What is a catalytic converter and how do you diagnose and repair it?

A catalytic converter is an emission control device that reduces certain pollutants. There are two types of converters: an oxidation catalyst that reduces hydrocarbons and carbon monoxide, and a reduction catalyst that reduces oxides of nitrogen. Vehicles are equipped with two three-way catalysts that can reduce all three pollutants. Whenever you raise the vehicle to service underbody components, inspect the converter for leaks, corrosion, dents, and other damage. The easiest way to check for a restricted converter is to use a vacuum gauge to diagnose the effect of a blocked exhaust on the intake vacuum. To remove the converter, raise the vehicle and place it securely on jack stands, disconnect the electrical connectors for the upstream and downstream oxygen sensors, remove all four sensors, remove the nuts at each of the upper flanges that secure the front exhaust pipe assembly to the exhaust manifold flanges, remove the nuts that secure the rear flange of the front exhaust pipe assembly to the rest of the exhaust system, and remove the front exhaust pipe assembly. To install the converter, coat the threads of the nuts and bolts with an anti-seize compound to facilitate future removal and tighten the nuts that secure the front exhaust pipe assembly to the exhaust manifold and to the rest of the exhaust system securely.

Genuine Chevrolet Avalanche Catalytic Converter

Cat. Converter

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16 Catalytic Converters found

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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418939
$1326.54 MSRP: $2996.63
You Save: $1670.09 (56%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15127418, 25904628, 25824120
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418932
$2255.33 MSRP: $3389.03
You Save: $1133.70 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 25824121
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420124
$946.55 MSRP: $1415.00
You Save: $468.45 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe, Front Pipe
- Replaces: 15754088, 15755463, 10395213
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Chevrolet Avalanche | 1/2 TON
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418941
$2125.30 MSRP: $3192.92
You Save: $1067.62 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15905948, 20854454
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2013 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418926
$1724.85 MSRP: $2690.39
You Save: $965.54 (36%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15896590, 20854453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2013 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420109
$1230.70 MSRP: $1843.58
You Save: $612.88 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe, Front Pipe
- Replaces: 10395214, 15755464, 15754087
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Chevrolet Avalanche | 1/2 TON
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Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420098
$992.35 MSRP: $1484.08
You Save: $491.73 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15782486, 19208464
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
View related parts
Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418955
$2049.82 MSRP: $3218.12
You Save: $1168.30 (37%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 25904630
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Avalanche CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418928
$1813.97 MSRP: $2723.32
You Save: $909.35 (34%)
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15036169, 15076458, 15756278, 10395212, 15052911, 15076459, 15756279, 15246489, 15082124, 19206638
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P*Marked Print *Marked Print
Part Number: 15070466
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P*Marked Print; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
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Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15199818
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P
- Replaces: 15077754
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15793201
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Front Pipe
- Replaces: 15135147
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15793200
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Front Pipe
- Replaces: 15135148
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15077752
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe, Front Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15077751
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe, Front Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche 3Way Catalytic Convertor (W/Exhaust Manifold Pipe)
Part Number: 15079086
Product Specifications
- Other Name: Converter,3Way Catalytic(W/Exhaust Manifold Pipe); Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L

Chevrolet Avalanche Catalytic Converter

That part in Chevrolet avalanche known as the Catalytic Converter is a vital organ in the emission system in that it takes dangerous products of combustion such as Carbon Monoxide, Hydrocarbons, and Oxides of Nitrogen and transmute it to safer products inclusive of water, Carbon Dioxide, and Nitrogen. It has admixed metals such as platinum, palladium, and rhodium; these are metals that encourage a chemical change to occur without undergoing any change. Many kinds of Catalytic Converters have been employed in the past, and in today's vehicles, a honeycomb core for catalyst Gas interaction is employed. Still the current converters pose some challenges such as poisoning of the converters' catalyst or even theft because these are made from precious metals but recent improvements have been done to minimize the exhaust restrictiveness and also increase its efficiency. Being the main reason why Catalytic Converters have a significant responsibility of helping in protection of the environment, and ensuring that we conform to the standards set concerning emission of noxious gases.

Each OEM Chevrolet Avalanche Catalytic Converter we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Avalanche Catalytic Converter Parts Questions & Experts Answers

3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
20854453
Q: What is a catalytic converter and how do you diagnose and repair it?
A: A catalytic converter is an emission control device that reduces certain pollutants. There are two types of converters: an oxidation catalyst that reduces hydrocarbons and carbon monoxide, and a reduction catalyst that reduces oxides of nitrogen. Vehicles are equipped with two three-way catalysts that can reduce all three pollutants. Whenever you raise the vehicle to service underbody components, inspect the converter for leaks, corrosion, dents, and other damage. The easiest way to check for a restricted converter is to use a vacuum gauge to diagnose the effect of a blocked exhaust on the intake vacuum. To remove the converter, raise the vehicle and place it securely on jack stands, disconnect the electrical connectors for the upstream and downstream Oxygen Sensors, remove all four sensors, remove the nuts at each of the upper flanges that secure the front exhaust pipe assembly to the exhaust manifold flanges, remove the nuts that secure the rear flange of the front exhaust pipe assembly to the rest of the exhaust system, and remove the front exhaust pipe assembly. To install the converter, coat the threads of the nuts and bolts with an anti-seize compound to facilitate future removal and tighten the nuts that secure the front exhaust pipe assembly to the exhaust manifold and to the rest of the exhaust system securely.

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