CADILLAC CT6 Catalytic converter replacement Cost
2016–2023 · Engine, Fuel & Emissions system
Typical range
$690–$11.4k
Parts + labour
Labour hours
1–6h
At a typical garage
The catalytic converter reduces harmful exhaust gases by converting them to less toxic compounds. A failing cat triggers a P0420 check engine light, may produce a sulphur smell and can reduce engine power. CADILLAC CT6 catalytic converter replacement costs $690–$11430—one of the more expensive emission-related repairs.
Typical parts included
- Catalytic converter
What affects the price
- OEM vs direct-fit aftermarket vs universal (OEM recommended for emissions compliance)
- Whether the vehicle has multiple catalytic converters (common on V6/V8)
- Whether upstream oxygen sensors need replacing at the same time
Common questions
How long does this repair take?
Catalytic converter replacement on a CADILLAC CT6 typically takes 1–6 hours at a garage.
How often does this need to be done?
For a CADILLAC CT6, this is typically needed catalytic converters are replaced on failure; typical lifespan is 100,000–150,000 miles with good maintenance.
Other engine, fuel & emissions system repairs on the CADILLAC CT6
- ABS hydraulic unit replacement$425–$765
- ABS sensor replacement$175–$315
- ABS system bleeding$140–$252
- AC compressor clutch replacement$350–$630
- AC compressor replacement$375–$675
Catalytic converter replacement cost on similar cars
- BMW 5 Series Sedan$385–$693
- AUDI A8$385–$693
- MERCEDES BENZ S-Klasse and predecessors$385–$693
- MASERATI Ghibli$385–$693
- BENTLEY Continental GT$490–$882
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