Used 2020 Gmc Sierra SLT

 144,228 miles
 Diesel
 Freeport, PA

$39,995

AI Analysis:

$28,494 average market price. 

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Key Features

Mileage

144,228 miles

Drivetrain

4WD

Engine

6.6L V8 Turbo

Transmission

6 Speed Automatic

Fuel Type

Diesel

MPG

N/A

Color

Onyx Black / Jet Black

Title

Clean

Contact Seller

Se

Seibel's Auto Warehouse

230 Buffalo St

Freeport, PA 16229-1330

Financing Available

Pre-qualification takes just minutes. Compare multiple offers and save!

$677 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

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Dealer Description

This is a properly optioned, big-money SLT, ordered new with nearly $20,000 in factory options. You can buy a stripped gas truck, a beat fleet unit, or a high-mile diesel priced in fantasy land. Or you can buy this one, priced to move, optioned right, and ready to work. This was NOT a cheap truck when it rolled off the lot. This is the real one. Heavy-duty truck with real modern safety tech — not stripped fleet junk. Crew Cab that actually treats passengers like humans. You’re towing heavy, not time-traveling to 2006.

Features & Options

  • Duramax Diesel Package
  • Allison 10-Speed Automatic Transmission
  • SLT Premium Plus Package
  • Ventilated Front Seats
  • Heated Rear Seats
  • Bose Audio
  • Power Sliding Rear Window
  • Driver Alert Package I & II
  • Blind Zone Alert
  • Rear Cross-Traffic Alert
  • Front & Rear Park Assist
  • Trailering Package
  • Hitch Guidance
  • Integrated Brake Controller
  • X31 Off-Road Package
  • Off-Road Suspension
  • Skid Plates
  • Hill Descent Control
  • All-Terrain Tires
  • 20-Inch Polished Aluminum Wheels

Vehicle History Report

VIN: 1GT19NEY4LF182504

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Seller Details

Listed 1/10/2026

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Se

Seibel's Auto Warehouse

230 Buffalo St

Freeport, PA 16229-1330

Phone

724-540-**** Show number

Email

seibelsautowareh****@gmail.com Show email

Location

Contact Seller

Se

Seibel's Auto Warehouse

230 Buffalo St

Freeport, PA 16229-1330

Financing Available

Pre-qualification takes just minutes. Compare multiple offers and save!

$677 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

Get pre-qualified

Powered by MyAutoLoan.

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