2020 GMC Sierra 1500 AT4 For Sale in Lancaster, CA | Diamond Ford VIN: 1GTU9EET0LZ357184

Reduced by $500 since Sep 28, 2026

2020 GMC Sierra 1500 AT4



  • $31,667 Total Price:

  • Vehicle Price: $31,495
  • Document Processing Charge: +$85
  • Electronic Vehicle Registration: +$37
  • Emission Testing Charge: +$50
  • Total Price: $31,667

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Vehicle Information

VIN: 1GTU9EET0LZ357184
Stock #: B393734A
Model Code: TK10743
  • Body Style Crew Cab
  • Exterior Color Summit White
  • Interior Color 4Sb--Leather, Jet Black / Kalahari, Interior Trim
  • Mileage 99,889
  • Fuel Economy
    City/Highway 15/19 MPG
  • Engine Engine: 3.0L, DuraMax Turbo-Diesel, Inline 6 Cylinder
  • Transmission Automatic
  • Fuel Type Diesel Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.
  • 4WD/AWD

Dealer Comments

This 2020 GMC Sierra 1500 AT4 delivers premium truck capability with refined comfort and advanced technology. With its powerful 3.0L I6 engine paired with a 10-speed automatic transmission and 4WD, this truck handles any terrain while achieving solid fuel economy at 22 city and 26 highway MPG. The AT4 trim brings signature off-road ready styling and genuine truck performance for drivers who demand both work and play capability.

**Key Features:**
- ProGrade Trailering System with integrated trailer brake controller and hitch guidance
- Off-Road Suspension with hill descent control and heavy-duty rear locking differential
- Premium GMC Infotainment System with Apple CarPlay/Android Auto and 4G LTE Wi-Fi hotspot
- Heated and ventilated leather front seats with 10-way power adjustment and lumbar support
- Remote vehicle starter system and keyless open & start
- Spray-on pickup bed liner with AT4 logo and LED cargo lighting
- All-weather floor liners and dual-zone automatic climate control
- HD rear vision camera with hitch guidance display
- Heated steering wheel and auto-dimming mirrors
- 18 machined aluminum wheels with all-season capability

This well-maintained Sierra has been driven responsibly at approximately 8,300 miles annually, preserving its truck bed and chassis for years to come. The AT4's blend of luxury appointments and genuine off-road engineering makes it ideally suited for those seeking a capable truck that doesn't compromise on comfort or technology. Visit us today to experience the Sierra's commanding presence and refined capability firsthand.

Eligible Benefits

All Features

  • DriveType
    • DriveType: Four Wheel Drive
  • Fuel Economy
    • City: 15 MPG
    • Hwy: 19 MPG
    • Combined: 17 MPG
  • Fuel System
    • Fuel System: Direct Injection
  • Fuel Tank Capacity
    • Fuel Tank Capacity: 24 gal
  • Fuel Type
    • Fuel Type: Diesel Fuel
  • Horse Power
    • Horse Power: 277
  • Rear Wheel
    • Rear Wheel: Single
  • Trailering Capacity
    • Trailering Capacity: 0
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May not represent actual vehicle. (Options, colors, trim and body style may vary)

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