2016 ATS-V is Ready for the Track CTS-V Builds on its Legacy. Techline News. What Do You Think? Take the 2015 TechLink Reader Survey

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Mid-September 2015, Volume 17, No. 18 2016 ATS-V is Ready for the Track 2016 CTS-V Builds on its Legacy The 2016 Cadillac ATS-V is a track performer wrapped in a compact luxury package.

The lightweight carbon fiber hood, for example, features an air-extracting vent that pulls hot air out of the engine compartment while also helping to reduce lift at speed by channeling air pulled

Techline News continued on page 2 The 2016 Cadillac CTS-V builds on the V-Series legacy, combining a luxury sedan with performance capabilities that make it the most capable V-Series ever.

1 Mid-September 2015, Volume 17, No ATS-V is Ready for the Track 2016 CTS-V Builds on its Legacy The 2016 Cadillac ATS-V is a track performer wrapped in a compact luxury package. Available as a coupe or sedan, it has the first-ever twinturbocharged engine in a V-Series model along with many other features designed to increase its performance metrics. The lightweight carbon fiber hood, for example, features an air-extracting vent that pulls hot air out of the engine compartment while also helping to reduce lift at speed by channeling air pulled through the radiator out and over the top of the car rather than allowing trapped air to exit under the car. Techline News continued on page 2 The 2016 Cadillac CTS-V builds on the V-Series legacy, combining a luxury sedan with performance capabilities that make it the most capable V-Series ever. With its supercharged 6.2L V8 engine, paddle-shift 8-speed automatic transmission featuring launch control and Performance Algorithm Shifting, the CTS-V is capable of 0-60 mph (0-100 km/h) performance in 3.7 seconds and a top speed of 200 mph (322 km/h). CONTENTS continued on page 3 What Do You Think? Take the 2015 TechLink Reader Survey At TechLink, our goal is to provide the latest GM technical news and repair information to help you quickly and accurately repair the vehicles that come into your service department every day. We cover a wide range of topics, from the latest diagnostic and technical repair information to Techline programming, new model features, special tools and more. We would like to hear from technicians and other service department professionals about the types of repair information to cover as well as get your thoughts on how we re doing. Your input will help in determining the coverage of future editions. So which topics are of interest and value to you? Click the Survey link on the right side of the TechLink home page to take a short survey about the information you want most in TechLink. The survey will be available until the end of October. Your input is very important to us. Thanks for taking the time to complete the survey. We ll share the results when the survey is complete. Thanks to Lisa Scott 2016 ATS-V is Ready for the Track CTS-V Builds on its Legacy Take the 2016 TechLink Survey Taking It to the Limit: Performance Traction Management... 4 New Mini-B USB Test Cable Sunroof Water or Air Leak... 6 Inoperative Left Front Audio Speaker.. 6 Unable to Select the Auto Memory Seat Recall Option... 6 Customer Care and Aftersales

2016 ATS-V is Ready for the Track continued from page 1 Twin Turbos Rated at 464 horsepower and 445 lb.-ft. of torque, the twin turbocharged 3.

It s available with a 6-speed manual transmission with Active Rev Match, no-lift shifting and launch control or a paddleshift 8-speed automatic transmission featuring launch control and Performance

Exclusive features for the ATS-V version of the twin turbocharged V6 engine include: Cylinder heads with sodium-filled exhaust valves with hardened seats and integrated exhaust manifolds An

