Service bulletin 11-07-30-001

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)
Type	Service bulletin
NHTSA id	10038286
Published by NHTSA	2011-06-14
Manufacturer's number	11-07-30-001
Manufacturer's date	2011-02-01
NHTSA component	POWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

GM: THERE IS A DELAYED TRANSMISSION WHEN SELECTING DRIVE OR REVERSE. 2011 BUICK REGAL. *RM

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Automatic transmission

Vehicles listed
BUICK REGAL	2011

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

Recalls for the same vehicles and component
16V502000	2016-07-05. ELECTRICAL SYSTEM:IGNITION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
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990420002L	2021-08-09. Service bulletin. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
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150089004C	2021-03-08. Service bulletin. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
060089031F	2020-12-21. Service bulletin. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
1308116001F	2020-12-07. Service bulletin. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
080730026F	2019-09-23. Service bulletin. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.