A Rivian spokesman said the component causing the problem is part of its in-house motors, but he declined to disclose any further details.
Rivian CEO RJ Scaringe during a Morgan Stanley investor conference last month alluded to problems with a number of suppliers: "We've had a couple of supplier issues of recent that have been challenging and in particular, a few issues around our in-house motors with some of the components that have been painful and a reminder of just how a multi-tiered supply chain can be difficult."