How to service and repair the catalytic converter on GMC Savana 3500?

The first step to work on a Catalytic Converter requires the placement of safety stands beneath the raised vehicle. Start by taking out the transmission rear support and removing the electrical connection for the Oxygen Sensor (02S). Take off the exhaust manifold pipe nuts and their corresponding seals. The Muffler front flange nuts need removal when servicing the 4.3l and 5.0l models with a 135 inch wheelbase. Maintenance on the exhaust system for 5.7l and 7.4l with 135 inch wheelbase requires loosening the front Muffler clamp then removing the front exhaust flange retaining nuts and gasket. The 4.3l and 5.0l with a 155-inch wheelbase as well as the 6.5l diesel require removal of the converter assembly's rear flange nuts. Lubricate the clamp near the Muffler front then remove the flange retaining nuts and gasket from both the exhaust and Muffler flange. Owners of the 5.7l and 7.4l cutaway and rv must remove exhaust flange retaining nuts and gasket from the Muffler's front flange. The exhaust hangers must be removed before removing the Catalytic Converter and its attached oxygen sensors from the vehicle. Install the required oxygen sensors first and apply gm p/n 9985020 sealer or equivalent product to slip joint fittings during installation. Place the front Muffler pipe's Catalytic Converter assembly where it belongs after also installing needed exhaust hangers. When installing the exhaust flange retaining nuts and gasket on 5.7l, 7.4l cutaway, and rv models you must perform this task without applying any torque to the nuts. The installation process requires performing this sequence again for the 5.7l and 7.4l with 155 inch and 135 inch wheelbases alongside the 4.3l and 5.0l with 155 inch and 6.5l diesel at the converter assembly end while avoiding any nut tightening. The new seal and exhaust pipe flange should be installed onto exhaust manifold studs following torque settings of 65 nm (48 ft. Lbs.) on the exhaust pipe flange to exhaust manifold nuts. Verify exhaust system alignment then tighten all exhaust pipe clamps to 70 nm (52 ft. Lbs.) while setting the exhaust flange retaining nuts to the Muffler at 48 nm (35 ft. Lbs.). After connecting the Oxygen Sensor (02S) electrical connection you need to reinstall the transmission support and must check the exhaust system to ensure all components are properly aligned before removing safety stands to lower the vehicle.

How to replace the catalytic converter on a single exhaust system (4.3L, 4.8L, and 5.3L) on GMC Savana 3500?

To replace a single exhaust system Catalytic Converter on 4.3l 4.8l and 5.3l vehicles start by lifting the vehicle and disconnecting ho2s electrical connections from the Catalytic Converter pipe. First remove the exhaust hanger bolts and hanger from the transmission before removing the nuts and seals which secure the Catalytic Converter pipe to the exhaust manifolds. Always follow recommended safety precautions throughout this process. Start by taking out the Catalytic Converter from the vehicle after removing the flange nuts which join the catalytic pipe to the Muffler. When required you should disconnect oxygen sensors. Position the catalytic pipe first then mount retaining nuts to the Muffler's front section but leave these nuts loose for now. Starting from the Exhaust Manifold, insert the new seals and nut bolts and flange into position while tightening Exhaust Manifold nuts to 65 n.m and Catalytic Converter-muffler retaining nuts to 48 n.m. Before installation, connect the ho2s electrical connections then use the transmission to mount the exhaust hanger and fasten its bolts with 17 n.m (13 lb ft) torque. Verify the exhaust system's alignment against all components before lowering the vehicle to complete the installation.

