For 1990-2009 cars

# REMOVAL OF CHEMICAL SPOTTING AND MINOR PAINT IMPERFECTIONS

#### MODELS AFFECTED: 1985-1988 DE VILLES AND FLEETWOODS 1986-1988 ELDORADOS AND SEVILLES

This bulletin supersedes bulletin T-85-62, Group 10 which should be destroyed.

Some 1985-1988 DeVilles and Fleetwoods, and 1986-1988 Eldorados and Sevilles may experience a condition of small etched spots on the horizontal surface of the paint finish clear coat.

This condition is chemical spotting and may be caused by industrial fallout (acid rain).

Chemical spotting along with other minor paint imperfections on base coat/clear coat finishes, such as sand scratches, dirt in paint, sags and orange peel can be repaired without paint application. Examples of these imperfections are shown in Figure 1.

To repair these conditions use the following procedure:

1. Wash the subject panel with water to remove any foreign material such as dirt, grit, etc.

2. Wet sand subject panel with 3M Micro-fine 1500 grit sandpaper, P/N 02023 or equivalent. Wrap the sandpaper around a 3M rubber sponge back-up pad, P/N 005530, so not to leave finger marks in the clear coat. NOTE: Always sand the length of the panel and use a mild dish soap detergent in the wet sand operation for sandpaper lubricant.

3. Wheel compound sanded panel with 3M Finesse-itII, P/N 05928, polishing compound and 3M Super Buff Polishing Pad, P/N 05705 or equivalent.

4. To remove any swirl marks left in the clear coat during wheel compounding operation, follow steps 1 through 6 in Serviceman Bulletin T-87-122 using the non-directional dual action (D.A.) orbital sander motor. Also, use the 3M Finesse-it II P/N rather than P/N 13084 listed in the bulletin.

#### CAUTION:

Buffing wheels are not recommended for routine new car pre-delivery preparation of base coat/clear coat finishes.

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.