I know there are several models of Sierra but I'm wandering what the initials stand for. Mine is an SLE and seems to be very well equiped. I'm also looking for a second set of rims so I can have a set of winter shoes and a set of summer shoes, I bought a set of aluminum rims for a 92 and they locked up on the brakes, whet years will interchange with a 99 Sierra 1500 SLE? Thanks for any info you might share.

 

standard luxury edition.. i believe