Some personalization selections may be missing from the Comfort and Convenience Settings menu on some 2017-2018 Envision, CT6, Escalade, Impala, Silverado, Tahoe, Suburban; 2017 ATS, CTS; and 2018 Sierra and Yukon models equipped with infotainment system RPO IO5 or IO6.
Comfort and Convenience Menu
When selecting Settings > Vehicle > Comfort and Convenience (Fig. 15), the following items may be missing at times: Auto Memory Recall, Easy Exit Features, Reverse Tilt Mirror, Auto Fold Mirror, and Safety Alert Seat.
Fig. 15
The missing Comfort and Convenience menu items may not appear when the vehicle is started and will not reappear for the entire ignition cycle. However, if the ignition is turned off briefly and on again before the radio/tuner has a chance to go to sleep, the menu items will typically reappear. The missing menu items are a result of a timing issue between the Memory Seat Module and the radio/tuner when the key is turned on.
If this condition is found with items missing at times from the Comfort and Convenience menu, reprogram the Memory Seat Module with the latest TIS2Web calibrations. If menu items are always missing from a Settings menu and never reappear over a short key cycle, or if any related DTCs are stored, follow the diagnostic procedures in the Service Information.
TIP: Depending on the vehicle, TIS2Web may list both a driver and passenger Memory Seat Module. If this case, select and reprogram the driver Memory Seat Module. Refer to Seat Memory Control Module Programming and Setup in the appropriate Service Information.
Following Memory Seat Module programming, the memory seat adjustment settings will need to be stored again.
Refer to Bulletin #18-NA-039 for additional information.
Other Settings Menus
If menu items are missing from other Settings menus, such as Climate and Air Quality, Collision/Detection Systems, or Lighting (Fig. 16), on 2016-2017 Camaro and 2017 Encore, Envision, LaCrosse, ATS, CTS, CT6, Escalade, XTS, XT5, Colorado, Corvette, Cruze, Impala, Malibu, Silverado, Tahoe, Suburban, Volt, Acadia, Canyon, Sierra and Yukon models equipped with infotainment system RPO IO5 or IO6, the radio tuner module may need to be replaced.
Fig. 16
Just as with the Comfort and Convenience menu items, these other Settings menu items may not appear when the vehicle is started and will not reappear for the entire ignition cycle, but may reappear if the ignition is turned off briefly and on again before the radio/tuner has a chance to go to sleep. In addition, when selecting the climate control settings, the HVAC system will respond correctly but the selections will not be displayed on the bottom of the infotainment screen.
When replacing the radio tuner module, refer to Radio Replacement in the appropriate Service Information.
For more information, refer to Bulletin #17-NA-186.
– Thanks to Jamie Parkhurst
