Anyone replace their seat foam? Called the dealer and part number 21993923 seat pad is obsolete. I think mine is breaking down after 132000 miles. The leather is still pretty nice, but I wanted to replace both (seat cover 25972180) but it is also removed from GM parts system.

 

Pick a part or online wrecker might have something

 

Some nice foam from a foam store, a can of spray adhesive and an electric knife will do if you're patient and can't find anything suitable.

 

Automotive upholstery shops are getting scarce