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2015 Corvette: GM TechLink: XM Audio, Radio Lock-Up and other Audio Conditions

Subject:    XM Audio, Radio Lock-Up and other Audio Conditions
Model and Year:  2015 LaCrosse, Regal, ATS, CTS sedan (VIN A), ELR, Escalade models, SRX, XTS, Corvette, Impala (VIN 1), Silverado, Suburban, Tahoe, Sierra, and Yukon models equipped with infotainment system RPOs IO3, IO4, IO5, or IO6
Source:  GM TechLink
Page Number:   NA
Date:  February 5, 2015

There may be several radio conditions present on some 2015 LaCrosse, Regal, ATS, CTS sedan (VIN A), ELR, Escalade models, SRX, XTS, Corvette, Impala (VIN 1), Silverado, Suburban, Tahoe, Sierra, and Yukon models equipped with infotainment system RPOs IO3, IO4, IO5, or IO6.

These audio conditions may include:

• Slow response tuning to XM stations

• Poor radio reception

• Time shift rewind/pause button highlighted but does not function

• Radio lock-up when the clock screen mode is activated

• If the audio source is changed right before turning off the ignition, the next ignition cycle may not have any audio

• Removal of vertical line between clock and temperature

• No XM audio, returns on next ignition cycle

An updated software calibration has been released to address these conditions. Reprogram the radio using the Service Programming System (SPS) with the latest calibrations available on TIS2Web.

TIP: The IO3 infotainment system may take 2-plus hours to complete programming. Due to the length in programming, a wired internet connection is preferred. When programming the IO3 infotainment system, do not let the TIS2Web computer go to sleep during the programming event.

The vehicle modules must go to sleep for five minutes after programming the Human Machine Interface (HMI) module. If not, the vehicle may have a blank screen, no audio, no touch response, or the wrong splash screen may appear on the screen. If this happens, turn off the vehicle and wait the required five minutes before starting vehicle again.

- Thanks to Hassan Abdallah

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