# 2020 GMC Sierra 1500 AT4

> Used 2020 GMC Sierra 1500 AT4 available at Austin's Auto Sales in Edgewood, WA.

## Vehicle Information

- Year: 2020
- Make: GMC
- Model: Sierra 1500
- Trim: AT4
- Condition: Used
- Stock Number: 12925
- VIN: 3GTP9EEL9LG239809
- Mileage: 129,260 miles
- Exterior Color: Dark Sky Metallic
- Interior Color: Jet Black w/Kalahari Accents
- Body Style: Truck
- Engine: EcoTec3 6.2L V8 420hp 460ft. lbs.
- Transmission: Automatic
- Drivetrain: 4x4
- Fuel Type: Gas

## Pricing and Availability

- Advertised Price: $34,951
- Availability: In Stock
- Last Updated: 2026-11-05 18:07:46

Pricing and availability are subject to change.

## Features

- Sunroof(s)
- Collision Warning
- Backup Camera
- Bluetooth
- Parking Sensors/assist
- Rear Heated Seats
- Satellite Radio Ready
- Android Auto
- Automatic Climate Control
- Cross Traffic Alert
- Push Start
- Side Impact Airbags
- Adaptive Cruise Control
- Apple CarPlay
- Lane Departure Warning
- Leather Seats
- Navigation
- Power Seats
- Tow Package
- Head Up Display
- Heated Seats
- Lane Keep Assist
- Premium Audio
- Wi-Fi Hotspot
- Fog Lights
- Wireless Phone Charging

## OEM Options

Installed options total $12,435 MSRP.

- Driver Alert Package I: $890
- 20 x 9 In. Machined Aluminum Wheels w/Painted Accents: $800
- Bed View Camera: $250
- External Engine Oil Cooler
- GVWR of 7100 lbs.
- Trailer Tire Pressure Monitor System: $50
- 3.23 Rear Axle Ratio
- GVWR of 7000 lbs.
- Dark Sky Metallic Paint: $495
- P275/60R20SL All-Terrain Blackwall Tires: $200
- Technology Package: $2,075
- Auxiliary Transmission Oil Cooler
- Black Tubular Assist Steps: $795
- AT4 Premium Package: $3,355
- Front License Plate Bracket: $15
- Power Sunroof: $995
- Driver Alert Package II: $1,095
- Federal Emissions Requirements
- AT4 Preferred Package: $1,420
- Dynamic Fuel Management
- 170-Amp Alternator

## Vehicle Description

This 2020 GMC Sierra 1500 AT4 Crew Cab is finished in Dark Sky Metallic Paint and is fitted with 20 x 9 in. machined aluminum wheels with painted accents and P275/60R20SL all-terrain blackwall tires. Black tubular assist steps are included, along with a power sunroof and a front license plate bracket. The exterior details are paired with the AT4 trim treatment, while the listed equipment also includes Federal Emissions Requirements. This 2020 GMC Sierra 1500 AT4 Crew Cab carries a cabin equipped with leather seats and the AT4 Premium Package. The AT4 Preferred Package is also present, and the Technology Package adds the Head Up Display. A premium audio system is included, along with a Wi-Fi hotspot and the Bed View Camera. The driver-focused equipment list also includes Adaptive Cruise Control and Lane Keep Assist. This 2020 GMC Sierra 1500 AT4 Crew Cab includes Driver Alert Package I and Driver Alert Package II. The listed safety and monitoring equipment also includes the Trailer Tire Pressure Monitor System. These items are joined by the auxiliary transmission oil cooler and the external engine oil cooler. The truck also has a 170-amp alternator, and Dynamic Fuel Management is specified among its mechanical features. This 2020 GMC Sierra 1500 AT4 Crew Cab is listed with a GVWR of 7100 lbs. and a GVWR of 7000 lbs. It also includes a 3.23 rear axle ratio, which is part of the provided specification set. The hardware and option list is rounded out by the AT4-specific packages already named, and the vehicle's equipment list reflects a combination of comfort, driver-assistance, and towing-related items without adding anything beyond what is provided.

## Dealership Information

- Dealership: Austin's Auto Sales
- Location: Austin's Auto Sales - Edgewood, WA, Edgewood, WA
- Phone: (253) 256-7117
- [Location Details](https://www.austinsautosales.com/locations/austins-auto-sales-edgewood-wa): Address, phone, hours, and directions.

## Official Vehicle Listing

https://www.austinsautosales.com/for-sale/2020-gmc-sierra-1500-at4-crew-cab_3377699727000415

The official vehicle listing is the authoritative source for current pricing and availability.

## Disclaimer

A negotiable documentary service fee in an amount up to $200 may be added to the sale price or the capitalized cost.