Vehicle conditions of hard or no shift may be caused by a loose shift lever nut which allows the shift lever to cock and bind while shifting.
When servicing an HM-282 manual transmission shift lever component, inspect the square flats of the shift lever (135, Figure 1) for rounding. If worn, replace shift lever. Apply Loctite 242 removable threadlocker or equivalent to the shaft threads before torquing the shift lever nut to 70-95 N-m (52-70 ft. lbs.).
Use Labor Operation K1220 Lever, Shifter Shaft-Replace at .9 hour.
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.