Reduced by $510 since Jul 17, 2026

2021 GMC Sierra 1500 AT4



  • $39,690 Alpine Price

    • +$690
  • Alpine Price $39,690



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Vehicle Information

VIN: 3GTP9EELXMG209915
Stock #: PNKE58778A
Model Code: TK10543
  • Body Style Crew Cab
  • Exterior Color Satin Steel Metallic
  • Interior Color Jet Black With Kalahari Accents, Perforated Leather Front Seat Trim
  • Mileage 83,000
  • Fuel Economy
    City/Highway 14/19 MPG
  • Engine Engine: 6.2L, EcoTec3 V-8, DI, Dynamic Fuel Mgt, V V T
  • Transmission Automatic
  • Fuel Type Gasoline Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

This 2021 GMC Sierra 1500 AT4 represents a capable full-size pickup truck built for both work and weekend adventures. With its muscular presence and proven engineering, this truck delivers the performance and features you expect from a premium pickup.

- Power Sunroof
- Technology Package with HD Surround Vision and Rear Camera Mirror
- Multicolor 15 Diagonal Head-Up Display
- 20 Machined Aluminum Wheels with Carbon Grey Metallic Accents
- EcoTec3 6.2L V8 Engine with Dynamic Fuel Management
- Driver Alert Package II with Automatic Emergency Braking and Adaptive Cruise Control
- Perforated Leather-Appointed Front Seat Trim
- Heated and Ventilated Front Seats
- 10-Way Power Driver Seat with Lumbar Support
- Premium Bose 7-Speaker Sound System with SiriusXM
- Apple CarPlay and Android Auto Integration
- Spray-On Pickup Bed Liner with AT4 Logo
- ProGrade Trailering System with Integrated Trailer Brake Controller
- AT4 High Clearance Step
- Cat-Back Performance Exhaust

The AT4 trim reinforces this truck's off-road heritage with an off-road suspension that handles rough terrain with confidence. The exterior presents a commanding Gray finish complemented by the truck's aggressive stance and design elements that signal capability and durability.

Under the hood, the EcoTec3 6.2L V8 engine produces 420 horsepower and 460 lb-ft of torque, paired with a 10-speed automatic transmission and 4WD for responsive handling across varied conditions. The dynamic fuel management system adjusts cylinder operation between 2 and 8 cylinders depending on demand, optimizing both power delivery and efficiency when cruising at highway speeds.

Inside, the truck's cabin combines comfort with connectivity. The premium GMC Infotainment System with navigation keeps you oriented, while the multicolor head-up display projects critical information directly into your line of sight. Heated and ventilated front seats with leather trim provide comfort across seasons, and the 10-way power driver seat with lumbar support ensures proper positioning on long drives.

Safety and driver assistance technologies are integrated throughout. Forward Collision Alert, Automatic Emergency Braking, Lane Keep Assist with Lane Departure Warning, and Adaptive Cruise Control work together to help protect you and your passengers. The truck also features HD Surround Vision with trailer view camera provisions and a rear camera mirror, giving you comprehensive visibility when maneuvering in tight spaces or backing up a trailer.

Alpine offers an unconventional experience with up front pricing, a non commissioned staff, no games, and a pain free auto shopping experience. Our focus is your satisfaction and making sure you walk out the door happy, with our without a vehicle. Only at Motor City, Only at Alpine! (719)636-3881 1313 Motor City Drive, Colorado Springs, CO 80905.

Eligible Benefits

All Features

  • DriveType
    • DriveType: Four Wheel Drive
  • Fuel Economy
    • City: 14 MPG
    • Hwy: 19 MPG
    • Combined: 16 MPG
  • Fuel System
    • Fuel System: Direct Injection
  • Fuel Tank Capacity
    • Fuel Tank Capacity: 24 gal
  • Fuel Type
    • Fuel Type: Gasoline Fuel
  • Horse Power
    • Horse Power: 420
  • Rear Wheel
    • Rear Wheel: Single
  • Trailering Capacity
    • Trailering Capacity: 0
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Prices include all active discounts, incentives and $689.50 dealer handling fee. Prices exclude tax, tag, title, and dealer installed accessories. $2,495 for the Alpine package which includes window tint clear bra, alpine shield, road hazard, paintless dent repair, windshield repair, and nitro fill. Additional discounts and factory rebates may be applied depending on the zip code of where the vehicle will be titled. For the maximum discount, you must purchase from in-stock inventory and finance with Ford Motor credit. Ford Motor Credit rebates, APR, and lease rates can vary based on zip code and individual credit score. While we make every effort to ensure the information listed on our website is correct, there may be instances of errors resulting in vehicle prices, options, and/or features to be listed incorrectly. The dealer is not responsible for any of these errors. Please contact a dealership sales representative for additional details and to verify the accuracy of the information on this website.

Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed. This site, and all information and materials appearing on it, are presented to the user "as is" without warranty of any kind, either express or implied. All vehicles are subject to prior sale. Price does not include applicable tax, title, and license charges. ‡Vehicles shown at different locations are not currently in our inventory (Not in Stock) but can be made available to you at our location within a reasonable date from the time of your request, not to exceed one week.