Technical Information for Repair and Service Operations
The Cadillac CT6 PLUG-IN delivers efficient performance with its hybrid powertrain, which combines a turbocharged 2.0L 4-cylinder engine and a lithium-ion high-voltage battery. The vehicle is equipped with three fully independent cooling systems for the high-voltage battery, power electronics, and engine control module.
Hybrid Powertrain
The CT6 PLUG-IN hybrid powertrain allows for electric-only propulsion under light to moderate driving conditions, using the 2.0L turbocharged engine as a supplementary power source. The vehicle’s battery energy control module manages the hybrid system, communicating with the hybrid powertrain control module through serial data.
High-Voltage Battery
The CT6 PLUG-IN’s high-voltage battery pack is equipped with 192 individual lithium-ion cells, connected in series as 96 parallel groups. The battery is charged using a high-voltage charger or a 240V charging station, and can be programmed with three charging modes.
Diagnostic Information
The vehicle’s diagnostic system uses various sensors and modules to monitor the hybrid powertrain’s performance. The Power Flow screen displays the current system operating conditions, while the Regen-on-Demand feature allows drivers to control energy regeneration using steering wheel paddles.
Special Tools and Equipment
GM has released new special tools and equipment for the CT6 PLUG-IN, including a high-voltage cable, battery lift bar, and PHEV depowering software. Service technicians must be fully trained to service the vehicle, as it requires specialized knowledge and equipment.
Regular Maintenance and Repair
Regular maintenance and repair procedures for the CT6 PLUG-IN are outlined in this publication. These procedures include diagnostic tests for misfires, static sound on Bluetooth calls, and audio system malfunctions, as well as instructions for installing air deflectors during PDI and replacing the rocker arm oil control valve.
Manual:
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