Luxurious New CT6 is Cadillac’s Range-Topping Sedan

The all-new CT6 leads Cadillac’s nomenclature change at the top of the Cadillac line-up. (Fig. 1) Riding on the rear-wheel-drive Omega architecture, the new sedan is built using GM’s most advanced manufacturing methods and has many features that are first-time offerings on any GM model.


2016 Cadillac CT6, Los Angeles, CA

Fig. 1




The CT6 has three available engines. The base engine is a turbocharged 2.0L 4-cylinder engine (RPO LTG) that generates 265 horsepower and 295 lb.-ft. of torque.


The all-new twin-turbocharged 3.0L V6 engine (RPO LGW), producing 404 horsepower and 400 lb.-ft. of torque, features Active Fuel Management (AFM). (Fig. 2) The engine features turbochargers with lightweight, low-inertia titanium-aluminide turbine wheels and an efficient, patented low-volume charge-air cooler.


The all-new 3.6L V6 engine (RPO LGX) is a clean-sheet engine redesign of the DOHC V6 engine family and offers 335 horsepower and 284 lf.-ft. of torque. It incorporates Active Fuel Management (AFM) and Auto Stop/Start technology along with direct injection and continuously variable valve timing.


F02 CT6 30 engine

Fig. 2


The fuel-saving engine Auto Stop/Start system is integrated on all three engines. It turns off the engine under certain driving conditions when the brake pedal is applied and the vehicle is at a complete stop. An upgraded starter motor and advanced battery technology support the increased number of engine starts. The starter motor has a high performance electric motor and stronger pinion engagement mechanism. An intelligent battery sensor module monitors the state of charge and health of the battery, which are used by the ECM to determine if the Stop/Start function may be performed.


Two transmissions are available. The Hydra-matic 8L45 8-speed automatic transmission (RPO M5N) is mated with the 2.0L turbo engine and the 3.6L V6 engine. The Hydra-matic 8L90 8-speed automatic transmission (RPO M5X), which is designed and tuned for higher power outputs, is matched with the 3.0L twin turbocharged V6 engine.


Body Structure


The CT6 features one of the industry’s most advanced automotive body structures with an aluminum-intensive architecture (Fig. 3) that incorporates 11 different materials.


For the CT6, engineers developed new body construction techniques and technologies to allow various types of advanced and lightweight materials to be combined within the manufacturing environment, including proprietary aluminum spot welding technology that is more efficient and helps reduce weight. Laser welding, flow drill fasteners and advanced structural adhesives are also employed. Thirteen high-pressure aluminum die castings in the lower body construction reduce complexity and are significant contributors to the architecture’s low mass. The CT6 also has all aluminum exterior body panels.


F03 CT6 aluminum content

Fig. 3


TIP: In the event of a collision, CT6 vehicles requiring structural repairs should be sent to a Cadillac Aluminum Repair Network (CARN) facility. These approved facilities have the training, equipment and tools necessary to properly perform structural repairs. In the U.S., contact the Cadillac Collision Transport Center at 1-877-798-2989 to arrange transport of the vehicle to the nearest CARN facility. This number is for dealerships only. In Canada, dealerships should refer the vehicle to one of the Cadillac-certified aluminum repair facilities in Canada.


The CT6 comes equipped with a high arm multi-link short/long arm suspension. The control arms are made from forged aluminum to reduce weight. The multi-link suspension replaces the lower control arms with two lower links.


The 5-link rear suspension uses forged aluminum control links to increase strength and reduce weight. The long suspension links minimize caster and camber change.


Interior Features


Inside the CT6, extended comfort seats feature premium Opus leather, five massage programs, reclining rear seats and Cadillac’s first application of woven-in-seat heating elements.


An articulating rear seat package offers approximately 3.3 inches (83 mm) of adjustable seat travel, lumbar adjustment, tilting cushions, a massage feature, heating/cooling features and an armrest with media controls.


The Bose® Panaray® audio system (Fig. 4), which is the first to use Bose VideoWave®, Articulated Array® and line array speakers in an automotive environment, has 34 speakers strategically integrated in the vehicle cabin, of which 33 are 3.94 inches (100 mm) or less in size. The VideoWave speakers are integrated into the floor.


2016 Cadillac CT6, Los Angeles, CA

Fig. 4


The CT6 is equipped with a large 10.2-inch (259 mm) diagonal Cadillac CUE interface screen. The capacitive-touch screen reacts faster when scrolling and recognizes handwriting for address and points of interest searches. The touchpad allows control of CUE features while resting an arm on the center console rather than touching the screen. (Fig. 5)


2016 Cadillac CT6, Los Angeles, CA

Fig. 5


Safety Features


There are many new safety and technology features available on the CT6. The Backing Warning and Rear Automatic Braking system on vehicles equipped with Adaptive Cruise Control can warn of rear objects when backing up at speeds greater than 5 mph (8 km/h). When the system detects a potential collision, beeps will be heard from the rear, or five pulses will be felt on both sides of the Safety Alert Seat. There may also be a brief, sharp application of the brakes.


The Night Vision system can help the driver see and be alerted to pedestrians or large animals ahead of the vehicle beyond the area lit by the headlamps. A thermal heat image of the view ahead is displayed when it is dark enough outside. (Fig. 6) If a pedestrian or large animal is detected more than 82 ft. (25 m) away, an amber pedestrian or animal icon displays and a box appears around the pedestrian or animal on the instrument cluster. When the system detects that the vehicle is approaching a pedestrian ahead much too quickly, the amber box changes to red. With the Front Pedestrian Braking system turned on, Night Vision provides a red Head-Up Display (HUD) alert when the system detects that the vehicle is approaching a pedestrian ahead much too quickly.


2016 Cadillac CT6, Los Angeles, CA

Fig. 6


Also available on the CT6 is Cadillac’s patented new industry-leading Rear Camera Mirror system, which enhances the driver’s rear vision by an estimated 300 percent compared to a conventional inside rearview mirror. A high-dynamic range camera records wider images behind the car, streams the image to video processing software that removes obstacles — such as the roof, rear pillars and rear seat passengers — and projects an unobstructed view to the in-mirror display. (Fig. 7) The display is a 1280 by 240-pixel TFT-Liquid Crystal Display (LCD) with 171-pixels per inch.


Drivers can disable the mirror’s video streaming function and use the traditional electrochromic rearview mirror by flipping the toggle on the underside of the mirror.


2016 Cadillac CT6, Los Angeles, CA

Fig. 7


Automatic Vehicle Hold (AVH), when activated, can prevent the vehicle from moving when stopped. It can be turned on by pressing the AVH button with the driver’s safety belt fastened, the driver’s door closed, and the engine running. After the brake pedal has been released and before the accelerator pedal has been pressed, AVH uses braking pressure to hold the vehicle stationary. In addition, the ABS pump motor may activate to build brake pressure to maintain the vehicle at a standstill if necessary. If AVH is holding the vehicle, the AVH indicator will change to green. While AVH is holding the vehicle, the parking brake will engage if the driver’s door is opened or the driver’s safety belt is unfastened.


Special Tools


The following new tools were released for the CT6:

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For additional information on the all-new Cadillac CT6, refer to Bulletin #16-NA-112.


– Thanks to Sherman Dixon and Blake Streling

Service Know-How
CT6 Active Chassis System

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