It's officially summer here so the truck is not being used. I want to take it in to get TA installed in case ds doesn't last rf through next winter. From my searches I've found that I can get at least 1 tether installed and that I need to reference the service bulletin number. The center is lap belt only so I'd really like to have a TA there. Can anyone look up to see what positions they can be retrofitted? Also, can I buy my own heavy duty anchor and have them install that instead for the center position? It's the ext cab in case that matters. It's actually Chevy Silverado-I was searching both and confused myself and now I can't edit the title.