GM Service Manual Online
For 1990-2009 cars only

VERTICLE SEAT MOTION 'ROCKING' ADJUSTER

MODELS AFFECTED: 1987-1988 ALLANTES

Some 1987 and 1988 Allantes built before 1988 VIN breakpoint 102078 may experience a condition of seat rocking on the adjuster. This condition may be caused by more than normal vertical movement of adjuster components.

To repair this condition, replace the seat adjuster assembly, complete with motors, with new reinforced adjusters, P/N 1648664 (passenger) and 1648665 (driver). Follow the procedures outlined in Section 10-9 of the Allante Service Information Manual for seat assembly and seat track replacement.

For warranty purposes use Labor Operation C6040 at .7 hour for the passenger seat or C6041 at .7 hour for the driver seat with trouble code 27 - loose.

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.