How to replace the left side catalytic converter on GMC Acadia?

Before you can replace the left side catalytic converter, take off the heat shield for the exhaust manifold and loosen the catalytic converter to exhaust manifold nuts and the exhaust flexible pipe. After that, loosen the catalytic converter brace bolt and disconnect the catalytic converter from the exhaust manifold, disposing of the catalytic converter to exhaust manifold seal . For installation, put a new exhaust manifold seal on the catalytic converter and fasten it to the exhaust manifold. Make sure you put in the catalytic converter brace bolt and tighten it to 41 N.m (30 lb ft). Put the exhaust flexible pipe back in place and fasten the catalytic converter to the exhaust manifold nuts to 50 N.m (37 lb ft). In the end, attach the exhaust manifold heat shield.

How to replace a catalytic converter on GMC Sierra 1500?

The first step is to bring the car up and support it. If fitted unclipoaxygen sensor connection phase of floor reinforcement then disconnectoa Oxygen Sensor set of clips phase from the main clip. Remove the connectors position assurance (CPA), and the o2 sensor electrical connectors. Extract the oxygen sensors' electrical connectors from the hose clip and transmission crossmember and remove the cpa retainers and Oxygen Sensor electrical connectors (1, 2). Detach the left and the right exhaust manifold pipe nuts and then proceed with the exhaust Muffler nuts, remove the Catalytic Converter. As needed, remove the oxygen sensors. For installation, if required, install the oxygen sensors and apply the anti-seize compound gm p/n 12377953 or equivalent on threads and tighten them to 42 nm (31 lb ft). Mount the Catalytic Converter with the new exhaust manifold pipe seals to the exhaust manifolds, then hold the right and left exhaust manifold pipe nuts and tighten them to 50 nm (39 lb ft). Install the exhaust Muffler nuts and tighten with 40 nm (30 lb ft). Lift the harness so that the Oxygen Sensor electrical connectors (1, 2) and the cpa retainers are connected, then clip the electrical connectors of the oxygen sensors to the hose clip and the transmission crossmember. Connect the electrical connectors of Oxygen Sensor and retainers of cpa, install the clip around the engine harness and Oxygen Sensor pigtail, and connect the electrical connector of Oxygen Sensor. If installed, attach the Oxygen Sensor connection to the floor reinforcement before sinking the vehicle.

OEM GMC Catalytic Converter

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286 Catalytic Converters found

