Try-out keys are a set of 64 keys that will work on any GM lock from 1935 to 1966. I don't know how they do it. There were 1800 different key codes but I've never come across a lock one of these 64 won't open.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.