Cadillac bulletin PIT6309
What it saysThis Preliminary information communicates that a customer may come to the dealer with a rattling or clicking type noise coming from the rear of the vehicle when the engine is idling. NHTSA’s full summary ↓
Cadillac filed this with NHTSA as a service bulletin dated Dec 18, 2024, received Dec 20, 2024, about the fuel/propulsion system. It names 2 model years (2024–2025). 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 that a customer may come to the dealer with a rattling or clicking type noise coming from the rear of the vehicle when the engine is idling. The tech is directed to see if the noise is coming from the fuel tank and if it is to advise the customer that engineering is working on the development of a repair.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| PIT6309 | Service bulletin | Dec 18, 2024 | 11012026 | 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 2 model years this bulletin names have filed 23 complaints with NHTSA since 2015. 1 of them name Fuel/Propulsion System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
During a cross- country trip, we had driven more than 300 miles, but the fuel gage indicated full, the Fuel Range Indicator showed a 688-mile range available in the tank which is much more than a 2025 Cadillac XT6 should indicate. The fuel gage indicated full even though it was not.
2025 Cadillac XT6 · Fuel/Propulsion System · filed with NHTSA Jul 14, 2025 · ODI 11673491
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 group8 other manufacturer communications filed against the Cadillac XT6 under the same component group (fuel/propulsion system), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| N252516900-01 | Emissions | Feb 19, 2026 | Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition whi… |
| N252516900 | Emissions | Feb 5, 2026 | Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition whi… |
| 24-NA-139 | Service bulletin | Apr 12, 2025 | This bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Loss of Power, Fue… |
| 05-06-04-022V | Service bulletin | Aug 7, 2024 | This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are… |
| 04-06-04-051I | Service bulletin | Jun 29, 2024 | This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive. |
| N242438850 | Service bulletin | Apr 11, 2024 | Emission Recall - General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles equipped with a 3.6L engine.… |
| PIP5824C | Service bulletin | Jan 8, 2024 | This Preliminary information communicates a possible issue with the active fuel management rockers causing a misfire and the correction for… |
| PIP4964E | Service bulletin | Oct 16, 2023 | This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction… |
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 PIT6309 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 PIT6309 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 PIT6309 cover?
The manufacturer filed it against 2 model years: 2025 Cadillac XT6, 2024 Cadillac XT6. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.