2 2016 ATS-V is Ready for the Track continued from page 1 Twin Turbos Rated at 464 horsepower and 445 lb.-ft. of torque, the twin turbocharged 3.6L V6 engine (RPO LF4) is the segment s highest-output six-cylinder. It s available with a 6-speed manual transmission with Active Rev Match, no-lift shifting and launch control or a paddleshift 8-speed automatic transmission featuring launch control and Performance Algorithm Shift. A standard electronic limited-slip differential (elsd) supports optimal traction and enables maximum corner exit acceleration. Exclusive features for the ATS-V version of the twin turbocharged V6 engine include: Cylinder heads with sodium-filled exhaust valves with hardened seats and integrated exhaust manifolds An engine-mounted mechanical vacuum pump that ensures sufficient vacuum to control the turbochargers Lightweight titanium connecting rods that reduce inertia of the rotating assembly, complementing the quick-spooling turbochargers Cast aluminum pistons with a polymer coating A high-performance wet sump oil pan lubrication system, designed to maintain optimal oil pressure and ventilation during high-lateral driving maneuvers typically encountered on a track TIP: The twin turbocharged 3.6L V6 engine has a front and rear Mass Airflow Sensor with Intake Air Temperature Sensor. The charge air cooling intercooler uses two air-to-liquid coolers. The cooling air intakes are mounted on the lower sides of the front fascia in front of the tires. The intercooler combines air flow from both turbochargers and directs it to a single throttle body and reduces temperature by more than 130 F (74 C) at peak power. The air intakes for the intercooler are mounted on the lower sides of the front fascia. The twin turbochargers have low-inertia titanium-aluminide turbines and vacuum-actuated wastegates for more responsive torque production. Compressors are matched for peak efficiency at peak power levels, for optimal track performance. 8-Speed Automatic Transmission The Hydra-Matic 8L90 8-speed automatic transmission (RPO M5U) uses five clutches to direct power flow through the transmission. Each gear range has three clutches applied. During shifts, the Transmission Control Module (TCM) commands one clutch off and applies a different clutch. The clutch control solenoids control the application and release of the clutches. The Internal Mode Switch detects the angular position of the shift selector shaft and is used by the TCM to indicate the transmission gear selector lever position. This information is used for engine controls as well as determining the transmission shift patterns. The state of each input can be displayed on the scan tool. The transmission has a fluid pump mounted to the valve body. With the fluid pump moved off the input shaft, the length of the transmission stays similar to the 6L80 and 6L90 transmissions. 6-Speed Manual Transmission The Tremec TR speed manual transmission (RPO MG9) is a fully synchronized manual transmission with an enhanced synchronizer cone arrangement. An internal fluid pump circulates lubricating fluid to the transmission fluid cooler, which is part of the radiator. The Active Rev Matching of the manual transmission matches engine speed to road speed for the next gear for precise shifts. It s controlled using the paddles on the steering wheel. Amber gear numbers on the instrument cluster indicate Active Rev Matching is active. White numbers mean the system is not activated. Brakes and Suspension The Brembo high-performance brake system includes vented Ferritic Nitrocarburizing (FNC) brake rotors, with 14.5-inch-diameter (370 mm) front rotors with staggered six-piston calipers and 13.3-inch-diameter (339 mm) rear rotors with four-piston calipers. TIP: The front disc brake rotors are directional rotors and are not replaceable right side to left side. The high performance pads may generate a noticeable amount of brake dust. This is normal wear dust from the pads. The wheels can be cleaned using a soft cloth with mild soap and water. Rinse thoroughly and apply wax on the wheels to reduce the amount of accumulated dust. The ATS-V also features thirdgeneration Magnetic Ride Control and Performance Traction Management. Magnetic Ride Control reads the road a thousand times per second and uses that data to instantly adjust the magnetorheological fluid-filled dampers. This allows independent control of the damping characteristics of all four dampers. Performance Traction Management (PTM) is a traction, stability and chassis mode control system accessed through the Track mode of the Driver Mode Control system. Driver Modes are selected by using the Mode button on the center console. Each of the five PTM modes provides progressively less stability control and more aggressive slip targets, allowing the driver more control over vehicle handling and performance. Performance Data Recorder The Performance Data Recorder is controlled through the Cadillac CUE touch screen. It records high-definition video from the frontview camera to the owner-supplied SD data card in the glove box. Recordings can be reviewed on the touch screen when the vehicle is parked or downloaded to a computer. Refer to #PI1515 for additional information. To enroll in the available training courses on the ATS-V systems, go to (U.S) or, in Canada, go to GM GlobalConnect and select Centre of Learning. Thanks to Sherman Dixon and Mark Gordon The directional front rotors are left side or right side only. The PDR records HD video to the SD card in the glove box. 2 Mid-September 2015

Outside, the sleek exterior design features a standard carbon fiber hood and an available carbon fiber package that includes a carbon fiber splitter, hood vent, rear spoiler and rear diffuser for

