POWER STEERING SHUDDER REPLACE RETURN HOSE/PIPE ASSY

SUBJECT: POWER STEERING SHUDDER - REPLACE RETURN HOSE/PIPE ASSEMBLY

MODELS/YEARS: 1990-92 SILHOUETTE WITH 3.1L (VIN D) ENGINE

CONDITION: Some 1990-92 Silhouettes with 3.1L (VIN D) engine, may exhibit a slight power steering shudder condition noted during static or low speed turning maneuvers. This condition may be perceived by the vehicle operator as a disturbance felt and heard through the body structure and steering wheel.

CAUSE: A combination of power steering pump pressure pulses and engine fifing frequency generating a disturbance through the body structure.

CORRECTION: Replace the existing power steering return hose/pipe assembly (steering gear to cooler pipe) with new assembly containing an internal tuning cable (P/N 26030907). Parts are currently available from GMSPO.

Removal and installation procedures shown in the appropriate Service Manual Section, 3B (Power Steering Gear and Pump) must be followed to insure proper installation, bleeding and operation.

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.