GMC Truck Forum banner
1 - 4 of 4 Posts

· 15 RCSB Z71
2018 GMC Sierra All Terrain 6.2L
Joined
·
3,505 Posts
I figured the R stood for regular but I wasn't sure of taylormade's system
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top