troubleshooting call volume

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If your vehicle is equipped with available Bluetooth®, it allows you to make and receive calls through your vehicle’s infotainment system. Here are the ways you can adjust the volume of a call.

Symptoms/Troubleshooting Steps

Troubleshooting Steps

Adjusting Call Volume

Call volume is determined by both the volume setting on your phone and the audio system’s volume. To adjust:

  1. On the phone: Use the controls on the phone itself to adjust the phone’s volume (you may need to enable this setting on your phone).
  2. On the audio system: Use the volume knob, touchscreen slider or steering wheel controls to adjust the audio system’s volume.

Once you end a phone call, you may need to readjust the audio system’s volume.

Still Having Issues?




There are several factors that may affect your Bluetooth call performance. A problem may be caused by your phone’s or vehicle infotainment system’s software. Be sure you have the latest software version for your phone. If you’ve updated your phone and are still experiencing Bluetooth calling concerns, try deleting your phone’s pairing and then pairing it again.


Your calls may break up or sound distorted for the following reasons:

  • The cellular signal is weak in your location
  • Other Bluetooth activity running in the background on your phone, such as searching the phone book or downloading a message
  • Other Bluetooth devices in the vehicle are paired with your phone. If the problem continues when you have a strong signal or when you’re sure there’s no other Bluetooth activity interfering, you may need to try deleting your phone from the paired devices list on your vehicle touchscreen and then pairing it again



Communicate with one of our specialists.

Information on this page is specific to the Cadillac models below. If your vehicle is not on the list or these instructions don't apply, then please see your Owner's Manual.

  • ATS Coupe 2015-2019
  • ATS-V Coupe 2016-2019
  • ATS Sedan 2013-2018
  • ATS-V Sedan 2016-2018
  • CT4 2020-2022
  • CT5 and CT5-V 2020-2022
  • CT6 2016-2020
  • CT6-V 2019-2020
  • CTS Coupe 2011-2014
  • CTS-V Coupe 2011-2015
  • CTS Sedan 2014-2019
  • CTS-V Coupe 2016-2019
  • CTS Sport Wagon 2010-2013
  • CTS-V Sport Wagon 2011-2014
  • ELR 2014, 2016
  • Escalade and Escalade ESV 2015-2022
  • SRX 2010-2016
  • XT4 2019-2022
  • XT5 2017-2022
  • XT6 2020-2022
  • XTS 2013-2019
  • The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc., and any use of such marks by General Motors is under license. Other trademarks and trade names are those of their respective owners.

  • Functionality varies by model. Full functionality requires compatible Bluetooth® and smartphone, and USB connectivity for some devices.

  • Diagnostic capabilities vary by model and plan. Message and data rates may apply. Requires contact method on file and enrollment to receive alerts. Not all issues will deliver alerts. Click here for details and limitations

  • Diagnostic capabilities vary by model and plan. On-Demand Diagnostics requires paid plan. Message and data rates may apply. Requires contact method on file and enrollment to receive alerts. Not all issues will deliver alerts. See for details and limitations.

  • The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Cadillac vehicles’ destination freight charges.

  • Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. Read the vehicle’s owner’s manual for important feature limitations and information.

  • Vehicle user interface is a product of Apple® and its terms and privacy statements apply. Requires compatible iPhone® and data plan rates apply. Apple CarPlay, Siri, iPhone and Apple Music are trademarks of Apple, Inc., registered in the U.S. and other countries.

  • Vehicle user interface is a product of Google and its terms and privacy statements apply. Requires the Android Auto app on Google Play and a compatible Android smartphone. Data plan rates apply. You can check which smartphones are compatible at Android, Google Play and Android Auto are trademarks of Google LLC.

  • Functionality is subject to limitations and varies by vehicle, infotainment system, and location. Select service plan required. Certain Alexa Skills require account linking to use. Amazon, Alexa and all related logos are trademarks of, Inc. or its affiliates. See for additional details.

  • The system wirelessly charges one compatible mobile device. Some phones have built-in wireless charging technology and others require a special adaptor/back cover. To check for phone or other device compatibility, see or consult your carrier.

  • Always pay attention while driving and when using Super Cruise. Do not use a hand-held device. Visit for compatible roads and full details.

  • MSRP excludes tax, title, license and dealer fees.

  • Read the vehicle's owner's manual for important feature limitations and information.

  • Lower-profile tires wear faster. Tire and wheel damage may occur on rough or damaged roads or from surfaces, curbs, debris or obstacles. This damage is not covered by the GM New Vehicle Limited Warranty. For more details, go to or see your dealer.