VIB. OR SHUDDER 0-10 MPH MODERATE ACCELERATION

MODELS AFFECTED: 1986 LESABRES

NOTICE: This bulletin supersedes Bulletin 86-6-9 dated April, 1986. Please discard 86-6-9 and replace with this revision which provides an additional bracket part number necessary to make this repair.

If a vibration or shudder on acceleration from 1-10 mph occurs on some of the above vehicles, the right rear engine mount and brackets should be loosened to relieve any stress situation in this area that may have been introduced at the time of assembly. If movement occurs when loosened,the mount and brackets should be retightened and the car road tested to see if the vibration still exists. If it does, installation of the following mount and brackets will greatly reduce the vibration:

Mount 14074042 Bracket, To Frame 14074044 Bracket, To Transaxle 22517145

WARRANTY INFORMATION

Operation Number: K6723 Labor Time: .5 Hour Trouble Code: 92

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.