All AC Delco Locations - Illinois
- Addison
- Aledo
- Alsip
- Alton
- Anna
- Antioch
- Arlington Heights
- Aurora
- Bartlett
- Batavia
- Beardstown
- Belleville
- Bellwood
- Belvidere
- Bensenville
- Benton
- Berwyn
- Bloomingdale
- Bloomington
- Blue Island
- Bolingbrook
- Bourbonnais
- Bridgeview
- Broadview
- Cahokia
- Calumet City
- Calumet Park
- Canton
- Carbondale
- Carlock
- Carmi
- Carol Stream
- Carpentersville
- Cary
- Centralia
- Champaign
- Charleston
- Chicago
- Chicago Heights
- Chicago Ridge
- Cicero
- Clinton
- Collinsville
- Crestwood
- Crystal Lake
- Danville
- Darien
- Decatur
- Dekalb
- Des Plaines
- Dixon
- Dolton
- Downers Grove
- Du Quoin
- East Peoria
- East Saint Louis
- East Springfield
- Edwardsville
- Effingham
- Elgin
- Ellsworth
- Elmhurst
- Fairfield
- Fairview Heights
- Flora
- Forrest
- Forsyth
- Franklin Park
- Freeport
- Galesburg
- Glen Ellyn
- Glendale Heights
- Glenwood
- Granite City
- Grayville
- Greenville
- Hanover Park
- Harrisburg
- Harvard
- Harvey
- Hazel Crest
- Hickory Hills
- Hinsdale
- Hodgkins
- Homewood
- Jacksonville
- Jerseyville
- Joliet
- Kankakee
- Kewanee
- La Grange
- Lansing
- Lawrenceville
- Lincoln
- Lisle
- Litchfield
- Lockport
- Lombard
- Loves Park
- Lyons
- Machesney Park
- Macomb
- Marion
- Markham
- Matteson
- Mattoon
- Maywood
- Mccook
- Mchenry
- Medinah
- Melrose Park
- Merrionette Park
- Midlothian
- Moline
- Monmouth
- Montgomery
- Morris
- Mount Carmel
- Mount Prospect
- Mount Vernon
- Mundelein
- Naperville
- New Lenox
- Niles
- Normal
- North Chicago
- North Riverside
- Northbrook
- Northlake
- Oak Forest
- Oak Lawn
- Orland Park
- Ottawa
- Palatine
- Pana
- Paris
- Pekin
- Peoria
- Peru
- Plainfield
- Plano
- Pontiac
- Princeton
- Quincy
- Rantoul
- Rapids City
- Richton Park
- Robinson
- Rochelle
- Rock Falls
- Rock Island
- Rockford
- Rolling Meadows
- Roselle
- Round Lake Beach
- Saint Charles
- Salem
- Schaumburg
- Silvis
- Skokie
- South Chicago Heights
- South Elgin
- South Holland
- Sparta
- Springfield
- Streamwood
- Streator
- Sullivan
- Summit
- Taylorville
- Tilton
- Urbana
- Vandalia
- Villa Park
- Virden
- Volo
- Washington
- Waterloo
- Watseka
- Wauconda
- Waukegan
- West Chicago
- West Peoria
- Westmont
- Wheaton
- Willowbrook
- Wood Dale
- Wood River
- Woodstock
- Yorkville
- Zion