NEW CLEARCOAT (POLISH/CLEANING RECOMMENDATIONS)

Subject: NEW CLEARCOAT

Model and Year: 1993 CORVETTE

Starting in April, 1993, all Corvette models will use a new two component clearcoat.

This new clearcoat is significantly more resistant to environmental damage, and offers improved gloss retention. HOWEVER, while the new clearcoat is superior to previous materials, it may take up to 30 days to achieve ultimate hardness and mar resistance.

During this early period, the use of "aggressive" (brush type) automatic car wash equipment and polishing of the exterior surface prior to customer delivery should be avoided.

THE FINISH SHOULD NOT REQUIRE ANY POLISHING prior to delivery to the customer, however, if the finish does need polishing, it is important to follow the recommendations below:

- It's important that a "less is best" approach be taken if polishing is required (only do the minimum required to correct the damage).

- Only the correct materials or their equivalents should be used (See Chart).

- The correct power tool equipment and speeds should be observed (final process step should include an orbital type polisher with speeds of 1,500 to 2,000 R.P.M.).

3M

Recommended Repair Procedure

Paint Condition: New car prep or fine wheel marks.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Perfect It Foam Imperial Hand Pad (Glaze and Glaze Pad)

Paint Condition: Coarse swirl marks, chemical spotting, or light oxidation.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Finesse-it 11 Perfect It Foam Imperial Hand Finishing Material Pad (Glaze and Glaze Pad)

Paint Condition: Overspray or medium oxidation.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Imperial Microfin- Perfect It Foam Imperial Hand ishing Compound Pad (Glaze and Glaze (Medium Cut) Pad)

Paint Condition: Heavy oxidation or minor acid rain pitting.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Micro Fine Finesse-It 11 Perfect It Foam Imperial Hand 2000 Finishing Material Pad (Glaze and Glaze Pad)

Paint Condition: Dust nibs, minor scratches, or major acid rain pitting.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Micro Fine Finesse- It 11 Perfect It Foam Imperial Hand 1500 or 2000 Finishing Material Pad (Glaze and Glaze Pad)

Paint Condition: Orange peel, paint runs, or Sags.

Machine Wet Sanding Compounding Glazing Hand Glazing*

Micro Fine Imperial Microfin- Perfect it Foam Imperial Hand 1200 or 1500 ishing Compound Pad (Glaze and Glaze (Medium Cut) Pad)

* Optional Step

MEGUIAR'S ----------

RECOMMENDED REPAIR PROCEDURE.

Paint Condition: New car prep or fine wheel marks.

Wet Sanding Cleaning Polishing

Swirl Remove (No. 9) W-9000 Finishing Pad

Paint Condition: Swirl marks, chemical spotting, or light oxidation.

Wet Sanding Cleaning Polishing

Swirl Remover (No. 9) W-9000 Finishing Pad

Paint Condition: Overspray or medium oxidation.

Wet Sanding Cleaning Polishing

Heavy Cut Cleaner Swirl Remover (No. 9) (No. 4) W-7000 W-9000 Finishing Pad Cutting Pad

Paint Condition: Heavy oxidation or minor acid rain pitting.

Wet Sanding Cleaning Polishing

Heavy Cut Cleaner Swirl Remover (No. 9) (No. 4) W-7000 W-9000 Finishing Pad Cutting Pad

Paint Condition: Dust nibs / Minor scratches or acid rain pitting.

Wet Sanding Cleaning Polishing

2000 Grade Unigrit Heavy Cut Cleaner Swirl Remover (No. 9) Sanding Block (No. 4)/ W-9000 Finishing Pad

2000 Grade Unigrit W-7000 Swirl Remover (No. 9) Sanding Paper Cutting Pad W-9000 Finishing Pad

Paint Condition: Major runs or Sags/ Major orange peel or acid rain pitting.

Wet Sanding Cleaning Polishing

1500 Grade Unigrit Heavy Cut Cleaner Swirl Remover (No. 9) Sanding Block (No. 4)/ W-9000 Finishing Pad

1500 Grade Unigrit W-7000 Swirl Remover (No. 9) Sanding Paper Cutting Pad W-9000 Finishing Pad

Meguiar's W-1000 polishing pad is universal and works effectively on all surfaces. This pad may be substituted for either the W-7000 cutting pad or W-9000 finishing pad.

We believe these sources, their equipment, and materials to be reliable. There may be additional manufacturers of such materials and equipment. General Motors does not endorse, indicate any preference for, or assume responsibility for the products or equipment from these firms 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.