--------- Some 1990-91 F-cars may exhibit a crunch type noise coming from the front of the vehicle during full right or left turning maneuvers that is referred to as steering stop crunch.
----- Movement of lower control arm steering stop on steering knuckle during full turn type maneuvers generates crunch type noise.
---------- Apply a thin film (approximatly 1mm thick) of high temperature water resistant grease, P/N 12345996 50 ml (1.15 oz. tube) to the contacting surfaces of both the steering stops and steering knuckles as shown in illustration.
For vehicles repaired under warranty use Labour Time: .3 Hours
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.