BUZZ CAUSED BY O-RINGS INFORMATION

IF A BUZZING NOISE IS ENCOUNTERED IN A 200-4R TRANSMISSION IN PART OR NEUTRAL CHECK TO MAKE SURE THERE ARE TWO "O" RINGS ON THE OIL FILLER INTAKE PIPE AND THE RINGS ARE NOT CUT OR DAMAGED. ALSO CHECK TO MAKE SURE THAT THE STOP VALVE, LOCATED IN THE CONVERTER CLUTCH APPLY VALVE, HAS NOT BECOME DISLODGED. (REFER TO JUNE SERVICE GUILD FOR A MORE DETAILED DESCRIPTION OF THE STOP VALVE).

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.