For 1990-2009 cars

# Use of Silicone for Weatherstrip Maintenance

Subject: | Use of Silicone for Weatherstrip Maintenance

Models: | 2008 and Prior GM Passenger Cars and Trucks (including Saturn)

| 2008 and Prior HUMMER H2, H3

| 2005-2008 Saab 9-7X

This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 99-08-64-016A (Section 08 - Body and Accessories).

In the past, questions have been raised regarding the proper care and maintenance of weatherstrips. The purpose of this bulletin is to clarify which materials are recommended for use when required.

Periodically, a thin coating of silicone grease can prolong the life of the weatherstrip. The silicone will reduce wear in the contact areas as well as reduce squeaking and sticking conditions. During very cold or damp weather, more frequent applications may be necessary.

Important: Be careful in areas where clothing may come in contact with the weatherstrip, as silicone or dirt may be transferred to clothing.

### Parts Information

Part Number | Description
--- | ---
12345579 (U.S.) 10953481 (Canada) | Goodwrench Dielectric Silicone Grease (or equivalent) Lubricant Silicone Grease
3634770 (U.S.) 10953518 (Canada) | Goodwrench Weatherstrip Lubricant (Krytox*) (or equivalent) Lubricant

*The use of KRYTOX for coating weatherstrips is allowed, but not required.