Cadillac bulletin PIC6520
What it saysThis Preliminary information communicates the direction a technician needs to take when customer concern is loud noise in cabin. NHTSA’s full summary ↓
Cadillac filed this with NHTSA as a service bulletin dated Oct 2, 2023, received Dec 4, 2023, about the back over prevention. It names 1 model year (2024). 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 the direction a technician needs to take when customer concern is loud noise in cabin.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIC6520 | Service bulletin | Oct 2, 2023 | 10245978 | not found |
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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A weekly email, sent only in a week when Cadillac files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 31 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 back over prevention
Source: same model, same component group5 other manufacturer communications filed against the Cadillac XT4 under the same component group (back over prevention), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25-NA-081 | Service bulletin | Mar 31, 2025 | Some customers may comment on the park assist switch flashing and/or a ‘Service Side Detection’ DIC message. |
| N23-G170AA | Service bulletin | Dec 4, 2023 | ⢠This update contains a required software change to help improve the overall software update and diagnostics process. ⢠Be sure to in… |
| PIC6520A | Service bulletin | Oct 23, 2023 | This Preliminary information communicates the direction a technician needs to take when customer concern is loud noise in cabin. |
| PIT6047B | Service bulletin | Aug 17, 2023 | This Preliminary information communicates to dealership technicians to create a USB file that will have the radio ignore the BCM message for… |
| PIT6018C | Service bulletin | Aug 8, 2023 | This Preliminary information communicates the possibility of a resetting of some information modules prior to delivery. |
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 PIC6520 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 PIC6520 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.
Which vehicles does PIC6520 cover?
The manufacturer filed it against 1 model year: 2024 Cadillac XT4. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.