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New GMC Sierra 1500 SLT for Sale near Castle Rock, CO

94 results
Castle Rock, CO
2026 GMC Sierra 1500 SLT Crew Cab 4WD Alpine Buick GMC

2026 GMC Sierra 1500

New car | MSRP $69,294

$63,044

Highlands Ranch, CO
15 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
6
Stock number:
TG127049
VIN:
3GTUUDE80TG127049

Sponsored

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $69,324

$63,074

Highlands Ranch, CO
15 mi away
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:
Glacier White Tricoat
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
3
Stock number:
TG147111
VIN:
3GTUUDED6TG147111

Sponsored

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $68,499

$62,249

Colorado Springs, CO
38 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TG128274
VIN:
3GTUUDED5TG128274

Sponsored

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $68,799

$62,549

Highlands Ranch, CO
15 mi away
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:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
5
Stock number:
TG127318
VIN:
3GTUUDE81TG127318

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $69,614

$62,364

Highlands Ranch, CO
15 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
5
Stock number:
TZ192795
VIN:
1GTUUDED1TZ192795

2026 GMC Sierra 1500 SLT Crew Cab 4WD

2026 GMC Sierra 1500

New car | MSRP $69,119

$62,869

Highlands Ranch, CO
15 mi away
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:
Summit White
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
5
Stock number:
TZ192498
VIN:
1GTUUDED6TZ192498

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $68,004

$60,754

Highlands Ranch, CO
15 mi away
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:
Summit White
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
18
Stock number:
TG127636
VIN:
3GTUUDED8TG127636

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,460

$63,210

Colorado Springs, CO
38 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TZ254242
VIN:
1GTUUDED8TZ254242

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $68,724

$62,474

Highlands Ranch, CO
15 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
3
Stock number:
TG147103
VIN:
3GTUUDED7TG147103

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,294

$63,044

Highlands Ranch, CO
15 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Onyx Black
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
21
Stock number:
TG127047
VIN:
3GTUUDE87TG127047

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $68,499

$62,249

Colorado Springs, CO
38 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TG128274
VIN:
3GTUUDED5TG128274

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $68,270

$62,020

Colorado Springs, CO
38 mi away
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:
Sterling Metallic
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TG222831
VIN:
3GTUUDEDXTG222831

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $70,255

$65,005

Colorado Springs, CO
38 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TZ255097
VIN:
1GTUUDE84TZ255097

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,614

$63,364

Highlands Ranch, CO
15 mi away
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:
Sterling Metallic
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
10
Stock number:
TZ187541
VIN:
1GTUUDED0TZ187541

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,294

$63,044

Highlands Ranch, CO
15 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Sterling Metallic
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
6
Stock number:
TG127049
VIN:
3GTUUDE80TG127049

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $71,545

$66,295

Colorado Springs, CO
38 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Onyx Black
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
15
Stock number:
TG112140
VIN:
3GTUUDE8XTG112140

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,614

$63,364

Highlands Ranch, CO
15 mi away
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
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
5
Stock number:
TZ192658
VIN:
1GTUUDED2TZ192658

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $70,510

$65,260

Colorado Springs, CO
38 mi away
Year:
2026
Make:
GMC
Model:
Sierra 1500
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
3L I6 Diesel
Exterior color:
Titanium Rush Metallic
Fuel type:
Diesel
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
15
Stock number:
TG114113
VIN:
3GTUUDE86TG114113

Preparing for a close up...

Photos coming soon

2026 GMC Sierra 1500

New car | MSRP $69,324

$63,074

Highlands Ranch, CO
15 mi away
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:
Glacier White Tricoat
Fuel type:
Gasoline
Interior color:
Jet Black, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
3
Stock number:
TG147111
VIN:
3GTUUDED6TG147111

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  3. / GMC Sierra 1500
  4. / SLT
  5. / Colorado
  6. / Castle Rock
FAQs

GMC Sierra 1500 SLT FAQs

What is the fuel economy of the GMC Sierra 1500 SLT?

Depending on the engine and options, the GMC Sierra 1500 SLT gets between 16 and 24 MPG (or MPGe).

What fuel types are available?

Diesel, Flex Fuel Vehicle, Gasoline engines are available.

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