POWER STEERING SHUDDER REPLACE RETURN HOSE/PIPE ASSY

Subject: POWER STEERING SHUDDER

Model and Year: 1990-92 LUMINA (APV) WITH 3.1L ENGINE

Condition: Some 1990-1992 U-vans with 3.1 L V-6 engine (RPO LG6), 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 firing 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 indicated below with internal tuning cable.

Parts Required:

Part Description Part Number Quantity ---------------- ----------- -------- Power Steering Return Hose/ 26030907 1 Pipe Assembly

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

Parts Information:

Parts are currently available from GMSPO.

Warranty Information:

Labor Operation Number: E-8625 Use applicable labor time guide for labor hours.

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.