THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 89-278-10, DATED NOVEMBER 1989. THE 1990-91 MODEL YEARS HAVE BEEN ADDED AS WELL AS OTHER PERTINENT INFORMATION. ALL COPIES OF 89-278-10 SHOULD BE DISCARDED. Some 1991 model "F" cars may be equipped with T-Top panels made of a new Acrylic plastic rather than glass. The following vehicles as well as all 1991 vehicles after VIN 136797 will use the new Acrylic top.
123829 124142 124144 124147 124148 124149 124151 124152 124153 124154 124157 124160 124181 124183 124194 124197 124198 124199 124203 124259 124266 124270 124274
GMSPO will continue to carry replacement glass panels, as well as replacements for the new Acrylic tops. The new Acrylic T-Top panel part numbers are as follows:
Right side: 12505684 Left side: 12505685
Parts are currently available from GMSPO.
Some 1989 models were built with Acrylic tops and some were built with glass tops. All of the 1990 models were built with glass tops. If replacement of a 1989, 1990 or 1991 model T-Top panel is necessary, replace it with the same "type" panel as there are slight appearance differences between the glass and Acrylic panels.
While the new Acrylic panels have a special hard coating to resist scratching, they still require special care when removed for stowage or cleaning.
- Flush off dust and dirt with water and then dry.
- Clean panel with GM #1050427 or equivalent. Allow cleaner to remain on panel for about one minute, then wipe dry with a soft lint-free cloth
- DO NOT USE ABRASIVE CLEANERS
Use applicable labor operations and times.
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.