I'm still, respectfully, foo fooing this prediction. I think dealers and stock holders (not to mention UAW!) will mutiny if GM artificially holds back production. Or tries to limit to custom orders. Dealers want full lots. Empty lots make it look like a dealer is going under. There are plenty of people who cross shop with other brands and buy that day. if I go shopping for a "big SUV" and the Ford dealer has every option and color I want on the lot, but my GMC store tells me I can come inside, sit down & order one, and it'll show up in 10 weeks, give or take... plenty of people will just shrug and buy the Ford.
We might be a long way from having $10,000 to 15k on the hood like it was just 2 years ago, but the chip shortage can only last so long.