PIP5896

Bulletin No.: PIP5896
Published date: 01/6/2023
Preliminary Information
PIP5896 Service Engine Soon Light/Message with DTCs P1967 or
P1968 in the TCM
Models
Brand:
Chevrolet
Model:
Corvette
VIN:
Model Years:
2023
from
All
Engine:
to
All
All
Transmissions:
M1L, M1M
Involved Region or Country North America
Condition
Service engine tell-tale or message with stored TCM DTCs or P1967 and or P1968
Cause
TCM Software anomaly
Some customers may comment on a service engine telltale, reduced engine power message
with no noticeable performance issues.
When scanning the vehicle for DTCs the technician may find P0700 stored in the ECM and
P1967 or P1968 stored in the TCM.
If there are other DTC in the TCM diagnose those first as per service information.
If only DTCs P1967 or P1968 are set, it may be caused by a software anomaly and revised
TCM software is scheduled for release in the first quarter of 2023.
Until then Clear the DTC and perform transmission diagnostic service test.
If transmission diagnostic service test passes that would indicate the trans is fine and no
further repairs should be attempted.
When the software is available it will go to the vehicle as part of an Over the Air update.
TCM should not be replaced for P1967 or P1968.
Warranty Information
For vehicles repaired under the Powertrain coverage, use the following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH) for coverage information.
Labor Operation
Description
Labor Time
8468822
Transmission Service Diagnostic Test
Use Published Labor Time
Version History
Version
Modi ed
1
01/06/2023 - Created on.
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