3 2016 CTS-V Builds on its Legacy continued from page 1 Designed to Perform The CTS-V is designed to perform on the track or the open road. Inside the cabin, it features an interior with high-performance seats and ergonomics that put the focus on driving. Outside, the sleek exterior design features a standard carbon fiber hood and an available carbon fiber package that includes a carbon fiber splitter, hood vent, rear spoiler and rear diffuser for greater aerodynamic performance. Supercharged Engine The all-new supercharged 6.2L V8 engine (RPO LT4) has a power output of 640 horsepower and 630 lb.-ft. of torque. The lubrication system includes eight underside oil-spray squirters. Each one sprays oil on the underside of a piston and the surrounding cylinder wall to help reduce piston temperature and dampen noise. The supercharged 6.2L V8 engine generates 640 horsepower and 630 lb.-ft. of torque.column. The compact 1.7L supercharger increases the air pressure and density in the intake manifold to a maximum pressure boost of 9.7 psi (66.9 kpa). The boost pressure is controlled using a bypass valve. The supercharger s rotors are smaller in diameter than the previous supercharged engine, allowing higher maximum RPM and quicker spin up that enables power-enhancing boost to be generated earlier in the RPM band. The engine uses two intercoolers, one for each cylinder bank, that are integrated into the lower intake manifold. A capless fuel system is used on the CTS-V. When fueling the vehicle, insert the fuel nozzle slowly and wait for any hiss noise to stop prior to starting to add fuel. The fuel nozzle must be fully inserted and latched. After initial fuel pump shutoff, do not partially remove the nozzle to add more fuel. TIP: Overfilling the fuel tank by more than three clicks of a standard fuel nozzle may cause vehicle performance issues, including engine stalling and damage to the fuel system as well as fuel spills. 8-Speed Automatic Transmission The Hydra-Matic 8L90 8-speed automatic transmission (RPO M5U) uses five clutches to direct power flow through the transmission. There are no sprags or roller clutches. Each gear range has three clutches applied. During shifts, the Transmission Control Module (TCM) commands one clutch off and applies a different clutch. The clutch control solenoids control the application and release of the clutches. The paddle shift features a temporary tap mode and a permanent tap mode. The temporary tap mode is used while the transmission is in Drive. Either paddle behind the steering wheel can be used to temporarily take control of gear selection. If no shifts are made after 10 seconds, automatic shifting returns. The permanent tap mode is used with the transmission in Manual mode. The paddles are used to upshift or downshift. Brakes and Suspension A Brembo high-performance brake system provides durability, consistency and capability for track-day performance. The system includes Ferritic Nitrocarburizing (FNC) rotors for corrosion resistance. The vented and directional front rotors are inch diameter (390 mm) x inch (36 mm) with staggered six-piston calipers and the vented rear rotors are inch-diameter (365 mm) x 1.10-inch (28 mm) with four-piston calipers. The CTS-V also features the third-generation Magnetic Ride Control system and Performance Traction Management. Magnetic Ride Control reads the road a thousand times per second, sending data to magneto-rheological fluid-filled dampers that can independently control the damping characteristics of all four dampers. There are three driver-selectable Magnetic Ride Control modes: Touring, Sport, and Track. There are also four Driver Mode Controls available: Tour, Sport, Track, and Snow/Ice. Track mode provides maximum vehicle handling and offers five Performance Traction Management (PTM) Modes. The Mode button and Traction Control button on the center console enables drivers to select the Driver Modes and PTM Modes. Infotainment The Performance Data Recorder, controlled through the Cadillac CUE touch screen, allows drivers to record highdefinition video, with data overlays, of their driving experiences on and The PDR offers four different displays. off the track. It has four different displays: No Overlay, Sport, Track, and Performance Timing. The HD video is from the frontview camera mounted in front of the inside rearview mirror and is recorded on an SD card located in the glove box. Playback is available only when the vehicle is parked. Cadillac CUE enhancements include phone integration capability with Apple CarPlay and Android Auto capability (late availability). In addition, the wireless inductive charging system for smartphones, compatible with Powermat and other in-phone wireless charging technologies, allows drives to wirelessly charge their mobile device. To charge a compatible device using the wireless inductive charging system, the device is simply placed face up on the charging pad behind the climate controls panel. Refer to #PI1529 for additional information. To enroll in the available training courses on the CTS-V systems, go to (U.S) or, in Canada, go to GM GlobalConnect and select Centre of Learning. Thanks to Sherman Dixon and Carrie Harvey Mid-September

Taking It to the Limit: Performance Traction Management The performance of the 2016 ATS-V and CTS-V can be maximized for track events by using the Driver Mode Control and Performance Traction

Driver Mode Control Driver Mode Control changes the software calibrations of the suspension, steering and powertrain systems to adjust how the vehicle performs based on various driving preferences

