General Motors has decided to cancel the planned June allocation cycle for the 2021 Chevrolet Corvette, essentially meaning orders are no longer being accepted for 2021 models.

An email sent from Chevrolet to the brand’s dealers and shared online by Corvette Action Center revealed that the change has been made to ensure that production of the 2022 Corvette Stingray can begin in late Q3 as originally planned.

In the email, Chevrolet notes that it will fulfill all accepted 2021 Corvette orders with an event code of 3000 (order accepted by production control) and above, but customers whose cars have a lower event code may need to instead place an order for a 2022 model depending on where they are in the ordering process.

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In addition to ensuring that 2022 Corvette production starts on time, Chevrolet added that the move has been made in part because of temporary part shortages. It didn’t specify what parts it is struggling to source but said the issue is not related to the ongoing semiconductor shortage. The automaker also hasn’t stated how many 2021 models it has had to remove from its build plan nor how many customers will need to switch their orders to a 2022 model.

Chevrolet began building the 2021 Corvette on December 11, 2020 but production has been halted on a number of occasions this year. Most recently, it stopped manufacturing the Corvette in late May and the Bowling Green Assembly line where it is built is still idled. No date has been given as to when production will resume.