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Service bulletin PIT6309

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 id11012026
Published by NHTSA2024-12-20
Manufacturer's numberPIT6309
Manufacturer's date2024-12-18
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

This 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.

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

Vehicles listed
CADILLAC XT62024, 2025

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-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
05-06-04-022V2024-09-05. Service bulletin. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
16-NA-3832024-07-16. Service bulletin. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
04-06-04-051I2024-07-16. Service bulletin. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
22-NA-1932024-06-24. Service bulletin. This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
N2324338912024-05-16. Service campaign. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
N2324338902024-05-16. Service campaign. Customer Satisfaction Program - Various vehicle makes and models listed may have a condition in which the transmission case leaks fluid due to porosity around a mount bolt hole. Dealers will replace the transmission case.
PIP5863B2024-04-15. Service bulletin. This Preliminary information communicates to dealers? information related to a Malfunction Indicator Lamp (MIL) Illuminated due to a U0672 setting. Advises the technician to perform Electric Engine Coolant Pump connection inspections. To clear the code to see if it resets current. If the code resets it advises to utilize Strategy Based Diagnosis. If the code does not reset, it advises to release the vehicle to the customer and that GM is aware of this issue.
N2424388502024-04-11. Service bulletin. Emission Recall - General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles equipped with a 3.6L engine. The joint that connects the high-pressure fuel pump’s outlet pipe to the pump may not have been welded within specified tolerances during the pump supplier’s manufacturing process. There is a potential that this weld joint is outside the tolerances that have been validated for the long-term durability of this pipe connection. Dealers are to replace the high-pressure fuel pump
22-NA-0572024-03-28. Service bulletin. This technical bulletin provides a procedure replace the tappet that is located on the fuel door.