For 1990-2009 cars only
Weatherstrip Lubrication for GMC Truck GMC C Sierra - 2WD 2000
Using a clean cloth, apply a thin coat of silicone grease (GM P/N 12371287 or equivalent) to all the weatherstrips.
Silicone grease is used for the following reasons:
| • | Lengthen weather-strip life |
| • | Help sealing |
| • | Help eliminate squeaks |
