Corsica L4-134 2.2L (1991)
Power Steering Line/Hose: All Technical Service Bulletins
Steering Rack - Drift or Pull to the Right
Number:
91-440-3B
Section:
3B
Date:
NOV. 1991
Corporate Bulletin No.: 133504
ASE No.: A4
Subject:
LEAD/PULL TO THE RIGHT
Model and Year:
1991 CORSICA/BERETTA WITH 2.2L ENGINE
Condition:
Some 1991 "L" cars with the 2.2L (VIN G) may exhibit a condition of leading or pulling to the right that Dealer Service Bulletin No.
90-304-3B did not correct. In the cases where rotating front tires and adjusting camber to 2 degrees cross camber (+1 degree left, -1
degree right did not fix the lead or pull, the following symptoms may be present.
1. The steering wheel may feel noticeably "light" when turning to the right during parking lot maneuvers.
2. With the engine at idle and the steering wheel centered, the pressure between the pump and gear may be higher than normal (normal pressure is
typically under 100 psi).
3. Disconnecting the power steering system will cause the lead/pull to stop. (Note: The rack and pinion will not pull/lead to the right by itself while the
vehicle is on a hoist. This condition can only be found by road testing the vehicle). To disconnect the steering system, connect the gear inlet to the
gear outlet and the pump inlet to the pump outlet.
IMPORTANT:
All steps in Dealer Service Bulletin No. 90-304-3B, including front tire rotations, must be followed before attempting the repair
procedures outlined in this bulletin.
Cause:
Center take-off rack and pinion steering gears have an inherent right side slight lead/pull due to the rack rod located on only one side of
the piston.
Correction:
1. Check and replace all power steering lines that have restrictions or debris which may limit the steering fluid flow.
2. If no restrictions are found, remove the power steering cooler pipe to reduce the lead/pull.
REMOVE
22531884
Pipe Asm. - P/S Fluid Cooler
26006690
Hose Asm. - P/S Outlet (gear to cooler)
7808887
Hose Asm. - P/S Outlet (reservoir to cooler)
26013235
Hose Asm. - P/S Inlet
INSTALL
26025260
Hose Asm. - P/S Outlet (gear to reservoir)
26029284
Hose Asm. - P/S Inlet (high expansion rubber)
Parts are currently available from GMSPO.
NOTE:
The removal of cooler pipes may cause steering shudder. The inlet hose made of high expansion rubber is required to suppress shudder. Test
all vehicles for shudder after performing the repair described above. Please contact technical assistance if a vehicle with a high expansion hose
develops a shudder.
Labor Operation Number:
T1764
Labor Time
1.4 Hours
Add time:
0.1 Hours W/locking Wheel Covers/Nuts