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GMC Catalytic Converter Part Number: 19419597
$925.07 MSRP: $1434.53
You Save: $509.46 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, Oxidation Catalytic (W/ Exhaust Manifold Pipe) "Kit"
- Replaces: 15283013
Fits the following GMC Models:
- Sierra 2500 HD | 2007-2010 | SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 2500 HD Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2007-2010 | SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
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GMC Catalytic Converter, Passenger Side Part Number: 15853441
$2164.43 MSRP: $3291.84
You Save: $1127.41 (35%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe
- Position: Passenger Side
Fits the following GMC Models:
- Savana 2500 | 2006-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2006-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
View related parts
GMC Catalytic Converter Part Number: 20910567
$1279.43 MSRP: $1908.45
You Save: $629.02 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Replaced by: 19433908
Fits the following GMC Models:
- Terrain | 2012-2014 | Denali, SLE, SLT | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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GMC Catalytic Converter, Passenger Side Part Number: 19420106
$1992.93 MSRP: $3913.70
You Save: $1920.77 (50%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe
- Position: Passenger Side
- Replaces: 15853439, 20858261
Fits the following GMC Models:
- Savana 2500 | 2003-2010 | Base, LS, LT, SLE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2003-2010 | Base, LS, LT, SLE | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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GMC Catalytic Converter Part Number: 19420293
$464.00 MSRP: $1458.54
You Save: $994.54 (69%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe); Converter & Pipe
- Replaced by: 86780903
Fits the following GMC Models:
- Canyon | 2015-2022 | Base, Elevation, Elevation Standard, SL, SLE, SLT | 4 Cyl 2.5 L GAS
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GMC Catalytic Converter Part Number: 19420269
$540.24 MSRP: $1048.85
You Save: $508.61 (49%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Replaced by: 85544903
Fits the following GMC Models:
- Canyon | 2017-2022 | AT4, All Terrain, Base, Denali, Elevation, Elevation Standard, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Catalytic Converter, Driver Side Part Number: 15853440
$2102.69 MSRP: $3497.43
You Save: $1394.74 (40%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe
- Position: Driver Side
Fits the following GMC Models:
- Savana 2500 | 2006-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2006-2010 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
View related parts
GMC Catalytic Converter Part Number: 25204794
$273.44 MSRP: $427.92
You Save: $154.48 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter
Fits the following GMC Models:
- Terrain | 2024-2025 | AT4, Denali, Elevation, SLE, SLT | 4 Cyl 1.5 L GAS
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GMC Exhaust Manifold Part Number: 19418950
$1732.02 MSRP: $2707.23
You Save: $975.21 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Manifold Assembly, Exhaust (W/ 3Way Catalytic Converter) "Kit"
- Replaces: 12607895, 12655846, 12604221
Fits the following GMC Models:
- Canyon | 2007-2012 | SLE, SLT, WT | 5 Cyl 3.7 L GAS
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GMC Catalytic Converter Part Number: 19420297
$2076.57 MSRP: $3281.62
You Save: $1205.05 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, Warm Up 3Way Catalytic (W/ Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter
- Replaces: 23269390, 25943820
Fits the following GMC Models:
- Savana 2500 | 2012-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
- Savana 3500 | 2012-2020 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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GMC Catalytic Converter Part Number: 19418968
$936.14
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"
- Replaces: 20906951
Fits the following GMC Models:
- Acadia | 2012-2016 | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Catalytic Converter Part Number: 19420249
$578.39 MSRP: $892.00
You Save: $313.61 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Front Manifold Pipe); Converter; Converter, Catalytic Converter
- Replaces: 20910496
Fits the following GMC Models:
- Terrain | 2012-2017 | Denali, SLE, SLT | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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GMC Catalytic Converter Part Number: 19418938
$652.36 MSRP: $971.28
You Save: $318.92 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"
- Replaces: 15903508
Fits the following GMC Models:
- Acadia | 2009-2011 | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Catalytic Converter, Passenger Side Part Number: 84131555
$755.91 MSRP: $1122.38
You Save: $366.47 (33%)
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Position: Passenger Side
- Replaces: 23386841
Fits the following GMC Models:
- Acadia | 2017 | Denali, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Converter & Pipe Part Number: 25782037
$983.52 MSRP: $1464.15
You Save: $480.63 (33%)
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Catalytic Converter; Exhaust Pipe
Fits the following GMC Models:
- Sierra 2500 HD | 2007-2008 | SLE, SLT, WT | 8 Cyl 6.0 L GAS
- Sierra 3500 HD | 2007-2008 | SLE, SLT, WT | 8 Cyl 6.0 L GAS
View related parts
GMC Catalytic Converter Part Number: 15229341
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
Fits the following GMC Models:
- Sierra 2500 HD | 2006-2007 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 2500 HD Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 | 2006 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 Classic | 2007 | SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
- Sierra 3500 HD | 2007 | SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
View More
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GMC Catalytic Converter Part Number: 15744810
Product Specifications
- Other Name: Converter, Exhaust Pipe
Fits the following GMC Models:
- Safari | 2001-2005 | Base, SL, SLE, SLT | 6 Cyl 4.3 L GAS
View related parts
GMC Catalytic Converter Part Number: 25887914
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe
- Replaces: 15892954
Fits the following GMC Models:
- Envoy | 2008-2009 | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Catalytic Converter Part Number: 25839176
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe
Fits the following GMC Models:
- Envoy | 2008-2009 | SLE, SLT | 6 Cyl 4.2 L GAS
View related parts
GMC Catalytic Converter, Passenger Side Part Number: 25844505
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe; Converter
- Position: Passenger Side
Fits the following GMC Models:
- Canyon | 2009-2012 | SLE, SLT | 8 Cyl 5.3 L GAS

