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 Tahoe Catalytic Converter

Cat. Converter

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29 Catalytic Converters found

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Chevrolet Tahoe 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:
- 2018-2020 Chevrolet Tahoe | 1500 4 DOOR UTILITY | 8 Cyl 6.2L
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Chevrolet Tahoe CONVERTER ASM,3WAY CTLTC(W/EXH PIPE)
Part Number: 19420288
$1838.28 MSRP: $2760.00
You Save: $921.72 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 23486656
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2020 Chevrolet Tahoe | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Tahoe CONVERTER ASM,W/UP 3WAY CTLTC (W/ EXH PIPE)
Part Number: 19420276
$1834.97 MSRP: $2755.00
You Save: $920.03 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 20757674
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 Chevrolet Tahoe | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Tahoe 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 Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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Chevrolet Tahoe CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85542368
$1267.30 MSRP: $1979.40
You Save: $712.10 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaced by: 86781749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2023 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 5.3L
View related parts
Chevrolet Tahoe 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 Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Tahoe 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:
- 2001-2005 Chevrolet Tahoe | 4 DOOR 1/2 TON
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Chevrolet Tahoe CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 86781749
$1320.74 MSRP: $1979.40
You Save: $658.66 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 84557805, 84520354, 19420299, 84655074, 85542368
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 5.3L
View related parts
Chevrolet Tahoe 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 Tahoe | 4 DOOR 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Tahoe 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:
- 2009-2014 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L Flex
View related parts
Chevrolet Tahoe 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:
- 2009-2014 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L Flex
View related parts
Chevrolet Tahoe 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:
- 2001-2005 Chevrolet Tahoe | 4 DOOR 1/2 TON
View related parts
Chevrolet Tahoe CONVERTER ASM-NOX CTLTC (W/ FLTR)
Part Number: 40009042
$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:
- 2021-2022 Chevrolet Tahoe | 4 DOOR 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Tahoe CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85542367
$1018.72 MSRP: $1523.87
You Save: $505.15 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2022-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Tahoe 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 Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex
View related parts
Chevrolet Tahoe CONVERTER ASM-NOX CTLTC (W/ FLTR)
Part Number: 40009139
$835.65 MSRP: $1247.73
You Save: $412.08 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Diesel Particulate Filter
- Replaces: 12696443, 12709334, 12700216, 12698485, 12694479, 40009042
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Tahoe CONVERTER ASM-NOX CTLTC (W/ EXH PIPE)
Part Number: 85521780
$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
- Replaces: 84749006
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Tahoe 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 Tahoe | 4 DOOR 1/2 TON | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex
View related parts
Chevrolet Tahoe CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85558398
$129.40 MSRP: $194.30
You Save: $64.90 (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:
- 2023-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Tahoe CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85558399
$140.50 MSRP: $210.97
You Save: $70.47 (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:
- 2023-2024 Chevrolet Tahoe | 4 DOOR 1/2 TON | 8 Cyl 6.2L

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1-20 of 29 Results

Chevrolet Tahoe Catalytic Converter

Chevrolet Tahoe Catalytic Converter is an exhaust system component that has a big role to play in controlling the emissions to vehicles before they are released to the environment. This component is required to function efficiently at high temperatures normally over 800 degrees F to enhance conversion efficiently. Since Tahoe cars adopted catalytic converters, there have been various types: the first one converting only CO and HC through the two-way converter and the cones of which converted both CO and HC as well as NO x through the three-way converter. Even though catalytic converters are designed to last the duration of the vehicle's life, they can also fail to function in various ways including causing the vehicle to misfire, lose power, or spew out more emissions and therefore require to be replaced to obey clean-air laws. New catalytic converters may not be cheap and could be in the range on average. Altogether, it is possible to define the Chevrolet Tahoe Catalytic Converter as the essential part, which plays a crucial role in decreasing dangerous emissions and preserving the environment.

Each OEM Chevrolet Tahoe 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 Tahoe Catalytic Converter Parts Questions & Experts Answers

3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
25904628
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.