VEHICLE PULLS TO THE RIGHT POSSIBLE REMOVAL (COOLER PIPE)

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

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.