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GMC Catalytic Converter

Choose OEM Catalytic Converter, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with GMC's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM GMC Catalytic Converter. You can shop at highly competitive prices and protect your budget. All our genuine GMC parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

GMC Catalytic Converter reduces the harmful exhaust gases which protect air quality and allow the engines to run freely. GMC trucks and SUVs are launched with robust boxed frames which scoff at heavy loads and unfriendly roads. Silent cabins keep the wind off the back, heated seats keep sore backs comfortable, and the smart MultiPro tailgate is folded into steps or folded flat to get weekend projects completed sooner. Surround vision and hitch guidance available give the trailer a clear perspective on the dashboard making it almost simple to back a trailer. Before any customer switches the key, long test cycles subject the chassis to gravel and heat to verify reliability. Having a history of over 1901, GMC continues to perfect the suspension tuning and powertrains to attain a balance between work strength and daily comfort. Drivers who choose this badge desire muscle which does not create a scene each morning and technology which does not become eye-catching but helpful. The precious metals including platinum, palladium, and rhodium found inside the Catalytic Converter cause a reaction to reverse carbon monoxide, hydrocarbons, and nitrogen oxides to cleaner water, nitrogen, and carbon dioxide. The three-way design that has been prevalent since the early eighties addresses all three pollutants simultaneously and eliminates the smog without constricting the flow. Performance versions are higher in cell density and have more streamlined housings to make exhaust rush out quicker, but the Catalytic Converter still manages to get the heat needed to remain active. Direct fit units are attached to the existing pipes and universal bodies are simple to cut and clamp, allowing the owner options in case of a repair or an upgrade.

GMC Catalytic Converter Parts and Q&A

Catalytic Converter, Driver Side
19420111
Q: How to replace the left side catalytic converter on GMC Acadia?
A:
Before you can replace the left side catalytic converter, take off the heat shield for the exhaust manifold and loosen the catalytic converter to exhaust manifold nuts and the exhaust flexible pipe. After that, loosen the catalytic converter brace bolt and disconnect the catalytic converter from the exhaust manifold, disposing of the catalytic converter to exhaust manifold seal . For installation, put a new exhaust manifold seal on the catalytic converter and fasten it to the exhaust manifold. Make sure you put in the catalytic converter brace bolt and tighten it to 41 N.m (30 lb ft). Put the exhaust flexible pipe back in place and fasten the catalytic converter to the exhaust manifold nuts to 50 N.m (37 lb ft). In the end, attach the exhaust manifold heat shield.
Catalytic Converter
19418928
Q: How to replace a catalytic converter on GMC Sierra 1500?
A:
The first step is to bring the car up and support it. If fitted unclipoaxygen sensor connection phase of floor reinforcement then disconnectoa Oxygen Sensor set of clips phase from the main clip. Remove the connectors position assurance (CPA), and the o2 sensor electrical connectors. Extract the oxygen sensors' electrical connectors from the hose clip and transmission crossmember and remove the cpa retainers and Oxygen Sensor electrical connectors (1, 2). Detach the left and the right exhaust manifold pipe nuts and then proceed with the exhaust Muffler nuts, remove the Catalytic Converter. As needed, remove the oxygen sensors. For installation, if required, install the oxygen sensors and apply the anti-seize compound gm p/n 12377953 or equivalent on threads and tighten them to 42 nm (31 lb ft). Mount the Catalytic Converter with the new exhaust manifold pipe seals to the exhaust manifolds, then hold the right and left exhaust manifold pipe nuts and tighten them to 50 nm (39 lb ft). Install the exhaust Muffler nuts and tighten with 40 nm (30 lb ft). Lift the harness so that the Oxygen Sensor electrical connectors (1, 2) and the cpa retainers are connected, then clip the electrical connectors of the oxygen sensors to the hose clip and the transmission crossmember. Connect the electrical connectors of Oxygen Sensor and retainers of cpa, install the clip around the engine harness and Oxygen Sensor pigtail, and connect the electrical connector of Oxygen Sensor. If installed, attach the Oxygen Sensor connection to the floor reinforcement before sinking the vehicle.