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Service bulletin PIT6312

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11012255
Published by NHTSA2025-01-03
Manufacturer's numberPIT6312
Manufacturer's date2024-12-20
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

This Preliminary information communicates a vehicle may be encountered with a service high voltage message. On inspection P00CD will be found by the technician. The tech is advised to let the customer know that this will not cause any driveability or charging concerns and that engineering is working on a resolution.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Fuel system

Trouble codes named

P00CD

Vehicles listed
CADILLAC OPTIQ2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
25-NA-0442025-10-27. Service bulletin. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
24-NA-2022025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
23-NA-1512025-10-02. Service bulletin. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
PIE0753I2025-09-30. Service bulletin. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
22-NA-0832025-09-27. Service bulletin. This service bulletin provides Requirements for Replacement of the Dual Mode Cord Set Under Warranty.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
24-NA-1432025-06-18. Service bulletin. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
23-NA-1512025-05-06. Service bulletin. This service bulletin and criteria within are to determine the internal state of the High Voltage Battery and core return shipping method.
24-NA-1432025-04-28. Service bulletin. This service bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.