4 Taking It to the Limit: Performance Traction Management The performance of the 2016 ATS-V and CTS-V can be maximized for track events by using the Driver Mode Control and Performance Traction Management systems. Driver Mode Control Driver Mode Control changes the software calibrations of the suspension, steering and powertrain systems to adjust how the vehicle performs based on various driving preferences and road conditions. Owners should be made aware of these changes and how they affect vehicle performance. There are four Driver Modes available: Tour, Sport, Snow/Ice, and Track. Track mode provides maximum vehicle handling performance and feedback. The Mode button on the center console enables drivers to select the different modes. Each mode progressively requires more driving skill by reducing the amount of traction control and stability control intervention and maximizing available engine power. Launch Control Launch Control is intended for use during closed course track events to help achieve high levels of vehicle acceleration in a straight line. It s automatically activated when the vehicle is in Track Mode and any of the five PTM Modes are activated, the vehicle is not moving, and the steering wheel is pointing straight. MODE Throttle Progression Transmission Shift Mode Driver Mode Summaries TOUR (Default) SPORT SNOW/ICE TRACK Normal Normal Snow/Ice Track Normal Sport Normal Track CTS-V Track Mode Steering (Assist Effort) Magnetic Ride Control Launch Control Stability Control Performance Traction Management Performance Traction Management Performance Traction Management (PTM) integrates the traction, stability and chassis mode control systems, accessed through the Track mode, and modifies the engine power for enhanced performance when cornering. To select PTM, once in Track mode, press the Traction Control Off button twice. The current mode is displayed on the Driver Information Center. Press the MODE button on the center console to select one of the five available PTM modes: WET (Active Handling On) DRY (Active Handling On) SPORT 1 (Active Handling On) SPORT 2 (Active Handling Off) RACE (Active Handling Off) Tour Sport Tour Track Tour Sport Tour Track Not Available Not Available Not Available Available Normal Normal Normal Track Off Off Off Available Mode button on CTS-V center console To use Launch Control, firmly depress the brake pedal or clutch pedal (if equipped), select 1st gear (manual transmission) or Drive, rapidly press the accelerator pedal to wide open throttle, and then release the brake pedal or clutch pedal while maintaining wide open throttle. The Launch Control feature will initially limit engine speed as the driver rapidly applies the accelerator pedal to wide open throttle. Track Events If a vehicle spends a day at the track, there are also several maintenance procedures that should be followed. Axle Fluid Axles must have 500 miles (885 km) before being used in track driving. The axle fluid temperatures may be higher after driving in severe conditions. It s recommended to change the fluid after the first track event, and then after every 24 hours of racing or competitive driving. The vehicle should not be driven as long or as fast the first time on the track. Engine Oil The supercharged 6.2L V8 engine (CTS-V) should use 0W-40 or 5W-40 oil that meets the dexos2 specification during track events. Automatic Transmission Fluid (CTS-V) Fill the transmission fluid to the track specific level prior to track use. If running a track session, check the transmission fluid level when the transmission fluid temperature is between C ( F). Brake Fluid For track events, it is recommended to use a highperformance brake fluid that has a dry boiling point greater than 279 C (534 F). After conversion to the high-performance brake fluid, follow the brake fluid service recommendations outlined by the fluid manufacturer. Do not use silicone or DOT-5 brake fluids. Brake Disc Splash Shield (CTS-V) Brake cooling can be improved if the front brake disc splash shield and front tire deflector are removed. Only remove the front brake disc splash shield and front tire deflector when driving in track events. Removing continued on page 5 4 Mid-September 2015

New Mini-B USB Test Cable for Trucks Now Available Designed for the infotainment systems available on 2014 Silverado 1500 and Sierra 1500 and 2015-2016 Silverado, Tahoe, Suburban, Sierra and Yukon

