Yes, the GM shaft is discontinued. I found one, but
maybe they're all gone by now. Dorman sells a Chinese replacement.
Originally for a C3500, I put it onto an '88 K1500. Apparently works for any GMT400 that doesn't have the additional joint in the steering columm; which--I guess--started in '95 on airbag-equipped vehicles.
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The UPPER bolt connects exactly like the original--through the bolt hole intended by GM. Also needed: A new GM bolt for the steering gear end. A touch longer than the original.
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