1994 Buick Regal Cruise control doesn't work at all

I broke off a "computer chip" key in the ignition of my 1994 Buick Regal Custom. I watched as the locksmith disassembled The steering column in order to get the key code necessary to make a new key.

I only just now noticed, eight months or so later, that my cruise control doesn't work at all, and I'm pretty sure it hasn't worked since that day, and I know that it worked prior to the locksmith's "intervention."

What do you think could be the problem?

Cordially, etc.