Shares of the Irvine, California-based company were down 5%.
The production halt is the latest in a series of supply chain challenges for Rivian, which, like other EV makers, has faced significant production problems over the past two years due to supplier shortages.
“Our Electric Delivery Van (EDV) production has been temporarily impacted due to a part shortage. We expect to recover all missed production,” the spokesperson said in an emailed statement.
The company did not release any information about the specific part and supplier in question and also declined to comment on when the production shutdown began and whether it has resumed.
Rivian manufactures all of its vehicles at a factory in Normal, Illinois, with plans for a second assembly plant in Georgia.
The part shortage will not affect production of other Rivian vehicles, including its R1S SUV and R1T pickup models.
Amazon did not immediately respond to a Reuters request for comment.
Amazon, Rivian’s largest investor with a 16% stake, has ordered 100,000 electric delivery vans by 2030. Last year, sales to Amazon represented about 19% of Rivian’s revenue.
Earlier this month, Rivian maintained its production forecast and said deliveries in the current quarter would be slightly lower after closing its factory in April for retooling and modifications.
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