NHTSA ID Number: 10193442
Manufacturer Communication Number: PIC6433A
Summary
This Preliminary information communicates that a service theft deterrent message may display with no DTC’s. OnStar turned off the ECM read request to prevent re-occurrence.
2 Affected Products
Vehicles
Condition
A customer may comment that a Service Theft Deterrent message comes on intermittently. The issue may or may not be able to be duplicated. No current DTC’s will be found.
Cause
OnStar read request to ECM which causes the ECM to enter learn mode and turn on the message
Correction:
Note: Do not replace any parts or program any modules in an attempt to repair this concern.
OnStar has now cancelled the read request to prevent re-occurrence.
The vehicle can be returned to the customer. This will not affect the designed performance or reliability of the vehicle.
SEOCONTENT-START
Bulletin No.: PIC6433A Published date: 04/9/2021 Preliminary Information PIC6433A Intermittent Service Theft Deterrent Message Models Brand: Model: Model Years: VIN: Engine
: Transmissions
: from to Cadillac
CT4 2021 All All LSY All Cadillac
CT5 2021 All All LSY All Involved Region or Country North America Additional Options (RPO) LSY Condition A customer may comment that a Service Theft Deterrent message comes on intermittently. The issue may or may not be able to be duplicated. No current DTC’s will be found. Cause OnStar read request to ECM which causes the ECM to enter learn mode and turn on the message Correction: Note: Do not replace any parts or program any modules in an attempt to repair this concern. OnStar has now cancelled the read request to prevent re-occurrence. The vehicle can be returned to the customer. This will not affect the designed performance or reliability of the vehicle. Version History Version 2 Modified 03/12/2021 – Created on. 04/09/2021 – Updated Correction to state OnStar has cancelled the read request.
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1 Associated Document
Manufacturer Communications
Bulletin No.: PIC6433A
Published date: 04/9/2021
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