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O'Fallon Buick GMC

O'Fallon Buick GMC - 428 Cars for Sale

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428 vehicles found

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Year:
2025
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
27,841
Stock #:
G261237A
VIN:
1GT4USE78SF296280
Summit White 2025 GMC Sierra 3500HD Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2025 GMC Sierra 3500HD

Pro Crew Cab 4WD

27,841 mi

O'Fallon, MO
Good Deal

$48,599

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Stock #:
G261174
VIN:
1GTUUDEL5TZ512370
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $69,735

$59,709

$57,459

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Summit White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Stock #:
G26514
VIN:
3GTUUDE80TG267957
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$3,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $69,035

$60,076

$56,826

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Glacier White
Fuel type:
Diesel
Interior color:
Alpine Umber
Transmission:
Automatic
Stock #:
G26839
VIN:
1GTUUHE86TZ385292
Glacier White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$3,250

 

2026 GMC Sierra 1500

Denali Ultimate Crew Cab 4WD

O'Fallon, MO

New car

MSRP $87,230

$77,851

$74,601

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Stock #:
G261163
VIN:
1GTUUDED0TZ511538
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $65,245

$55,646

$53,396

Year:
2025
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Mileage:
27,841
Stock #:
G261237A
VIN:
1GT4USE78SF296280
Summit White 2025 GMC Sierra 3500HD Pickup Truck Four-Wheel Drive Automatic
New arrival

 

2025 GMC Sierra 3500HD

Pro Crew Cab 4WD

27,841 mi

O'Fallon, MO
Good Deal

$48,599

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
420 hp 6.2L V8
Exterior color:
Summit White
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Stock #:
G261174
VIN:
1GTUUDEL5TZ512370
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $69,735

$59,709

$57,459

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Summit White
Fuel type:
Diesel
Interior color:
Black
Transmission:
Automatic
Stock #:
G26514
VIN:
3GTUUDE80TG267957
Summit White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$3,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $69,035

$60,076

$56,826

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Glacier White
Fuel type:
Diesel
Interior color:
Alpine Umber
Transmission:
Automatic
Stock #:
G26839
VIN:
1GTUUHE86TZ385292
Glacier White 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$3,250

 

2026 GMC Sierra 1500

Denali Ultimate Crew Cab 4WD

O'Fallon, MO

New car

MSRP $87,230

$77,851

$74,601

Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
355 hp 5.3L V8
Exterior color:
Onyx Black
Combined gas mileage:
17 MPG
Fuel type:
Gasoline
Interior color:
Black
Transmission:
Automatic
Stock #:
G261163
VIN:
1GTUUDED0TZ511538
Onyx Black 2026 GMC Sierra 1500 Pickup Truck Four-Wheel Drive Automatic
Price drop

-$2,250

 

2026 GMC Sierra 1500

SLT Crew Cab 4WD

O'Fallon, MO

New car

MSRP $65,245

$55,646

$53,396

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