The impending arrival of the 2027 Chevrolet Silverado 1500 and its GMC Sierra fraternal twin are the biggest news at General Motors right now, but their heavy-duty siblings might steal some of the spotlight if recent reports – allegedly from within GM – are to be believed. The Silverado 2500HD and 3500HD, as well as their respective Sierra equivalents, are slated to get two new engines for the 2027 model year.
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