This service bulletin replaces Figure 79 in Engine Mechanical - 1.6L L4 VIN Code 6 (Section 6A1) of the 1993 Geo Prizm Service Manual (ST373-93).
When installing the main bearing caps, tighten the main cap bolts, in three passes and following the sequence illustrated in Figure 1, to 60 N.m (44 Lb. 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.