sentences:  Following the launch of Volvo GM Heavy Truck Corporation, the Brigadier was marketed under the combined WhiteGMC branding through the 1989 model year.In 1966, General Motors split its heavy-duty trucks further apart from medium-duty models, giving them a distinct chassis and ending the use of the cab from the C/K-series pickup truck.The 1966 H/J-series (H=single; J=tandem) was designed with a model-specific 93-inch BBC cab and chassis.