NHTSA ID Number: 10185717
Manufacturer Communication Number: PIC6423
Summary
This Preliminary Information communication requests information from the technician about vehicles that may have Bluetooth or phone projection issues. Dealer should request as much information from the customer on the concern as possible and fill in the questionnaire.
16 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| BUICK | ENCORE GX | 2021 |
| CADILLAC | CT4 | 2021 |
| CADILLAC | CT5 | 2021 |
| CADILLAC | ESCALADE | 2021 |
| CADILLAC | XT5 | 2021 |
| CADILLAC | XT6 | 2021 |
| CHEVROLET | BLAZER | 2021 |
| CHEVROLET | COLORADO | 2021 |
| CHEVROLET | MALIBU | 2021 |
| CHEVROLET | SILVERADO 1500 | 2021 |
| CHEVROLET | SUBURBAN | 2021 |
| CHEVROLET | TAHOE | 2021 |
| GMC | ACADIA | 2021 |
| GMC | CANYON | 2021 |
| GMC | SIERRA 1500 | 2021 |
| GMC | YUKON | 2021 |
SEOCONTENT-START
Bulletin No.: PIC6423
Published date: 12/8/2020
Preliminary Information
PIC6423 Bluetooth and Phone Projection Worksheet and TAC
Template for Service Consultants and Technicians
Models
| Brand: | Model: | Model Years: | VIN: | Engine |
Transmissions |
|
| from | to | |||||
| Buick |
Encore GX | 2021 | All | All | All | All |
| Cadillac |
CT5 | 2021 | All | All | All | All |
| Cadillac |
Escalade | 2021 | All | All | All | All |
| Cadillac |
CT4 | 2021 | All | All | All | All |
| Cadillac |
XT5 | 2021 | All | All | All | All |
| Cadillac |
XT6 | 2021 | All | All | All | All |
| Chevrolet |
Blazer | 2021 | All | All | All | All |
| Chevrolet |
Colorado | 2021 | All | All | All | All |
| Chevrolet |
Malibu | 2021 | All | All | All | All |
| Chevrolet |
Silverado | 2021 | All | All | All | All |
| Chevrolet |
Suburban | 2021 | All | All | All | All |
| Chevrolet |
Tahoe | 2021 | All | All | All | All |
| GMC | Acadia | 2021 | All | All | All | All |
| GMC | Canyon | 2021 | All | All | All | All |
| GMC | Sierra | 2021 | All | All | All | All |
| GMC | Yukon | 2021 | All | All | All | All |
| Involved Region or Country | North America |
| Additional Options (RPO) | With Infotainment system IOR, IOS, IOT, IOU, IOV |
| Condition | This document serves as an aid for what information service consultants and technicians should gather from both the customer and the vehicle before and during the diagnosis of any Bluetooth or Phone Projection concerns, including
Android Auto and Apple CarPlay. If you determine it is necessary to contact GM TAC for Bluetooth or Phone Projection concerns, including Android Auto and Apple CarPlay concerns, please include the Bluetooth or Phone Projection TAC Template in your TAC DCM case. The template is located below the Diagnostic Aids. |
Correction:
Service Procedure
If you experience a Phone Projection issue
- Use these steps to determine if the device is connected over Android Auto, Apple CarPlay, or Bluetooth:
- Steps:
- Open Settings.
- Select System.
- Select Phones.
- The Connected device list shows which connection method is being used. -Android Auto connection
-Apple CarPlay connection
-Bluetooth connection (no connection type listed, just “Outgoing and Incoming calls” or “Incoming calls”) e. If you are still not sure, please take a picture and upload to TAC case through DCM.
- If the connection is Android Auto or Apple CarPlay, note if it is wired or wireless. You can confirm its wired projection:
- If its connected via USB.
- If projection session is disconnected after disconnecting via USB.
- Please check Device OS version and app version. (these steps will vary by phone manufacturer and OS version)
- If its an Android Auto issue. Device type. (e.g.: Galaxy 10+) b. Android OS version:
- Open the Settings app.
- Select About Phone.
- Select Software information.
- Android version shows the version of Android running on the device.
Android Auto version:
- Open the Settings app.
- Select Apps.
- Select Android Auto.
- At the bottom of the screen is the app version. (e.g.: Version 5.4.502264-release) If its a CarPlay issue.
- Device version. (e.g.: iPhone7, iPhone XR)
- iOS version:
- Enter phone Settings.
- Select General.
- Select About.
- Software Version shows the iOS version.
- Please check if its vehicle Demo Mode. (not applicable to RPO IOR)
Cadillac
shown, Buick
, Chevrolet
and GMC similar.
If you experience a wireless CarPlay connection issue:
- Please check if its a newly paired device or reconnection of existing device.
- Reboot the phone and see if the concern continues.
