Chaos is back in the used car market. While prices had finally started to drop towards normal late last year, this trend has abruptly reversed course.

General Motors says it will spend more than $900 million to update four factories, with the bulk going to an engine plant in Flint, Michigan, to build the next-generation V8 for big pickup trucks and SUVs.

General Motors’ net income declined in the first quarter, as the automaker sold fewer cars and trucks worldwide, though higher prices helped boost revenue, especially in North America.

U.S. new-vehicle sales fell about 12% in the first quarter compared with a year ago, as the global computer chip shortage continued to slow factories amid high consumer demand.

General Motors is recalling more than 400,000 trucks over an airbag issue.