Power Steering - Low Speed Shudder Condition

91buick02

Bulletin: 91-3-7

Date: Mar. '91

Ref. No.: 91-112-3

Corp. Ref. No.: 033207


SUBJECT: POWER STEERING SHUDDER (INLET HOSE AND PIPE ASSEMBLY REPLACEMENT)

MODELS AFFECTED: 1988-89 REGALS WITH 2.8L ENGINE (VIN CODE W) 1989-91 REGALS WITH 3.1L ENGINE (VIN CODE T)


CONDITION:

Some 1988-91 Regals with 2.8L (VIN Code W) or 3.1L (VIN Code T) V-6 engines assembled prior to VIN M1829387 may exhibit a slight power steering shudder condition noted during static or low speed turning maneuvers. This condition may be perceived as a disturbance felt and heard by the vehicle operator through the body structure and steering wheel.

CAUSE:

A combination of power steering pump pressure pulses and engine firing frequency generating a disturbance transmitted through the body structure.

CORRECTION:

Replace the existing power steering inlet (pressure) hose and pipe assembly with new assembly noted below by model year, with internal tuning cable and high expansion hose material.

1988-90 1991

P/N 26025653 P/N 26026921

Parts are currently available from GMSPO.

WARRANTY INFORMATION:

Labor Operation Number: E8622
Labor Time: .8 hours