THE 2-4 SERVO PIN SELECTION CHART SHOWN IN SECTION 700-R4 OF THE APPROPRIATE 1982 SHOP MANUAL HAS BEEN REVISED. THE SUBJECT PIN IDENTIFIED BY ONE (1) RING HAS BEEN CANCELLED AND THE TOLERANCE HAS BEEN INCREASED ON THE REMAINING PINS. (SEE FIGURE 2.) TO UPDATE YOUR SHOP MANUAL COPY, PLACE FIGURE 2 OVER FIGURES 5 AND 6 ON PAGE 700-R4-9 IN THE SHOP MANUAL. PLEASE BE AWARE THAT THE PIN LENGTH REFERRED TO IN FIGURE 2 IS THE EFFECTIVE LENGTH MEASURED FROM THE SHOULDER AT THE CENTER OF THE PIN TO THE ROUNDED NOSE.
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.