5 New Mini-B USB Test Cable for Trucks Now Available Designed for the infotainment systems available on 2014 Silverado 1500 and Sierra 1500 and Silverado, Tahoe, Suburban, Sierra and Yukon models, the new Male Mini-B to Male Mini-B USB Cable (EL ) can be used to verify proper LVDS (Low Voltage Differential Signaling) cable operation between components. The EL cable was recently shipped to dealerships. Using the cable during diagnosis will help pinpoint issues with audio/video communication on the cable between any two of the three following components: ICS (Integrated Center Stack), Taking It to the Limit: Performance Traction Management continued from page 4 Use the Mini-B USB Cable to test for a faulty cable between the ICS, HMI and Blu Ray player. HMI (Human Machine Interface) and Blu Ray player. This will help prevent unnecessary replacement of the ICS or HMI when the condition is the result of a faulty cable. The HMI is responsible for video, Bluetooth, USB, memory card reader, and speech recognition functions. The ICS assembly includes the infotainment display and controls. The EL USB cable allows data transfer on pins 1,2,4,5, while 3 is shielded. An off-the-shelf USB cable cannot be used because pin 3 would be used to carry data and pin 4 would be the signal shield drain wire. Other infotainment test cables, such as EL or EL , cannot be used because a smaller connector end is needed on these applications. Thanks to Chuck Berecz and Troy Henige the shield will require that the suspension bushings visible to the brake disc be protected with insulated thermal wrapping. Brake Burnishing To prepare the V-Series brake systems for track events, complete the appropriate high performance brake burnishing procedure outlined in the Owner Manual. During the burnishing procedure, the brake pads will smoke and produce an odor. The braking force and pedal travel may increase. After the procedure is complete, the brake pads may appear white at the rotor contact. Run this procedure in a safe manner and on dry pavement only. CTS-V brake disc splash shield Wheel Alignment Wheel alignment specifications for track use are listed in the Owner Manual. Tire Inflation Tire pressure should be adjusted for various types of race courses. Refer to the Owner Manual for tire inflation pressure guidelines. Thanks to Sherman Dixon, Mark Gordon and Carrie Harvey GM TechLink is published for all GM retail technicians and service consultants to provide timely information to help increase knowledge about GM products and improve the performance of the service department. Publisher: John Meade GM Customer Care and Aftersales Editor: Lisa G. Scott GM Customer Care and Aftersales Technical Editor: Mark Spencer /mspencer@gpstrategies.com Production Manager: Marie Meredith Graphic Design: 5by5 Design LLC /dkelly@5by5dzign.com Fax number: Write to: * TechLink PO Box 500 Troy, MI GM TechLink on the Web: : GM GlobalConnect General Motors service tips are intended for use by professional technicians, not a do-it-yourselfer. T hey are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the information applies to your vehicle or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information. Inclusion in this publication is not necessarily an endorsement of the individual or the company. Copyright 2015 General Motors All rights reserved. Mid-September

Sunroof Water or Air Leak A water leak and/or wind noise from the sunroof or headliner area may be found on some 2015 Silverado, Tahoe, Suburban, Sierra, Yukon models and Escalade models equipped

Inoperative Left Front Audio Speaker The left front audio speaker may be inoperative intermittently, cut in and out, or have poor audio quality on some 2015 Colorado and Canyon models equipped with

Inspect the left front tweeter wiring for: a possible pinched harness between the left side of the instrument panel carrier and mounting bracket a spread speaker connector terminal an incorrect

6 Sunroof Water or Air Leak A water leak and/or wind noise from the sunroof or headliner area may be found on some 2015 Silverado, Tahoe, Suburban, Sierra, Yukon models and Escalade models equipped with a sunroof (RPO CF5) that were built prior to June 1, Inoperative Left Front Audio Speaker The left front audio speaker may be inoperative intermittently, cut in and out, or have poor audio quality on some 2015 Colorado and Canyon models equipped with the Enhanced Speaker System (RPO UQ3). Inspect the left front tweeter wiring for: a possible pinched harness between the left side of the instrument panel carrier and mounting bracket a spread speaker connector terminal an incorrect speaker connector terminal shorted speaker wiring Sunroof glass seal The water leak may be difficult to reproduce and may require an extended water leak test. The leak may be coming from the headliner near the sunroof opening or cellular microphone grill and noticed at the left and/or right front floor/carpet if any water runs down the A pillars. These conditions may be caused by the sunroof glass seal being out of specification, which allows water/air to leak between the sunroof glass and seal. Replace the sunroof seal to repair these leak conditions. Thanks to Jim Will Replacing the speaker will not correct the condition if there is damage to the terminals or wiring. Repair or replace any terminals or damaged wiring as needed. Thanks to Ryan Dorland Unable to Select the Auto Memory Seat Recall Option The Auto Memory Recall option may not be available in the Vehicle Settings menu on the infotainment system of some 2016 LaCrosse models equipped with Memory Seats (RPO A45) and built before August 6, In order for the memory seats to recall the stored memory positions automatically when the ignition is turned on, Auto Memory Recall must be turned on in the Vehicle Settings menu. The Auto Memory Recall option should be listed in the Comfort and Convenience menu. Go to Settings > Vehicle > Comfort and Convenience > Auto Memory Recall. If the menu option does not appear in the menu, update the K40 Seat Memory Control Module using SPS and the latest calibrations available on TIS2Web. Refer to Seat Memory Control Module Programming and Setup in the appropriate Service Information for more details. After updating the Seat Memory Control Module, Auto Memory Recall will be listed in the Comfort and Convenience menu. Thanks to Christopher Hightower Option menu after the software update 6 Mid-September 2015

V-Series Convenience & Personalization Guide. cadillac.com

2018 V-Series Convenience & Personalization Guide cadillac.com Review this guide for an overview of some important performance features in your Cadillac ATS-V or CTS-V. Some optional equipment described