POWER RACK & PINION STEERING GEAR FLUID LEAK

A number of changes to the end take off steering gear have been made during the 1989 model year to address external leaks. These changes are detailed below:

A new high temperature inner rack seal was introduced in January, 1989.

Enhanced assembly installation of the outer bulk head seals to reduce seal damage was implemented in March, 1989.

Drive screw sealing method changed in May, 1989 to reduce possibility of water entry in seal areas.

Redesigned boot clamps for enhanced sealing at gear in November, 1988 to reduce possibility of water entry in seal areas.

Improved rack surface finish in seal areas to reduce leak potential.

Saginaw Division and its vendors are involved in various ongoing quality enhancement programs.

How To Address Fluid Leaks:

If a customer has commented about having to add fluid and/or external leakage of power steering fluid and there is fluid in the boot(s), then the steering gear should be replaced. If fluid has not accumulated in the boot, other causes for the leakage must be determined and corrected. Other causes to check for are:

Hoses and connections for proper routing, assembly, and torque. Rotary valve seal for leaks. Pump and/or reservoir areas for leaks. Gear housing for porosity.

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.