For 1990-2009 cars

# POWER STEERING SHUDDER REPLACE RETURN HOSE/PIPE ASSY

#### SUBJECT: POWER STEERING SHUDDER (REPLACE RETURN HOSE/PIPE ASSEMBLY)

VEHICLES AFFECTED: 1990-92 CHEVROLET LUMINA APV, PONTIAC TRANSPORT, OLDSMOBILE SILHOUETTE WITH 3.1L ENGINE (VIN CODE D)

#### Condition:

--------- Some 1990-1992 U-vans with 3.1L 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 bodystructure 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.

For vehicles repaired under warranty use:

Labour Operation Number: E-8625 Labour Time: 0.5 Hrs.

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.