Beginning in October 1982, some bolt torque specifications were revised or updated for the subject transmission. These changes are shown in the chart below:
BOLT NAME OLD TORQUE SPEC. NEW TORQUE SPEC. Oil Pan to Case Bolt 24N.m. (18 ft. lb.) 16N.m. (12 ft. lb.) Hsg. to Case 31N.m. (23 ft. lb.) 34N.m. (26 ft. lb.) *1/4-18 NPTF Pipe Plug 24N.m. (18 ft. lb.)
*This is a new (larger) pressure plug being used in the 2nd, 3rd and 4th clutch pressure taps. The smaller plug (1/8-27 NPTF) used in the past for these taps and currently used in the line pressure tap remains at 11 N.m. (8 ft. lb.).
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.