PIP5852B

Bulletin No.: PIP5852B
Published date: 03/3/2023
Preliminary Information
PIP5852B Service Engine Soon Light/Message with DTCs P0606 or
P0607 in the TCM
Models
Brand:
Chevrolet
Model:
Corvette
Model Years:
2020 - 2023
VIN:
from
All
Engine:
to
All
All
Transmissions:
M1L
Involved Region or Country North America, Europe, Middle East, Israel, Palestine, Japan, Thailand,
Australia/New Zealand
Service engine tell-tale or message with stored TCM DTCs or P0606 and or P0607
Condition
Cause
TCM Software anomaly
Some customers may comment on a service engine telltale, Service transmission message or
even a transmission hot message with or without a squealing noise immediately after
starting the engine. When scanning the vehicle for DTCs the technician may find P0700
stored in the ECM and P0606 OR P0607 stored in the TCM in history either by itself or with
other "P" Codes. This condition will be present on vehicle start up and NOT when the vehicle
is in motion.
The transmission hot message and possible noise are default actions of the DTC as the TCM
is in a defaulted state and may not be controlling line pressure and transmission may be
operating a max line pressure.
If the TCM has either the P0606 or P0607 set CURRENT by itself, continue with published
diagnostics in Service Information. The condition should be resolved by allowing the vehicle
to go through a complete sleep cycle (i.e. 15 minutes). This is something the customer can
complete if they experience the condition again before the correction is available.
If the TCM has either the P0606 or P0607 in HISTORY with other "P" DTCs (ie: P07E5 P07E6),
those codes are a byproduct of the controller state. DO NOT REPLACE THE TCM FOR A
P0606/P0607 WHEN OTHER "P" CODES ARE PRESENT or when the P0606/P0607 ARE IN
HISTORY. If the P0606/P0607 are in history, clear codes and test drive the vehicle to make
sure no DTCs return. If no DTCs return, return the vehicle to the customer and explain that
GM is currently investigating and developing a repair.
There is currently nothing to suggest this condition will present while the vehicle is moving,
the condition is entered during the engine start process. This PI will be updated when a
repair is available.
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
2888678
Description
Road Test Vehicle to Verify No Codes Return
Labor Time
.5 Hrs.
Version History
Version
Modi ed
3
06/09/2022 - Created on.
08/24/2022 - Updated to include 2023 model year.
03/03/2023 - To update involved countries/regions
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