When installing wheel nuts, use the following torque specification and tighten in the proper sequence shown on page 3E-5 of the 1991 Century Service Manual.
Wheel nut torque shown on pages 3E-5 and 10 should be 140 N.m (100 lbs. ft.)
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.