NHTSA ID Number: 10070971
Manufacturer Communication Number: PI1238
TSB/Document Date: 2016-06-13
Summary
SUMMARY TO BE PROVIDED ON A FUTURE DATE.
File in Section:
Bulletin No.:
Service Bulletin
Date:
PI1238
May, 2014
PRELIMINARY INFORMATION
Subject:
No XM on Start-Up when Manually Tuned and/or Using Voice Recognition, No Radio
Wake-Up
Models:
2014 Buick
LaCrosse, Regal
2013-2014 Cadillac ATS, SRX, XTS
2014 Cadillac CTS Sedan (VIN A), ELR
2015 Cadillac Escalade Models
2014 Chevrolet Corvette, Impala, Silverado 1500
2015 Chevrolet Silverado 2500/3500, Suburban, Tahoe
2014 GMC Sierra 1500
2015 GMC Sierra 2500/3500, Yukon Models
Equipped with RPOs IO3, IO4, IO5, IO6 or (RAO −UA3) (ATS Base Radio)
Condition/Concern
Some customers may comment on the following concerns listed in the table below:
RPOs IO3,
RAO (−UA3)
Condition
No Wake Up on start up. (A blank screen and no audio and battery cycle is required for
recovery).
X
No XM audio at startup in weak signal conditions.
X
Using Speech Recognition to tune to an XM station will not function until the radio has been
sourced to XM and the channel list can be built.
RPOs IO4,
IO5, IO6
X
X
Radio resets after start up every 40 seconds.
X
Rear view camera DTC B127.08 will set incorrectly.
X
X
Recommendation/Instructions
Before updating software, check the tuner build version. The “Audio Soft Version” label should be 000474 or lower. If
version 000477 is already installed, DO NOT reprogram. Software corruption can occur. Check the software
version by:
For IO3/RAO−UA3 (Sierra shown for reference)
Buick
Power+Menu+Home
Home+Volume Down
Power+Menu+Home
Power+Menu+Home
1. Press the button combination shown in the table above.
3826672
2. Select “Tuner.”
3826675
3. Select “Traceability Info.”
3826680
4. Scroll down to “Audio Soft Version.”
IO4, IO5, IO6 (Escalade shown for reference)
Buick
Power+Menu+Home
Home+Volume Down
Power+Menu+Home
Power+Menu+Home
1. Press the button combination shown in the table above.
3825875
2. Select “Tuner.”
3825876
3. Select “Traceability Info.”
3825877
4. Scroll down to “Audio Soft Version.”
Note: “Tuner” may not always show when checking the software version. This may need to be repeated more than
once for tuner selection to be available.
An updated software calibration has been released to address these conditions.
Important: Verify the battery voltage is more than 12 volts but less than 16 volts before proceeding with
reprogramming. The battery must be fully charged BEFORE reprogramming.
Important: During reprogramming, the battery voltage must be maintained within the proper range of 12-15.5 volts.
CONNECT the approved Midtronics® PSC 550 Battery Maintainer (SPS Programming Support Tool (EL-49642) to
the vehicle or the GR8 (EL50313) in the power supply mode.
Update the radio using the Service Programming System (SPS) with the latest calibrations available on TIS2WEB.
Refer to the SPS procedures in SI.
Important: The vehicle modules MUST go to sleep for 5 minutes after programming the radio. If not, the vehicle
may not have sound, blank screen, no touch response or the wrong splash screen may appear on the screen. If this
happens, shut off vehicle and wait the required 5 minutes before starting vehicle again.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
2810335
Radio Reprogramming with SPS
Use Published
Labor
Operation Time
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TSB/Document ID: PI1238
Replacement Service Bulletin Number:
MFR Communication Date: 2014-05-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT:ELECTRICAL
MFR Component System:
MFR Component Subsystem:
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