In response to customer demands, a thicker wheel was introduced as standard equipment on all 1990 Toronado and Trofeos. This was done as a mid-year change. All vehicles produced with VIN sequence number 309062 or greater have a thick rim steering wheel.
In order for the steering system to accommodate this heavier steering wheel, the steering lines on all vehicles produced with VIN sequence number 309062 or greater include restrictors to limit power steering fluid flow and dampen movement of the steering wheel.
If steering wheel replacement is necessary, follow the instructions below when ordering parts.
For VIN sequence number 300000 to 309061, a thin rim steering wheel should be ordered. Once stock is depleted, the thicker rim steering wheel may be used if the steering cylinder lines are also changed to include restrictors.
For VIN sequence 309062 or greater, a thick rim steering wheel should be ordered and no steering line modifications need be done.
The chart on the back should be referenced when replacing a steering wheel.
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.