OEM GMC Savana 3500 Catalytic Converter

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45 Catalytic Converters found

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GMC Savana 3500 Catalytic Converter, Passenger Side Part Number: 15853441
$2035.70 MSRP: $3211.55
You Save: $1175.85 (37%)
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 GMC Savana 3500 | 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
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GMC Savana 3500 Catalytic Converter, Driver Side Part Number: 15853440
$2128.35 MSRP: $3412.13
You Save: $1283.78 (38%)
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 GMC Savana 3500 | 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
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GMC Savana 3500 Catalytic Converter Part Number: 19418962
$2115.35 MSRP: $3248.47
You Save: $1133.12 (35%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 25839216, 20953444
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 GMC Savana 3500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX
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GMC Savana 3500 Converter & Pipe, Passenger Side Part Number: 15853443
$2023.47 MSRP: $3153.47
You Save: $1130.00 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Catalytic Converter; Exhaust Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Savana 3500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L GAS
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GMC Savana 3500 Catalytic Converter Part Number: 85577179
$778.30 MSRP: $1258.78
You Save: $480.48 (39%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Replaced by: 85720945
- Replaces: 85166835, 84854615
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Savana 3500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
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GMC Savana 3500 Catalytic Converter Part Number: 19418954
$2198.25 MSRP: $3288.07
You Save: $1089.82 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 15853438, 20858260, 25758568, 15120812
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2010 GMC Savana 3500 | 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 Savana 3500 Catalytic Converter Part Number: 19420297
$1953.09 MSRP: $3201.58
You Save: $1248.49 (39%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, Warm Up 3Way Catalytic (W/ Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter
- Replaces: 23269390, 25943820
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2020 GMC Savana 3500 | 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 Savana 3500 Catalytic Converter, Passenger Side Part Number: 19420106
$1992.93 MSRP: $3818.25
You Save: $1825.32 (48%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Replaces: 15853439, 20858261
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2010 GMC Savana 3500 | 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 Savana 3500 Catalytic Converter Part Number: 15747730
$1635.64 MSRP: $2443.30
You Save: $807.66 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 GMC Savana 3500 | Base, SLE, SLT
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GMC Savana 3500 Catalytic Converter Part Number: 19420268
$1694.06 MSRP: $2598.92
You Save: $904.86 (35%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, Oxidation Catalytic; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 22768282, 22893734, 22743692, 84451334
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 GMC Savana 3500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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GMC Savana 3500 Catalytic Converter Part Number: 15120814
$1837.24 MSRP: $2746.00
You Save: $908.76 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2010 GMC Savana 3500 | 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
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GMC Savana 3500 Converter & Pipe, Driver Side Part Number: 15853442
$968.42 MSRP: $1441.47
You Save: $473.05 (33%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Catalytic Converter; Exhaust Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Savana 3500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L GAS
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GMC Savana 3500 Catalytic Converter Part Number: 85593477
$1812.15 MSRP: $2708.33
You Save: $896.18 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Replaces: 19420306, 84296974
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 GMC Savana 3500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS
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GMC Savana 3500 Catalytic Converter Part Number: 84398056
$939.23 MSRP: $1403.97
You Save: $464.74 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-Nitrogen Oxide Catalytic (W/Exhaust Pipe); Converter, Catalytic Converter
- Replaces: 84100801
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2020 GMC Savana 3500 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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GMC Savana 3500 Catalytic Converter, Driver Side Part Number: 19418963
$2126.52 MSRP: $3180.37
You Save: $1053.85 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, Catalytic (W/ Exhaust Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 15853437, 25921611, 25758569
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2010 GMC Savana 3500 | 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
View related parts
GMC Savana 3500 Catalytic Converter Part Number: 15084243
$1306.40 MSRP: $1948.94
You Save: $642.54 (33%)
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 GMC Savana 3500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L GAS
View related parts
GMC Savana 3500 Catalytic Converter Part Number: 15053997
Product Specifications
- Other Name: Converter; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 GMC Savana 3500 | Base, SLT
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GMC Savana 3500 Catalytic Converter, Driver Side Part Number: 15058469
Product Specifications
- Other Name: Converter; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Savana 3500 | Base, SLT | 8 Cyl 6.5 L DIESEL
View related parts
GMC Savana 3500 Catalytic Converter Part Number: 15070531
Product Specifications
- Other Name: Converter; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 GMC Savana 3500 | Base, SLT
View related parts
GMC Savana 3500 Catalytic Converter Part Number: 15747731
Product Specifications
- Other Name: Converter; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 GMC Savana 3500 | Base, SLE

