4 NEW GM Logo OEM J IGNITION & K DOORS/TRUNK Key Blanks Uncut 320470 + 320471 For Sale - New and Used

General Motors (GM) used lettered square and round key blanks for their vehicles starting in 1968, and they continued to use these blanks into the 2000s. The keys were usually grouped in pairs, such as (A, B), (C, D), (E, H), and (J, K). The specific group of keys a GM vehicle uses depends on the year it was manufactured. Here’s a breakdown of the lettered key groups by year:

• 1970: (J, K)
• 1974: (J, K)
• 1978: (J, K)
• 1982: (J, K)
• GM continued to use some lettered keys until 2002. For example, the ‘H’ secondary key was used in the Chevrolet Camaro until that year.The square key (referred to as the primary key) is used for the ignition lock, while the round key (referred to as the secondary key) is used for door, trunk, and glove box locks12. If you have a specific GM vehicle and need replacement keys, feel free to let me know, and I’ll assist you further!

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