All GMC Locations - Illinois
- Aledo
- Alton
- Arlington Heights
- Aurora
- Barrington
- Beardstown
- Belleville
- Belvidere
- Bloomington
- Cahokia
- Canton
- Carbondale
- Carlinville
- Carmi
- Centralia
- Champaign
- Charleston
- Chicago
- Collinsville
- Crystal Lake
- Dekalb
- Dixon
- Downers Grove
- Effingham
- El Paso
- Elgin
- Elizabeth
- Elmhurst
- Forsyth
- Freeport
- Galesburg
- Geneseo
- Gurnee
- Harvard
- Highland
- Hodgkins
- Jacksonville
- Jerseyville
- Joliet
- Kankakee
- Kewanee
- Libertyville
- Lincolnwood
- Litchfield
- Macomb
- Marion
- Matteson
- Mattoon
- Mchenry
- Metropolis
- Moline
- Morris
- Morton
- Mount Vernon
- Naperville
- Nashville
- North Riverside
- Oak Lawn
- Olney
- Ottawa
- Paris
- Paxton
- Pekin
- Peoria
- Peru
- Pittsfield
- Pontiac
- Quincy
- Red Bud
- Robinson
- Rockford
- Saint Charles
- Salem
- Sandwich
- Schaumburg
- Sparta
- Springfield
- Streator
- Sullivan
- Taylorville
- Tilton
- Tinley Park
- Vandalia
- Villa Park
- Watseka
- West Frankfort
- Wilmington