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GMC Savana 3500 Catalytic Converter

Want to cut long-term maintenance and repair costs? Choose OEM Catalytic Converter. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine GMC Savana 3500 parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM GMC Savana 3500 Catalytic Converter 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 Savana 3500 Catalytic Converter Parts and Q&A

Catalytic Converter
15747731
Q: How to service and repair the catalytic converter on GMC Savana 3500?
A:
The first step to work on a Catalytic Converter requires the placement of safety stands beneath the raised vehicle. Start by taking out the transmission rear support and removing the electrical connection for the Oxygen Sensor (02S). Take off the exhaust manifold pipe nuts and their corresponding seals. The Muffler front flange nuts need removal when servicing the 4.3l and 5.0l models with a 135 inch wheelbase. Maintenance on the exhaust system for 5.7l and 7.4l with 135 inch wheelbase requires loosening the front Muffler clamp then removing the front exhaust flange retaining nuts and gasket. The 4.3l and 5.0l with a 155-inch wheelbase as well as the 6.5l diesel require removal of the converter assembly's rear flange nuts. Lubricate the clamp near the Muffler front then remove the flange retaining nuts and gasket from both the exhaust and Muffler flange. Owners of the 5.7l and 7.4l cutaway and rv must remove exhaust flange retaining nuts and gasket from the Muffler's front flange. The Exhaust Hangers must be removed before removing the Catalytic Converter and its attached oxygen sensors from the vehicle. Install the required oxygen sensors first and apply gm p/n 9985020 sealer or equivalent product to slip joint fittings during installation. Place the front Muffler pipe's Catalytic Converter assembly where it belongs after also installing needed exhaust hangers. When installing the exhaust flange retaining nuts and gasket on 5.7l, 7.4l cutaway, and rv models you must perform this task without applying any torque to the nuts. The installation process requires performing this sequence again for the 5.7l and 7.4l with 155 inch and 135 inch wheelbases alongside the 4.3l and 5.0l with 155 inch and 6.5l diesel at the converter assembly end while avoiding any nut tightening. The new seal and exhaust pipe flange should be installed onto exhaust manifold studs following torque settings of 65 nm (48 ft. Lbs.) on the exhaust pipe flange to exhaust manifold nuts. Verify exhaust system alignment then tighten all exhaust pipe clamps to 70 nm (52 ft. Lbs.) while setting the exhaust flange retaining nuts to the Muffler at 48 nm (35 ft. Lbs.). After connecting the Oxygen Sensor (02S) electrical connection you need to reinstall the transmission support and must check the exhaust system to ensure all components are properly aligned before removing safety stands to lower the vehicle.
Catalytic Converter, Passenger Side
15853441
Q: How to replace the catalytic converter on a single exhaust system (4.3L, 4.8L, and 5.3L) on GMC Savana 3500?
A:
To replace a single exhaust system Catalytic Converter on 4.3l 4.8l and 5.3l vehicles start by lifting the vehicle and disconnecting ho2s electrical connections from the Catalytic Converter pipe. First remove the exhaust hanger bolts and hanger from the transmission before removing the nuts and seals which secure the Catalytic Converter pipe to the Exhaust Manifolds. Always follow recommended safety precautions throughout this process. Start by taking out the Catalytic Converter from the vehicle after removing the flange nuts which join the catalytic pipe to the Muffler. When required you should disconnect Oxygen Sensors. Position the catalytic pipe first then mount retaining nuts to the Muffler's front section but leave these nuts loose for now. Starting from the Exhaust Manifold, insert the new seals and nut bolts and flange into position while tightening Exhaust Manifold nuts to 65 n.m and Catalytic Converter-muffler retaining nuts to 48 n.m. Before installation, connect the ho2s electrical connections then use the transmission to mount the exhaust hanger and fasten its bolts with 17 n.m (13 lb ft) torque. Verify the exhaust system's alignment against all components before lowering the vehicle to complete the installation.