WenmarOpen by Wenmar Pro

Service bulletin 10001

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 id601769
Published by NHTSA1998-08-24
Manufacturer's number10001
Manufacturer's date1998-04-01
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

INFORMATION ON GROWLING NOISE IN TRANSAXLE DURING FIRST FOUR MINUTES AFTER START UP. *YC

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, Axle

Vehicles listed
BUICK CENTURY1997, 1998
BUICK LESABRE1992, 1993, 1994, 1995, 1996, 1997, 1998
BUICK PARK AVENUE1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
BUICK REGAL1993, 1994, 1995, 1996, 1997, 1998
BUICK RIVIERA1992, 1993
BUICK RIVIERA1994
BUICK RIVIERA1995, 1996, 1997, 1998

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
990730030A2001-05-24. Service bulletin. OWNERS OF SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60, 4T60-E OR 4T65-E TRANSAXLES MAY COMMENT ON A GRINDING AND / OR GROWLING NOISE THAT IS NOTICEABLE WHEN STANDING IN PARK ON A HILL OR SLOPE WITH THE ENGINE RUNNING AND THE PARKING BRAKE NOT APPLIED. *TT
9907300302000-03-01. Service bulletin. SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60 OR 4T60-E TRANSXALES MAY COMMENT ON A GRINDING AND / OR GROWLING NOISE THAT IS NOTICEABLE WHEN IN PARK ON INCLINE. *TT
9907300071999-09-21. Service bulletin. VEHICLES WITH HYDRA-MATIC TRANSAXLE MAY EXHIBIT VEHICLE SHUDDER WHEN REAPPLYING THROTTLE (GREATER THAN 50%) AFTER STOPPING. *TT
98777155A1998-06-24. Service bulletin. EXPERIENCING A TRANSAXLE GEAR WHINE NOISE ON COAST DOWN OR LIGHT ACCELERATION BETWEEN 20 AND 40 MPH. *YC