Description
Factory Cadillac CT6 Workshop Manual (2016-2020)
This factory-level service manual delivers complete mechanical, electrical, and diagnostic coverage for the first-generation Cadillac CT6 – GM’s flagship full-size luxury sedan sold across the United States from 2016 through 2020.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Gasoline | 2.0L LTG turbocharged I4; 3.0L LGW twin-turbo V6; 3.6L LGX V6; 4.2L LTA twin-turbo V8 (CT6-V Blackwing) |
| Hybrid | CT6 Plug-In Hybrid (PHEV) with 4-speed 4EL70 hybrid/electric transmission |
| Transmissions | 4EL70 hybrid/electric (4-speed); 8L45/8L90 8-speed automatic; 10L80 10-speed automatic |
| Drive | RWD and AWD |
| Model Years | 2016, 2017, 2018, 2019, 2020 |
| Badge Twins | N/A |
Common CT6 Repairs Covered
| System | Procedures |
|---|---|
| 2.0L LTG Turbo Oil Consumption | Piston ring inspection, PCV system diagnosis, valve stem seal replacement |
| Magnetic Ride Control Suspension | MagneRide damper replacement, ride height sensor calibration, DTC diagnosis |
| CUE Infotainment & BCM Electrical | Body control module programming, wiring harness inspection, touchscreen fault diagnosis |
| 8L45/8L90 Transmission Shudder | Torque converter clutch diagnosis, fluid flush and fill procedure, valve body service |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does this manual cover the CT6-V Blackwing?
Yes. The CT6-V equipped with the hand-built 4.2L LTA twin-turbo V8 Blackwing engine is included. You’ll find complete engine specifications, diagnostic procedures, and repair instructions for this powertrain alongside coverage for the standard 2.0L, 3.0L, and 3.6L engines.
Is the CT6 Plug-In Hybrid (PHEV) covered?
Yes. The CT6 PHEV, which pairs a 2.0L turbocharged engine with the 4-speed 4EL70 hybrid/electric transmission, is fully covered. High-voltage system safety procedures, battery module diagnostics, and hybrid drivetrain service steps are all included.
Are complete wiring diagrams included for the CT6’s electrical systems?
Yes. The manual contains full wiring diagrams for all circuits – engine management, body control modules, CUE infotainment, advanced driver assistance systems (ADAS), lighting, and the charging system. Connector pinouts and ground distribution charts are also provided to support systematic electrical fault diagnosis.
What format is the manual?
This manual is a PDF file delivered via instant download upon purchase. It is compatible with Windows, Mac, iOS, and Android devices using any standard PDF reader. Pages can be printed individually or in sections for shop use, and the file may be saved across multiple devices for convenient access.
Reviews
There are no reviews yet.