Cadillac bulletin PIT6312
What it saysThis Preliminary information communicates a vehicle may be encountered with a service high voltage message. NHTSA’s full summary ↓
Cadillac filed this with NHTSA as a service bulletin dated Dec 20, 2024, received Jan 3, 2025, about the fuel/propulsion system. It names 1 model year (2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis 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.
Trouble codes it names: P0CCD all 1 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6312 | Service bulletin | Dec 20, 2024 | 11012255 | PDF, 25 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 13 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the fuel/propulsion system
Source: same model, same component group4 other manufacturer communications filed against the Cadillac Optiq under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| PIE0753H | Service bulletin | Feb 27, 2025 | This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in… |
| PIE0753G | Service bulletin | Jan 22, 2025 | This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in… |
| PIT6319 | Service bulletin | Jan 16, 2025 | This Preliminary information communicates that a customer may experience a service high voltage message with a loss of heat. The technician… |
| PIP6009B | Service bulletin | Dec 16, 2024 | This Preliminary information communicates the request that engineering it looking to get data from these vehicles before any work is being p… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Cadillac PIT6312 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the PIT6312 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every GM warranty extension on file lists the ones GM has filed.
Which vehicles does PIT6312 cover?
The manufacturer filed it against 1 model year: 2025 Cadillac Optiq. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.