Lumina V6-3.8L VIN K (1998)
Power Steering Line/Hose: Customer Interest
P/S - Shudder/Vibration at Low Speed
File In Section: 02 - Steering
Bulletin No.: 99-02-32-001
Date: March, 1999
TECHNICAL
Subject:
Power Steering Shudder/Vibration at Low Speed
(Replace Power Steering Pressure Pipe/Hose Assembly)
Models:
1998-99 Chevrolet Lumina, Monte Carlo
Built Prior to VIN Breakpoint 132824 with 3.8L V-6 Engine (VIN K - RPO L36)
Condition
Some customers may comment on a shudder/vibration condition at low speeds during parking lot type steering maneuvers. This low frequency condition
can be felt in the steering wheel/body structure and is audible inside the vehicle's passenger compartment.
Cause
This condition may be caused by a mechanical vibration of the power steering gear rack, tie rods and tires that is reinforced by the hydraulic pressure
generated in the power steering system.
Correction
Replace the existing power steering pressure pipe/hose assembly with the new "tuned" pipe/hose assembly, P/N 26075972, using the following
procedure:
Service Procedure
1.
Siphon the power steering fluid from the reservoir.
2.
Raise the vehicle and suitably support.
3.
Position the jackstand under the rear cross-member of the frame/cradle assembly.
4.
Remove the rear two frame/cradle bolts and lower the assembly 25 mm (1 in).
5.
Remove the tie strap and unclip the oxygen sensor wiring harness from the power steering pressure pipe/hose assembly.
6.
Disconnect the pressure power steering pipe/hose assembly at the power steering pump.
7.
Disconnect the pressure power steering pipe/hose assembly at the power steering gear. Remove from the vehicle and discard.
