Some 1987-1990 Allantes built before 1990 VIN breakpoints LU100450 (hard top) and LU127112 (soft top only) may experience a condition of the soft top difficult to latch in the rear. To repair this condition use the following service procedure:
1. Verify soft top hook contacts the pull down unit jaws correctly. Refer to Service bulletin T-90-43, Group 10. Adjust as required.
2. If latching effort is still excessive after proper hook adjustment, install a revised pull down unit, P/N 3526879. The revised pull down has 5mm of additional upward travel that will engage the hook into the pull down unit jaws sooner when latching the rear bow. Refer to the appropriate Service Information Manual, Section 10-9, for installation instructions.
Parts are currently available from GMSPO.
For warranty purposes use Labor Operation N3280 at .6 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.