PURPOSE: On all 1991 and 1992 Coupes built before, and The steering column sensor assembly (commonly called the handwheel sensor [HWS]) has been discontinued from production on 1992 Saturn SC Coupes built after, and including vehicle identification number (VIN) NZ148584. The steering column sensor assembly was installed only on the Coupe because it has a quicker steering ratio than the sedan (16:1 versus 18:1).
The steering column sensor was used to ensure proper power steering assist levels during performance maneuvers at highway speeds. The performance of the current Saturn power steering system (without the steering column sensor) provides the required steering assist levels under all driving conditions, eliminating the need for the steering column sensor.
On Coupes built after, and including VIN NZ148584 the "Handwheel Sensor" option in the powertrain control module (PCM) has been set to "NO" during production. When servicing these Coupes (i.e. PCM replacement), the "Handwheel Sensor" option must be set to "NO."
On all 1991 and 1992 Coupes built before, and including VIN NZ148583, perform service according to the procedures found in the Service Manuals.
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.