Subject: Information on Paint Stain Under Protective Shipping Film #05-08-51-001B - (03/16/2007)

Models: 2005-2007 GM Passenger Cars and Trucks (
This bulletin is being revised to add the 2007 model year, update the procedure information and include warranty information. Please discard Corporate Bulletin Numbers 05-08-51-001A and 05-08-51-005 (Section 08 - Body & Accessories).

Dealers may notice what they perceive to be paint staining when the protective shipping film is removed from these vehicles. This "stain" has the appearance of patches of "milkiness" in the paint. This affects metallic paints and is particularly noticeable on silver-colored vehicles.

This "stain" condition is caused by condensation, which tends to form under the shipping film while the vehicle is in transit to the dealer. It will disappear after the vehicle is exposed to direct sunlight. Application of heat from heat lamps or similar devices will accelerate this process as well.

The reason for the recent increase of such incidents is because of styling revisions to the vehicle, which have resulted in air pockets under the film. Alternative protective films are being investigated that will not cause this condition.

Important: DO NOT ATTEMPT TO POLISH OR RESPRAY THE VEHICLE FOR THIS CONDITION.

The preferred process for correcting this condition is exposure to direct sunlight. Park the vehicle with the affected area exposed to the direct sunlight. The "stain" will generally disappear within 2-3 hours. In more severe cases, the vehicle may need to be left in an area exposed to direct sunlight for up to 3 days.

If a rapid correction is desired, or weather conditions are unsuitable for exposure to sunlight, application of a heat gun is acceptable. Follow the steps below if using this method:

Ensure that the plastic components, such as grilles, badges, wiring harness, etc., under the affected panel are protected from the heat application by masking or by placing a cardboard sheet between the area of heat application and the components being protected.
Wipe the area with isopropyl alcohol.
Place the heat gun approximately 76-101 mm (3-4 in) away from the area.
Important: Ensure that the panel temperature does not exceed 130°C (266°F) at any time.

Heat the stained area to between 93°C and 104°C (200°F and 220°F). While heating the panel, use a non-contact or infrared thermometer to check the surface temperature.
After the stain is removed, let the panel air cool to avoid warping.