Important: If you experience an audio quality issue, with any connection method, here are some additional checks
- Does the concern happen when parked or only when driving? If so pleased record the location
- If the issue is with music streaming:
- Which music service/app has the concern?
- Is it happening with music stored on the device or streaming from the app?
- If streaming, is the device connected to the vehicle WiFi hotspot or using its own data connection?
- What is the cellular signal strength of the device providing the data connection?
- Is the issue involving a phone call? If so what is the cellular network strength? Diagnostic Aids
- Wireless projection is connected via WiFi. If the vehicle passes a WiFi interference area, audio quality and latency issues can be observed.
- Bluetooth is required to reconnect. The vehicle connects to the phone with Bluetooth then makes the WiFi connection.
Bluetooth or Phone Projection TAC Template
- Which connection method is being used?
- If the connection is Android Auto or Apple CarPlay? (wireless /wired):
- Android OS version – b. Android Auto version – c. iOS version –
- Is it in vehicle Demo Mode? (not applicable to RPO IOR) (Y/N)
If you experience a wireless CarPlay connection issues:
- Is it newly paired or reconnected device?
- Does concern continue after device Reboot? (Y/N)
For audio quality concerns:
- Does it happen when parked or driving? If so record the location.
- If the issue is with music streaming:
- Which music service/app has the concern?
- Is it happening with music stored on the device or streaming from the app?
- If streaming, is the device connected to the vehicle WiFi hotspot or using its own data connection?
- Record the cellular signal strength of the device providing the data connection. (# of bars) –
- Is this issue is involving a phone call? If so record the cellular signal strength. (# of bars) –
Version History
| Version | 1 |
| Modified | 12/08//2020 – Created on. |
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: PIC6423
Published date: 12/8/2020
MC-10185717-9999.pdf 104.012KB
- Wireless Freedom - Say goodbye to tangled cords with the Twelve South AirFly. Listen to audio from in-flight entertainment, gym equipment, gaming devices, or any 3.5mm audio jack to your AirPods, earbuds, or wireless headphones.
- Extended Battery Life - Enjoy uninterrupted audio for over 20 hours on a single charge, perfect for long-haul flights. Plus, the AirFly can be used while charging with the included USB-C cable, ensuring you never run out of battery life.
- Compact and Portable - Designed for convenience, the Twelve South AirFly is lightweight and easy to carry, making it an essential travel accessory for anyone who values comfort and high-quality audio on the go.
- Seamless Bluetooth Connectivity – Quickly pairs with your AirPods, wireless earbuds, or headphones for a hassle-free listening experience, letting you enjoy your favorite music, movies, or games in seconds.
- Intuitive Controls – Easily adjust volume with built-in buttons, giving you full control of your audio.
- Crystal Clear Music Streaming: LENCENT T25 is anti- statics designed, and equipped with noise and wind suppressed by CVC technology that can achieve full duplex sound quality. You can stream music on your car stereo via Bluetooth/ USB Flash Drive (≤32GB) / microSD Card (≤32GB). WMA MP3 WAV APE FLAC music formats are all supported
- Intelligent Dual USB Ports & Safe Charging: Coming with 2 USB ports(5V-2.4A and 5V-1A), you can charge two devices simultaneously. Built-in over-current protection, over-voltage protection, intelligent temperature control, short circuit protection, it will effectively ensure safe charging
- Hands-Free Calling & Voice Navigation: Bluetooth provides a stable connection, while Noise Suppression (CVC) technology and echo-cancellation grants an amazing hands-free calling experience. Besides, you can also get clear voice navigation from your phone’s app, which means driving will be more safely
- Car Battery Voltage Detection & Blue Ambient Light: The FM transmitter will display car’s voltage when plugged into the cigarette lighter. Keep abreast of car battery health at all times to avoid problems when driving. With the circle of blue backlight around this car charger, it will greatly simplify your operation for safer driving. (Please compare the size between the transmitter and your car cigarette lighter )
- Wider Range & Compatibility: This Bluetooth transmitter is well compatible with most of the smartphones and more devices that equipped with bluetooth function. It will automatically connect to its memorized paired Bluetooth device when power on. Also, with the wider range from 88.1MHz - 107.9 MHz, you can get more stable and consequent music experience without interference
- 54W High Power Fast Charging, 4-Port Synchronous Charging: Nulaxy Bluetooth car adapter integrates PD36W and QC18W, offering a high-speed and efficient charging solution. Its innovative four-port design supports parallel charging of multiple devices, effortlessly overcoming battery anxiety and enhancing charging efficiency.
- Technological Leadership, Revolutionary Bluetooth 5.3: The iphone fm transmitter for car radio uses the latest Bluetooth 5.3 technology, significantly improving connection speed and data transmission
efficiency. Enhanced sound quality ensures rapid and stable connections, providing a clearer, smoother experience for both calls and music playback. - Stunning Bass, Colorful Lighting Effects: One-touch activation of stunning bass effects reproduces the true texture of music, offering an unparalleled musical experience. The five-color lighting design provides accurate perception at night, ensuring easy and safe operation, making nighttime driving more relaxed.
