2021 CADILLAC CT5 Owner's Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
392 SERVICE AND MAINTENANCE
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be
obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON ULV Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See
Cooling System 0322.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade.
ACDelco dexos1 full synthetic is recommended. See Engine Oil0316.
Hood Latch Assembly, Secondary Latch,
Pivots, Spring Anchor, and Release Pawl Lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer.
Rear Axle/Front Axle (All-Wheel Drive) See your dealer. Transfer Case (All-Wheel Drive) See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection
requirements.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
SERVICE AND MAINTENANCE 393
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained from your dealer.Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter
I2.0L L4 Engine 84498926 A3245C
I3.0L V6 Engine (Driver Side) 84335354 A3235C
I3.0L V6 Engine (Passenger Side) 84335354 A3235C
Engine Oil Filter I2.0L L4 Engine 55495105 PF66
I3.0L V6 Engine 19330000 PF63E
Passenger Compartment Air Filter IParticulate 13508023 CF185
ICarbon 23195727 CF184

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
394 SERVICE AND MAINTENANCE
PartGM Part Number ACDelco Part Number
Spark Plugs
I2.0L L4 Engine 55504354
41-103-IP
I3.0L V6 Engine 12650283
41-131
Wiper Blades IDriver Side –60 cm (23.62 in) 84566977
—
IPassenger Side –45 cm (17.72 in) 84574892
—

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
SERVICE AND MAINTENANCE 395
Maintenance Records
After the scheduled services are performed, record the date, odometer reading, who performed the service, and the type of
services performed in the boxes provided. Retain all maintenance receipts.Date Odometer
Reading Serviced By Maintenance Stamp Services Performed

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
396 TECHNICAL DATA
Technical Data
Vehicle Identification
Vehicle IdentificationNumber (VIN) . . . . . . . . . . . . . . . . . . . 396
Service Parts Identification . . . . . . 396
Vehicle Data
Capacities and Specifications . . . . 397
Engine Drive Belt Routing . . . . . . . 400
Vehicle Identification
Vehicle Identification
Number (VIN)
This legal identifier is in the front
corner of the instrument panel, on the
driver side of the vehicle. It can be
seen through the windshield from
outside. The Vehicle Identification
Number (VIN) also appears on the
Vehicle Certification label and
certificates of title and registration.
Engine Identification
The eighth character in the VIN is the
engine code. This code identifies the
vehicle's engine, specifications, and
replacement parts. See “Engine
Specifications” underCapacities and
Specifications 0397 for the vehicle's
engine code.
Service Parts Identification
There may be a large barcode on the
certification label on the center pillar
that you can scan for the following
information:
.Vehicle Identification Number (VIN)
.Model designation
.Paint information
.Production options
If there is not a large barcode on this
label, then you will find this same
information on a label inside of the
trunk.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
TECHNICAL DATA 397
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants
0 392 for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge amount, see the refrigerant label under thehood. See your dealer for more information.
Brake Fluid 0.4 L 0.4 qt
Engine Cooling System*
I2.0L L4 Engine 10.4 L 11.0 qt
I3.0L V6 Engine with Rear Wheel Drive 12.1 L 12.8 qt
I3.0L V6 Engine with All-Wheel Drive 12.3 L 13.0 qt
I3.0L V6 Engine Intercoolers 3.1 L 3.3 qt

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
398 TECHNICAL DATA
ApplicationCapacities
Metric English
Engine Oil with Filter
I2.0L L4 Engine 5.0 L
5.3 qt
I3.0L V6 Engine RWD 5.7 L
6.0 qt
I3.0L V6 Engine AWD 6.2 L
6.5 qt
Front Axle 0.40 L0.42 qt
Rear Axle
IOpen Differential - Small 0.75 L
0.79 qt
IOpen Differential - Large 1.0 L
1.0 qt
IMechanical Limited Slip 1.0 L
1.0 qt
IElectronic Limited Slip 1.5 L
1.5 qt
Fuel Tank 66.0 L17.5 gal

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
TECHNICAL DATA 399
ApplicationCapacities
Metric English
Transfer Case –AWD 0.80 L 0.85 qt
Wheel Nut Torque 190 Y140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LSY) KAutomatic0.65–0.75 mm (0.026–0.030 in)
3.0L V6 Engine (LGY) WAutomatic0.65–0.75 mm (0.026–0.030 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage the
spark plug.