Does anyone know what is causing the 6.2L spun cranshaft issue? 2023 Yukon died on May 6th. Still waiting for a new engine. Dealer says it should ship next week (so ~3 months). Dealer said there is a nationwide backlog for the 6.2L. Apparently there's a list the dealers get weekly to see where customers are. Three months waiting...must be a long list. Question is whether the "problem" has been solved. Parts or manufactoring issue?