A curious question for those who may know:
1994 K1500 460LE.Every time I replace the transmission filter (about ten times-175K mi.) I use the GM part. The kit comes with a "seal" that is supposed to go in the filter mounting hole. I have never used the seal. It looks like the seal was a post-production modification. I can see the benefit of it but to install it you need to drive it in with a tool I don't have. Knowing that I could drive it in with a proper size socket and hammer I am afraid of not doing it perfectly straight and then having the nightmare of removing it--you know the scenario.
Anyhow, I was just looking for info on the reason this was added, does GM consider it "mandatory", and if yes, the best way to install it. As I said, I have around 175K miles on the truck with the original transmission and absolutely no problems to date (knock on wood, not tempting fate here!) and don't feel like necessarily changing what is working.
Any thoughts?
//Hunter