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 Suburban Catalytic Converter

Cat. Converter

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52 Catalytic Converters found

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Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
Part Number: 23486656
$1838.28 MSRP: $2760.00
You Save: $921.72 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic(W/Exhaust Pipe); Catalytic Converter, Converter & Pipe
- Replaced by: 19420288
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2020 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 25904628
$1326.54 MSRP: $2996.63
You Save: $1670.09 (56%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaced by: 19418939
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 20854453
$1724.85 MSRP: $2690.39
You Save: $965.54 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaced by: 19418926
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 20757674
$1834.97 MSRP: $2755.00
You Save: $920.03 (34%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaced by: 19420276
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC(W/EXH PIPE)
Part Number: 19420265
$2022.57 MSRP: $3037.97
You Save: $1015.40 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 23111625, 84362281
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2020 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 6.2L
View related parts
Chevrolet Suburban Converter Assembly, 3Way Ctltc(W/Exh Pipe)
Part Number: 84769824
$1376.51 MSRP: $2063.53
You Save: $687.02 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Suburban | 1/2 TON | 8 Cyl 6.2L
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Chevrolet Suburban 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 Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Suburban 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: 20854454, 15905948
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Suburban 3-Way Catalytic Convertor Assembly (W/ Exhaust Manifold Pipe)
Part Number: 19208464
$992.35 MSRP: $1484.08
You Save: $491.73 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Asm,3Way Catalytic (W/ Exhaust Manifold Pipe); Catalytic Converter, Converter & Pipe
- Replaced by: 19420098
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
View related parts
Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 10395213
$946.55 MSRP: $1415.00
You Save: $468.45 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe, Front Pipe
- Replaced by: 19420124
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 Chevrolet Suburban | 1/2 TON, 1500 EXTENDED CAB STANDARD BOX, 4 DOOR 1/2 TON, CLASSIC 1500 EXTENDED CAB STANDARD BOX, EXT 1/2 TON, XL 1/2 TON, YUKON/DENALI | 8 Cyl 6.0L
View related parts
Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 10395214
$1230.70 MSRP: $1843.58
You Save: $612.88 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe, Front Pipe
- Replaced by: 19420109
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 Chevrolet Suburban | 1/2 TON, 1500 EXTENDED CAB STANDARD BOX, 4 DOOR 1/2 TON, CLASSIC 1500 EXTENDED CAB STANDARD BOX, EXT 1/2 TON, XL 1/2 TON, YUKON/DENALI | 8 Cyl 6.0L
View related parts
Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
Part Number: 84655074
$1320.74 MSRP: $1979.40
You Save: $658.66 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Ctltc(W/Exh Pipe); Catalytic Converter
- Replaced by: 86781749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L
View related parts
Chevrolet Suburban Converter Assembly, Nox Ctltc (W/ Fltr)
Part Number: 12709334
$835.65 MSRP: $1247.73
You Save: $412.08 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 40009139
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Suburban | 1/2 TON
View related parts
Chevrolet Suburban Converter Assembly, 3Way Catalytic(W/Exhaust Pipe)
Part Number: 84048985
$2206.44 MSRP: $5358.04
You Save: $3151.60 (59%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Ctltc(W/Exh Pipe); Catalytic Converter
- Replaces: 23383016
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2019 Chevrolet Suburban | 3500 4 DOOR UTILITY | 8 Cyl 6.0L Flex
View related parts
Chevrolet Suburban 3Way Catalytic Convertor (W/Exhaust Manifold Pipe)
Part Number: 15746547
$1829.79 MSRP: $2747.21
You Save: $917.42 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter,3Way Catalytic(W/Exhaust Manifold Pipe); Converter
- Replaced by: 19420113
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.7L
View related parts
Chevrolet Suburban Converter Assembly, Nox Ctltc (W/ Exh Pipe)
Part Number: 84749006
$212.64 MSRP: $306.67
You Save: $94.03 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaced by: 85521780
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Suburban | 1/2 TON
View related parts
Chevrolet Suburban 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 Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15092758
$1040.25 MSRP: $1556.33
You Save: $516.08 (34%)
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Suburban | 3/4 TON | 8 Cyl 6.0L
View related parts
Chevrolet Suburban 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 20854455
$1726.51 MSRP: $2591.41
You Save: $864.90 (34%)
Ships in 1-3 Business Days
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter
- Replaced by: 19420119
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Chevrolet Suburban | 3/4 TON | 8 Cyl 6.0L, 8 Cyl 6.0L Flex
View related parts
Chevrolet Suburban 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: 15246489, 15052911, 15076459, 15756279, 10395212, 19206638, 15082124, 15076458, 15036169, 15756278
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Suburban | 1/2 TON, 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 4 DOOR 1/2 TON, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, EXT 1/2 TON, XL 1/2 TON, YUKON/DENALI | 8 Cyl 5.3L, 8 Cyl 5.3L Flex

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1-20 of 52 Results

Chevrolet Suburban 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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