in 1-2 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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
View related parts
GMC Envoy Muffler Part Number: 15847573
$774.88 MSRP: $1163.72
You Save: $388.84 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25839185
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25839184
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25887919
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25839182
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 25839181
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler Part Number: 15847578
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 15847577
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Replaces: 15064263, 15185659, 15778682
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
View related parts
GMC Envoy Muffler Part Number: 15847574
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 15175774
Product Specifications
- Other Name: Muffler, Exhaust; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy Muffler W/Tpipe Part Number: 12479984
Product Specifications
- Other Name: Muffler, Exhaust; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS

GMC Envoy 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 Envoy parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM GMC Envoy 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 Envoy Muffler is one of the vital parts of the exhaust system well known for its quality and durability in most of the GMC Envoy models manufactured from 1998 to 2009. It is well designed to minimize the sound produced by the engine while at the same time stop toxic fumes from entering the cab of the vehicle and thus plays a critical role in increasing productivity as well as safety. Made out of heavy materials such as stainless steel or aluminized steel the GMC Envoy Muffler is available with direct bolt-on applications catering for both the first and second generation GMC Envoy line including the SLT, Envoy XL and the fully adventurous Envoy Denali. It is versatile and may be used for multiple functions making it unique for any GMC fanatic who wants to preserve the integrity of his or her auto. In addition to reducing noise, the Envoy Muffler offers a modification of exhaust flow that, when all is said and done, can enhance power and fuel economy. Also, it follows supreme noise and emission standards, amplifying the importance of safety being served by this invention to the environment. Due to its reliability on daily use as well as the performance aspect, the GMC Envoy Muffler prove to be of high quality and new in the market. Due to the GMC Envoy's effectiveness in noise control and its effect on the engine, it is essential to understand how an acoustic windshield can complement the vehicle's functionality so that drivers can get the optimal of both worlds when it comes to having a comfortable ride and the car's engineering.

GMC Envoy Muffler Parts and Q&A

Muffler W/Tpipe
15847577
Q: How to replace the muffler on GMC Envoy?
A:
The Muffler can be replaced after lifting the vehicle. If there is any damage on the exhaust Muffler or front pipe, change the entire exhaust Muffler assembly. Pull the nuts off that secure the Muffler to the catalytic converter pipe and remove the Muffler/resonator from the insulators that keep it in place, and gently remove the Muffler from the vehicle. If there is damage at the rear of the exhaust Muffler, support the exhaust system, cut the Exhaust Pipe at the damaged points , take out the damaged Exhaust Pipe and resonator. To install it, when replacing the entire Muffler pipe assembly, proceed to carefully set the Muffler in place, and tighten the exhaust hangars to the insulators. Mount the Muffler on the catalytic converter pipe and bolt it down using nuts and tighten to 45 nm (33 ft. Lbs.). In case of installation of the exhaust aft of the Muffler, attach the exhaust to the insulators accordingly, attach the Exhaust Pipe to the Muffler and tighten the Exhaust Pipe clamp nuts to 50 nm (37 ft. Lbs.), removing the exhaust support. Lastly, check the exhaust system for leaks and underbody contact after lifting the vehicle.