Bonneville V6-231 3.8L VIN 3 SFI (1988)
Power Steering Pump: All Technical Service Bulletins
Power Steering - Pump Noise & Increased Steering Effort
Bulletin Number:
88-3-15
Reference Number:
803201
Publish Date:
3/88
Subject:
POWER STEERING PUMP NOISE AND INCREASED STEERING EFFORT
Models
Affected:
1987-88 BONNEVILLE
In the interest of reducing the level of power steering noise on Bonneville, Pontiac has released new power steering pumps. The new pump assemblies
have a modified reservoir, which is released in a new service kit. The new service kit may be used on customers vehicles that experience power steering
fluid aeration during turning maneuvers. This condition is first identified as an increase in pump noise during turning maneuvers, typically on aggressive
or long duration turns. This service kit and flow valve are to be used ONLY after it has been determined that no power steering system leaks exist, and
that the power steering system has been purged of all air, as described:
1.
Raise the front of vehicle until the front wheels are off the ground.
2.
Make sure power steering reservoir is filled with power steering fluid to the proper level.
3.
With the engine turned off (not running), slowly turn the steering wheel from lock to lock.
4.
Have an observer watch the fluid in the reservoir as the steering wheel is being turned. Continue turning steering wheel until air bubbles are no
longer seen rising from the fluid.
The old and new part numbers for 1988 service kit and flow valve are as follows:
1987-88
Old
Old
New
New
Old
Reservoir
Flow
New
Reservoir
Flow
Engine
Pump
Kit
Valve
Pump
Kit
Valve
LG3 (3.8L)
7848115
7849244
7841467
26010000
26009846
7840203
1988
LN3 (3800)
26004881
7849244
7841467
26012287
26009846 7840203
