Short Range Radar (SRR) with DTC U3000 49 Set – 2021 Cadillac Chevrolet GMC

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Subject: Short Range Radar (SRR) with DTC U3000 49 Set
Transmission:
Engine:
VIN:
Model
Brand: Model: Year:
from to fromot
2021 2021
Escalade
Escalade
ESV
Cadillac
2021 2021
Suburban
Tahoe
Chevrolet
2021 2021
Yukon
Yukon XL
GMC
United States, Canada, Mexico, Russia, Middle East, Chile (West), Colombia (West), Ecuador (West),
Peru (West), Japan, Cadillac Korea (South Korea), Thailand (ASEAN)
Involved Region or Country
Additional Options (RPOs) Equipped with RPO UVZ
Some customers may comment on a DIC message stating Service Driver Assist on display.
Condition Technicians may find DTC U3000 49 (Control Module Internal Malfunction) set current or in recent
history
The cause of the condition may be an issue with the SRR setting the DTC due to highly reflective
environments. Some temporary faults that trigger DTC 3000.49 are detected while radar is actively Cause
radiating. There may also be an issue with the X270 headliner harness to instrument panel harness
having loose terminals
Reprogram the SRR with the latest calibrations and verify concern is fixed.
Correction Note: If concern is still present, verify the terminals on the X270 harness are secure and proceed with
repair.
Service Procedure
Caution: Before downloading the update files, be sure the computer is connected to the internet through a network cable
(hardwired). DO NOT DOWNLOAD or install the files wirelessly. If there is an interruption during programming,
programming failure or control module damage may occur.
• Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector.
If there is an interruption during programming, programming failure or control module damage may occur.
• Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will
interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to
www.gmdesolutions.com[https://www.gmdesolutions.com] for further information. If not available, connect a fully
charged 12 V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
• Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power
(exterior lights, HVAC blower motor, etc) is off
• Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M)
system status indicators to NO.
Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu
and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming
System 2 (SPS2) for programming or reprogramming a module.
• For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before
reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC
application memory from a previous vehicle.
• If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not
match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top
center window and use these for programming or reprogramming the subject module with the correct vehicle VIN
and software and/or calibrations.
• The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also needs
to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.
• The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs
to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.
Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning
programming.
5743643
Important: If the vehicle VIN DOES NOT match, the message below will be shown
5877000
5644477
5431207
Important: Techline Connect and TIS2WEB screens shown above.
Important: If the same calibration/software warning is noted on the TLC or SPS Summary screen, select OK and follow
screen instructions. After a successful programming event, the WCC is located in the Service Programming System
dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin.
1. Reprogram the Short Range Radar. Refer to B233LF Short Range Radar Sensor in SI.
5644478
5431209
Note: The screenshots above are an example of module programming and may not be indicative of the specific
module that is being programmed. Module selection and VIN information have been blacked out.
Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the
SPS Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of
the WCC on the SPS screen
2. Record SPS Warranty Claim Code on job card for warranty transaction submission.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada BaseWarranty coverage), use the following labor
operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor Operation Description Labor Time
*2888278 Reprogram Short Range Radar 0.3 hr
Add Check terminals on X270 connector 0.5 hr
*This is a unique Labor Operation for Bulletin use only.
Important: **To avoid warranty transaction rejections, carefully read and follow the instructions below:
• The Warranty Claim Code must be accurately entered in the “SPS Warranty Claim Code” field of the transaction.
• When more than one Warranty Claim Code is generated for a programming event, it is required to document all
Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the
“SPS Warranty Claim Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS/SPS2.
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS system as
follows:
1. Open TLC/TIS on the computer used to program the vehicle.
2. Select and start SPS/SPS2.
3. Select Settings.
4. Select the Warranty Claim Code tab.
The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is
retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code
field.
1
Version
Released November 01,
2021
Modified

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