| Subject: | Expandable Acoustic Foam (Two Component Sound Dampener) Usage with
Collision Damage Repairs |
| Models: | 2003 and Prior Passenger Cars and Light Duty Trucks |
When performing collision repairs or replacing some components on most
GM model vehicles, it is important that the foam blocking material used for
noise, water and dust control be replaced as well.
This foam material is packaged as a two component material. This material
is applicable for replacement of the original production material, since both
are a "closed cell material" and are not water absorbent.
TYPICAL LOCATIONS for this material are indicated on the illustrations
below. SPECIFIC FOAM LOCATION WILL BE PROVIDED IN GM SERVICE MANUALS IN THE
NEAR FUTURE.
Two Component Material
This material has more of an industrial application, but can be obtained
(from the sources listed below) in various quantities useful for collision
repairs.
It is especially useful when filling "blind" areas (areas
that can't be seen) that require the expansion of the material to ensure sealing.
Our experiments indicate the following information:
Important: Do not use more than was needed for production applications.
| • | Over application of this material in some areas of the vehicle
may change performance characteristics and is not recommended. |
| • | It is recommended that a small amount be applied into a disposable
container to become familiar with the rate of discharge and ensure proper
mixing of both material parts. |
Contact the following sources for information on sales and distribution.
| • | For larger jobs (rocker box): |
| - | *"FROTH PAK" 12 KIT, Insta-Foam Products, Inc., Disturbed
by Essex Arg. |
| - | Contact 1-800-246-4405, ext.11, (in Canada,
contact Dow Chemicals at 1-800-366-4740). |
| • | For smaller jobs (A pillar): |
| - | *3M® Corporation, Flexible Foam 0.201L (6.8 oz),
P/N 8463. |
| - | In U.S., call 1-800-521-8100, ext 5165 (in Canada,
1-800-364-3577). |
| - | *Kent Automotive, Urefoam Expandable 0.050L (1.7 oz),
P/N 10630, or 0.296L (10 oz), P/N 10601. |
| - | In U.S., call 1-800-654-6333 (in Canada, 1-800-563-1717). |
*We believe these sources and their products to be reliable. There may
be additional manufacturers of such products. General Motors does not endorse,
indicate any preference for or assume any responsibility for the products
or equipment from these firms or for any such items which may be available
from other sources.
Important: As always, follow the manufacturer's recommendations for application
and safety.
Typical Foam Installation Areas (Cars)
Typical Foam Installation Areas (Trucks)
