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1990 Corvette: Administrative Message: 1990 Corvette, Competition Yellow Paint Photosensitivity

The following notice was sent to all Chevrolet dealers on May 11, 1990.

**ADMINISTRATIVE MESSAGE     01-132

CREATED ON   05/11/90

TO:  ALL CHEVROLET DCS DEALERS

SUBJECT:  1990 CORVETTE, COMPETITION YELLOW PAINT PHOTOSENSITIVITY

THIS WILL ADVISE YOU OF A UNIQUE CONDITION INVOLVING THE 1990 CORVETTE WITH COLOR CODE 53, COMPETITION YELLOW PAINT.  THE PIGMENT USED TO FORMULATE THE YELLOW PAINT IS PHOTOSENSITIVE.  INCREASED SUNLIGHT CAUSES THE COLOR TO SHIFT TO A DARKER SHADE OF YELLOW AND REDUCED SUNLIGHT CAUSES THE COLOR TO SHIFT BACK TO A LIGHTER SHADE.  BECAUSE OF THIS CONDITION, PRODUCTION OF COMPETITION YELLOW HAS BEEN STOPPED.

THE CUSTOMER MAY NOT PERCEIVE THE GRADUAL SHIFT IN COLOR SHADE UNLESS ADJACENT AREAS OF THE VEHICLE RECEIVE DIFFERENT LEVELS OF SUNLIGHT.  FOR EXAMPLE, WHEN THE CONVERTIBLE TOP IS LOWERED THE AREA OF THE TONNEAU THAT HAS BEEN COVERED BY THE TOP WILL BE A LIGHTER SHADE OF YELLOW THAN THE AREA OF THE TONNEAU THAT HAS BEEN EXPOSED TO SUNLIGHT.  THIS SHADE DIFFERENCE WILL PROBABLY BE APPARENT.  THE DIFFERENCE WILL DISAPPEAR IN LESS THAN 24 HOURS IF THE ENTIRE TONNEAU RECEIVES THE SAME LEVEL OF SUNLIGHT.  THE SHIFT IN COLOR SHADE WILL CONTINUE TO OCCUR WITH CHANGES OF SUNLIGHT INTENSITY FOR THE LIFE OF THE VEHICLE.  THIS PHENOMENON IS NOT A DEFECT OR DURABILITY PROBLEM.

CHEVROLET WILL BE PROVIDING YOUR DEALERSHIP WITH A DISCLOSURE STATEMENT DOCUMENTING THE COLOR SHIFT CONDITION.  THIS DOCUMENT MUST BE PRESENTED TO AND SIGNED BY THE CUSTOMER AT THE TIME OF SALE OF ANY REMAINING CODE 53, YELLOW COMPETITION INVENTORY.

ADDITIONALLY, THE CHEVROLET CUSTOMER ASSISTANCE CENTER WILL BE CONTACTING ALL CURRENT OWNERS TO INFORM THEM OF THIS CONDITION.

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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