PIT5832K

Bulletin No.: PIT5832K
Published date: 11/14/2023
Preliminary Information
PIT5832K Diagnostic Tip: Unable to complete the Serial Data
Authentication Con guration/ No Start Or Unable To Perform Theft
Relearn After Replacing Or Programming A Module / DTC U1962
Models
Brand:
Buick
Model:
Envision
Model Years:
VIN:
from to
Engine: Transmissions:
2021 - 2023
All
All All
All
Brightdrop EV600
2022
All
All All
All
Cadillac
CT4
2020 - 2024
All
All All
All
Cadillac
CT5
2020 - 2024
All
All All
All
Cadillac
Escalade Models
2021 - 2024
All
All All
All
Cadillac
LYRIQ
2023 - 2024
All
All All
All
Cadillac
XT4
2024
All
All All
All
Chevrolet
Blazer EV
2024
All
All All
All
Chevrolet
Colorado
2023
All
All All
All
Chevrolet
Corvette
2020 - 2024
All
All All
All
Chevrolet
Silverado 1500 New (RPO J22, VIN Digit 12 = A or D) 2022
All
All All
All
Chevrolet
Silverado 1500
2023 - 2024
All
All All
All
Chevrolet
Silverado 2500HD/3500HD
2024
All
All All
All
Chevrolet
Suburban
2021 - 2024
All
All All
All
Chevrolet
Tahoe
2021 - 2024
All
All All
All
GMC
Canyon
2023
All
All All
All
GMC
HUMMER EV
2022 - 2024
All
All All
All
GMC
HUMMER EV SUV
2024
All
All All
All
GMC
Sierra 1500 New (RPO J22, VIN Digit 12 = A or D)
2022
All
All All
All
GMC
Sierra 1500
2023 - 2024
All
All All
All
GMC
Sierra 2500HD/3500HD
2024
All
All All
All
GMC
Yukon Models
2021 - 2024
All
All All
All
North America, Europe, Kazakhstan, Uzbekistan, Russia, Middle East, Israel, Palestine,
Involved Region or Country Argentina, Brazil, Bolivia, Chile, Columbia, Ecuador, Paraguay, Peru, Uruguay, Japan, S.
Korea, Thailand, Australia/New Zealand, Other Africa
Condition
Some technicians may experience one or more of the following concerns after
replacing or reprogramming a module on one of the new Vehicle Intelligence
Platforms. or VIP Vehicles.
1. Unable to complete the Serial Data Authentication Con guration
2. DTC: U1962 set current in ANY Module
3. No Start
4. Invalid Data codes with certain modules even through you can still review the
data with GDS2
5. Unable to perform a theft relearn or learn remotes back to the vehicle
6. Unable to perform Module setup or learn
7. AIrbag Indicator may illuminate.
8. You may also notice that the VIN number will not self-populate in GDS2
The Serial Data Authentication Con guration procedure runs automatically as part of
the programming procedure.
Cause
The Serial Data Authentication Con guration is a security handshake between all the
modules on the vehicle. One of the main indicators the Serial Data Authentication
Con guration did not complete properly is DTC: U1962 is current in one or more
modules.
See Example below:
Correction:
The dealer will need to perform the Serial Data Authentication Con guration (SDAC) following Instructions in SI using
Document ID: 5404959. Be sure the vehicle is Power Moded to the OFF position before running the Serial Data
Authentication Con guration procedure.
If a vehicle will not complete the Serial Data Authentication Con guration (SDAC) after updating or replacing a
module, please perform the following:
1. If a module was replaced, make sure the new module was SPS programmed correctly or the SDAC will fail and
not complete correctly.
2. If a module such as the BCM is replaced, and the immobilizer learn needs to be completed after replacement,
the tech needs to make sure that the SDAC completes correctly, or a pop-up message like the one below will
be displayed:
3. If a vehicle will not complete the SDAC, run the SDAC (using the Serial Data Authentication selection in Techline
Connect) again. Select the box in SPS controller list in the lower right-hand corner labeled "Serial Data
Authentication Con guration".
4. The SDAC will run up to 3 times before it fails. When it fails, there should be a pop box that shows up on the
screen like the one below. Check and record the items listed under System and ECU. If the system box reads
"Server" then the issue is related to the SPS system server or internet connection and not related to the
vehicle. Attempt the SDAC again at a later time or the next day early in the morning. ( If the box doesn't read
"Server" continue to step 5 )
NOTE: Be patient because it can take a few moments for it to actually pop-up box to
appear or sometimes you may have to rerun the SDAC again for it to pop-up
5. If the system box reads "ECU", then the Global ID of the module that is causing the concern should be able
to be obtained. In the example below, the Global ID is listed as K36, which is for the SDM. The module's name
can be found by looking at the global codes listed under "Control Module References" document in SI for the
vehicle that is being working on.
6. Sometimes the pop-up box will read "ECU" but it will not give you a Module ID in the ECU box. In this case,
the servicing dealer will have to contact Techline support and they will have to assist by getting a SPS log le
from the dealership's system. If this is the case, they must be contacted right after the SDAC failure. If any
other programming is attempted before contacting Techline, then the SPS log will be erased.
7. Once the module that caused the concern has been identi ed, attempt to SPS program the module if a
update is available and then attempt to run the SDAC again.
8. If the vehicle is repaired, you may release to the customer. If the SDAC still fails, Continue to step 9
9. Pull the fuse that supplies battery power to that module. Sometimes the fuse is a three-prong fuse that
feeds other modules. In this case, the servicing technician will need to nd a two-prong fuse to power the
other module that was not involved in the SDAC failure.
10. If the SDAC completes after removing battery power from the module in question, that module will need to
be replaced.
11. Replace the e ected module before releasing the vehicle to the customer and verify that the SDAC
completes after SPS programming of the new module.
Additional SI Keywords
U1960 U1961 U3034 U3035
Version History
Version
11
Modi ed
04/06/2021 - Created on.
01/26/2022 - Update to add models and model years and to add to diagnosis.
08/29/2022- Update to add Truck models with VIP communications.
09/29/2022- Update PI to x model descriptions for Pick up models.
11/18/2022- Update PI to make changes to steps 4 and add steps.
01/31/2023- Update to change title to make PI easier to nd and add 2023 truck
models.
02/16/2023- Update to add 2023 Cadillac LYRIQ.
03/06/2023- Update to add Brightdrop EV600 Model.
05/11/2023- Update to add Hummer SUV and Canyon/Colorado models.
08/30/2023- Update to add 2024 models years and add Blazer EV and 2024
Silverado and Sierra HD models.
11/14/2023- Update to add models and model years and also add export
countries per Brand Quality.
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