It has been recommended many times here to use GM Weatherstrip Lubricant for our trim to prevent cracking. I went to Chevrolet dealer and we looked up the product in their online catalogue. It was $50. It looks like a small white bottle you hold upside down and it has an applicator on top. Only something like 3 ounces. C'mon. $50?
I have the part number in my car if I need to go get it.
I have the part number in my car if I need to go get it.