NHTSA ID Number: 10182554
Manufacturer Communication Number: PIP5675F
TSB/Document Date: 2020-11-16
Summary
This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.?
Bulletin No.: PIP5675F
Published date: N/A
Preliminary Information
PIP5675F MIL illuminated with DTC P1098 and/or P26BB
Models
Brand:
Model:
VIN:
Model Years:
from
to
Transmissions:
Encore GX
2020
All
All
1.3 L3T
All
CT4 CT4-V
2020
All
All
2.0 LSY and 2.7 L3B
All
CT5
2020
All
All
2.0 LSY
All
XT4
2019 - 2020
All
All
2.0L LSY
All
XT5
2020
All
All
2.0 LSY
All
Blazer
2020
All
All
2.0 LSY
All
Trailblazer
2021
All
All
1.3 L3T
All
Acadia
2020
All
All
2.0 LSY
All
Involved Region or
Country
North America
Some customers may comment that the MIL light is illuminated. The technician may nd P1098 and/or P26BB set current or
history.
This may be caused by a software anomaly, GM is currently looking into the issue.
Condition
Cause
Correction:
Note: For 2019MY vehicles equipped with the 2.0L LSY refer to 19-NA-022 first, to verify the vehicle has the most current
level of software
Note: For 2019MY and 2020MY Chevrolet
Silverado or GMC Sierra vehicles equipped with the 2.7L L3B, refer to 20-NA-100.
Check VIN history to determine if one or both of these codes have previously set in the ECM.
If the vehicle has set either code previously, replace the Coolant Flow Control Valve.
If the vehicle has not set either code previously, perform the latest SI diagnostic for the code.
If the SI diagnostic fails to isolate the root cause, do not replace the Coolant Flow Control Valve.
Clear any codes and return the vehicle to the customer.
If either code is set current, and the SI diagnostic isolates the root cause to the Coolant Flow Control Valve, replace the valve
and perform the scan tool control function: Engine Coolant Control Valve Mode.
The value should increase and decrease according to the command in the scan tool.
Clear any codes and return the vehicle to the customer.
In the event that the customer returns with either DTC set a second time, replace the valve and perform the scan tool control
function: Engine Coolant Control Valve Mode.
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
4087438
Complete published diagnostics and clear DTC's
*This is a unique Labor Operation for Bulletin use only.
Labor Time
0.4 Hr.
Version History
Version
Modi ed
6
09/10/2019 - Created on.
01/17/2020 updated to include reference to 19-NA-022.
03/16/2020- Updated to include additional vehicle model.
04/07/2020- Updated to include additional vehicle platforms equipped with 1.3 L3T engine.
05/20/2020 Updated to include unique labor operation.
06/24/2020 Updated to remove 2019 and 2020 MY Chevrolet Silverado and GMC Sierra vehicles and to add note to
refer to 20-NA-100.
10/14/2020 -Corrected engine displacement in red note section to 2.7L.
© 2020 General Motors. All Rights Reserved.
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TSB/Document ID: PIP5675F
Replacement Service Bulletin Number:
MFR Communication Date: 2020-10-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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