Automatic Transmission
DEXRON-ULV Automatic Transmission Fluid (GM Part No. 19352619, in Canada 19352620).
Applies to: Automatic Transmission
Owner’s manual specs
2020 Cadillac CT6 Specs: Oil Capacity, Fluids, Maintenance Schedule & Fuse Box
Figures for the 2020 Cadillac CT6, copied from Cadillac’s own owner’s manual. Every one links to the manual page it came from.
From the manufacturer’s manuals. Every figure here is copied from the manufacturer's own manual, with a link to the page it came from. Where a manual is unclear or contradicts itself, we leave the figure out.
Engines in this manual: 3.6L V6, 4.2L V8. Figures that differ by engine say which engine they are for.
Fluids & capacities
All engines
Engine Coolant
50/50 mixture of clean drinkable water and use only DEX-COOL Coolant.
Applies to: Engine Coolant
3.6L V6
Engine Cooling System*
10.4 qt
9.8 L
Applies to: 3.6L V6 Engine
Engine Cooling System*
12 qt
11.4 L
Applies to: 3.6L V6 Engine with Rear A/C
Engine Oil (3.6L V6 Engine)
Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil 0 277.
Applies to: Engine Oil (3.6L V6 Engine)
Engine Oil with Filter
6 qt
5.7 L
Applies to: 3.6L V6 Engine · with filter
4.2L V8
Engine Cooling System*
11.8 qt
11.2 L
Applies to: 4.2L V8 Engine
Engine Cooling System*
13.6 qt
12.9 L
Applies to: 4.2L V8 Engine with Rear A/C
Engine Cooling System*
2.8 qt
2.7 L
Applies to: 4.2L V8 Engine Intercoolers
Engine Oil (4.2L V8 Twin Turbo Engine)
Engine oil meeting the dexos2 specification of the proper SAE viscosity grade. ACDelco dexos2 is recommended. See Engine Oil 0 277.
Applies to: Engine Oil (4.2L V8 Twin Turbo Engine)
Engine Oil with Filter
9 qt
8.5 L
Applies to: 4.2L V8 Engine · with filter
Maintenance schedule
Normal service schedule
Use this for ordinary driving.
| Service | When |
|---|---|
| Replace passenger compartment air filter. (2) | Every 22,500 mi(36,000 km) |
Severe service schedule
Use this if you tow, idle a lot, drive short trips in the cold, or run in dust.
| Service | When |
|---|---|
| Change automatic transmission fluid and filter. | Every 45,000 mi(72,000 km) |
| Replace passenger compartment air filter. (2) | Every 22,500 mi(36,000 km) |
Oil life & reset procedures
Engine oil life system reset
Before you start
- Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change.
Steps
- Using the DIC buttons, display REMAINING OIL LIFE on the DIC. See Driver Information Center (DIC) 0 132.
- Press and hold SEL to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%.
You’ll know it worked: If the CHANGE ENGINE OIL SOON message is not on, the system is reset.
Use of the incorrect automatic transmission fluid may damage the vehicle, and the damage may not be covered by the vehicle warranty.
Fuse box locations & fuse chart
Instrument Panel Fuse Block
Where to find it
Instrument Panel Fuse Block The instrument panel fuse block is behind the driver side instrument panel storage compartment.
pressure to the two retaining tabs on the sides of the compartment, until the two retaining tabs clear the sides of the instrument panel.
Rear Compartment Fuse Block
Where to find it
Rear Compartment Fuse Block The rear compartment fuse block is behind a cover on the passenger side.