The meaning of the Acronym GMC is...

GMC is

• Guía Militar de Carreteras
• General Military Course
• Chief Gunners Mate
• General Motors Corporation

More Meanings For GMC:

• Global Module Cache
• GNU Midnight Commander
• Geometric Model Companion
• Global Motion Compensation
• Grant Mac Ewan College
• Got More Crap
• Garage Man's Companion
• Generally Mediocre Cars
• Generic Made Chevy
• German Milk Cow
• Get More Chicks
• Gets Mechanics Crazy
• Good Mexican Cars
• Give Me Chlorpromazine
• Gay Man's Caddy

GMC is also in:

• Adults
• Databases
• Funnies
• Mathematics
• Physics
• Software
• Universities