Disclaimer2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 09-08-44-020B Date: 100514

Disclaimer2010 Cadillac Truck SRX AWD V6-2.8L Turbo Technical Service Bulletin # 09-08-44-020B Date: 100514

Audio System - Erratic/Intermittent Operation

TECHNICAL

Bulletin No.: 09-08-44-020B

Date: May 13, 2010

Subject: Intermittent Radio Operation, Audio Inoperative or Stuck on Low, Volume Changes, Radio Resets, HVAC Displays are Blank, Turn by

Turn Inaudible, Radio/HUD Information Does Not Match (RPO UYZ Only - Update Radio Software Using SPS)

Models:

2010 Buick LaCrosse

2010 Cadillac SRX

2010 Chevrolet Equinox

2010 GMC Terrain

Equipped With Radio RPO UYZ

Supercede:

This bulletin is being revised to include additional conditions. Please discard Corporate Bulletin Number 09-08-44-020A (Section 08 - Body and

Accessories).

Condition

Some customers may comment on any of the following intermittent radio operating conditions:

- Audio is inoperative when the vehicle is started, and the volume had been set at zero before the vehicle was turned off.

- Heating, ventilation and air conditioning (HVAC) pop-up displays are blank or frozen.

- Favorite Page or preset reverts to factory default Favorite Page 1, Preset 1.

- Radio does not start functioning.

- Radio may not return to the main screen after a phone call.

- Radio resets multiple times.

- Radio volume is limited to low.

- Radio volume is limited when high internal temperatures are detected.

- Rear seat entertainment (RSE) display remains off after canceling retained accessory power (RAP).

- Time shift playback may result in no audio.

- Radio does not turn on and Transport mode is displayed on cluster.

- Turn by Turn announcements are very soft.

- Unexpected radio volume changes.

- Unwanted DVD playback resets.

- XM tuning when using quick steering wheel control presses results in the audio not matching the displayed information.

- Radio information that is displayed does not match the head up (HUD) information that is displayed.

- Radio will reset when playing previously recorded AM/FM audio selections of approximately 30 minutes when they were using the time shift

function.

Cause

These conditions may be caused by a radio software anomaly.

Correction

Important

DO NOT replace the radio for any of the above conditions UNTIL IT HAS FIRST been reprogrammed with the latest calibration.

- A revised radio calibration has been released to address this condition. Reprogram the radio using the Service Programming System (SPS)

with the latest calibration available on TIS2WEB. Refer to the SPS procedures in SI.

- When using a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

- During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics(R)

PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

Warranty Information

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 252

For vehicles repaired under warranty, use the table above.