just bought a 1989 4x4 blazer with 4.3. have no idea how to tell if it is a base,sport,high country how do you tell?

 

the interior trim helps. i have an 88 tahoe edition and mine has leather, a/c and all power options.

 

your insurance company can tell you from the vin#
My insurance card actually has LS on it

 

GM dealer can tell you as well, using the VIN.

 

All the codes are listed inside the glove box door.