In the midst of a recall scandal involving ignition problems that have resulted in the deaths of at least a dozen people, General Motors has another publicity mess on its hand. The carmaker has told its dealers to stop selling certain Chevy Cruze models but isn’t publicly stating a reason for the halt.

GM says it is not recalling the model-year 2013 and 2014 Cruze vehicles with 1.4-liter turbo engines, but is just asking dealers to not sell any of those cars that have gone unsold.

“I can just confirm that we put a stop-sale in last night,” a GM rep told Reuters, only saying that stop-sales generally indicate that a dealer needs to do something to a particular car before it can be made available for sale again. While such orders are not uncommon, they often indicate that a safety issue needs to be dealt with by the dealer.

A Detroit-area dealer tells the Detroit News that no reason was given in the stop-sale letter sent out by GM’s corporate office.

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