The 2015 Chevrolet Silverado 2500 and 3500 Heavy Duty trucks have been spotted a lot recently, along with its twin, the GMC Sierra HD. And the latest spy photos reveal that the trucks are currently testing with different exhaust tips, and one of them — most likely the diesel one from its tailpipe design — is testing with an Indiana license plate, rather than the traditional Michigan manufacturer’s plate. The photos can be found on PickupTrucks.com.
Looking into things, it’s apparent that Allison Transmission has a facility just outside Indianapolis. GM also has a truck assembly plant in Fort Wayne, which builds GM full-sized trucks. Though it could be that Allison is testing the camouflaged truck with an all-new transmission, and could be holding the vehicle at the facility. The exhaust design, on the other hand, could just be a differentiation between the gas-powered and Duramax diesel-powered variant. Look for the Chevy Silverado HD and GMC Sierra HD trucks to launch next year.