- Voice Commands and Precise Touch Control: Our bluetooth cigarette lighter adapter supports smart voice navigation from your phone for truly hands-free driving. Its unique raised button design provides precise, sightless control, ensuring safety and convenience while driving.
- Comprehensive Safety Assurance and Wide Compatibility: FM modulator bluetooth for car provides all-around safety protection, including over-current, over-voltage, overheating, and short-circuit protection, ensuring the safety of you and your devices. Its wide compatibility supports 12V to 24V vehicle voltages, suitable for most cars. Nulaxy continues to innovate, offering industry-leading car Bluetooth adapter that ensure safety and compatibility. (Please compare the size between the transmitter and your car cigarette lighter )
- Latest Bluetooth 6.0 Technology: With Bluetooth 6.0, connect the device faster and get a more stable signal transmission
. Whether watching videos or playing games, the synchronization of audio and video is significantly improved, reducing the trouble caused by delay and improving the entertainment experience. (If pairing fails, please reset the adapter: With the device powered off, press and hold the multifunction button for 10 seconds.) - Maximum 18 Hours Battery: It can last up to 18 hours to meet your all-day use needs. This device is the best companion whether you frequently travel for leisure or business trips. You can enjoy uninterrupted music or calls without frequent charging.(RX: 18H/ TX: 16H )
- Built-in Microphone: The built-in microphone of the ugreen allows you to answer calls directly without interrupting music playback when the device is connected to a mobile phone to play music; ugreen ensures that you do not miss any important calls while enjoying music.
- 10M Transmission
Distance: The 10-meter transmission
distance allows you to move freely within your home or office without worrying about interruptions in the audio signal. No matter where you are in the room, you can enjoy stable audio transmission
. - 2 In 1 Bluetooth Transmitter Receiver: In TX mode, you can connect the device to a TV, airplane, and other devices without Bluetooth function, and then connect Bluetooth headphones to listen to music; in RX mode, you can turn non-Bluetooth stereo devices such as car audio, old speakers into Bluetooth devices, and then connect mobile phones, computers, etc. to play music; without the constraints of cables, move more freely without affecting audio playback. (Please make sure the correct mode is selected before use.)
- USB-C to 3.5mm Bluetooth Receiver – Breathe New Life into Your Old Audio Gear Got a classic stereo system, an old set of powered speakers, or a vintage amplifier collecting dust? This little adapter plugs into their 3.5mm AUX input and streams music directly from your smartphone or tablet via Bluetooth. Suddenly, your cherished old equipment is wireless-ready. Picture yourself hosting a backyard barbecue – stream your summer playlist from your phone to the outdoor speakers without moving an inch from the grill.
- 3.5mm AUX Adapter for Wireless Headphones – Your In-Flight Entertainment Game Changer That tiny airplane seatback screen becomes your personal cinema when you pair it with your favorite wireless earbuds or headphones. No more borrowing scratchy airline earbuds or fighting with a short cord that won't reach your ears. Just plug this adapter into the armrest jack, clip it onto your seatback pocket, and enjoy crystal-clear audio from your own premium wireless earbuds. Works beautifully on overnight red-eye flights where you want to watch movies without waking your neighbor.
- 2-in-1 Transmitter & Receiver – One Device, Two Ways to Connect This isn't just a one-trick pony. In transmitter (TX) mode, it sends audio from non-Bluetooth devices like airplane screens, gym TVs, or car AUX ports to your wireless headphones. In receiver (RX) mode, it turns any wired speaker system into a Bluetooth speaker for your phone. With 13 hours of battery life in RX and 14 hours in TX, plus a quick 2-hour recharge, it's the Swiss Army knife of audio adapters for any traveler.
- Bluetooth 5.4 with Dual Pairing – Two Listeners, Zero Compromise Traveling with a partner or kids? Dual pairing lets you connect two sets of headphones or two speakers at the same time. Watch the same movie side-by-side on a long flight – each with their own headphones and preferred volume. Or connect two speakers at a picnic for fuller, room-filling sound. Bluetooth 5.4 ensures both streams stay perfectly synchronized with the video, so you never hear that awkward echo or delay. A true social audio solution for shared entertainment.
- Hands-Free Calling via Car Stereo – Keep Your Focus on the Road We've all been there – fumbling for the phone while driving to answer an important call. This adapter changes that. Plug it into your car's AUX port, pair once with your phone, and every call routes through your vehicle's speakers. The built-in mic picks up your voice clearly, even with road noise. Whether you're navigating rush hour traffic or cruising down the highway, answer calls with a tap and keep your eyes where they belong – on the road ahead.
This product presentation was made with AAWP plugin.





