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1990 Corvette: Service Bulletin: Competition Yellow Paint Comments About Color Changes

Subject: COMPETITION YELLOW PAINT COMMENTS ABOUT COLOR CHANGES
Model and Year: 1990 CORVETTE
Source: Chevrolet Service Bulletin
Bulletin Number: 90-306-10 - (07/13/1990)

TO: ALL CHEVROLET DEALERS

Condition:

Owners of some 1990 Corvettes painted Competition Yellow may comment that the color changes shades when exposed to direct sunlight.

Cause:

The primary pigment used in this color is photochromatic. This means the color becomes darker and greener when exposed to sunlight, when removed from sunlight the condition reverses itself within 48 hours.

Correction:

This condition is normal and no correction should be attempted. Should it become necessary to make paint repairs to this color, the vehicle should be removed from the direct sunlight for at least 48 hours before a match is made.

Dupont will provide matching repair color which may be ordered using the following description:

B9058KK GM Code 53 WA9804 Competition Yellow B/C

Use of other suppliers products should be checked with the manufacturer to insure pigment formulas are the same. "We believe this source and their equipment to be reliable. There may be additional manufacturers of such equipment. General Motors does not endorse, indicate any preference for or assume any responsibility for the product or equipment from this firm or for any such items which may be available from other sources."

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.

© Copyright General Motors Corporation. All Rights Reserved

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