Used 2021 Gmc Sierra 1500 SLT

 79,332 miles
 Diesel
 Lakeland, FL

$34,500

AI Analysis:

$35,933 average market price. You save $1,433 (4%). 

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Key Features

Mileage

79,332 miles

Drivetrain

RWD

Engine

3L I6 DOHC Turbo

Transmission

10 Speed Automatic

Fuel Type

Diesel

MPG

23 / 30

Color

Onyx Black / Jet Black

Title

Clean

VIN

3GTP8DET3MG441821

Contact Seller

Ke

Kelley Automotive Group

1555 S Florida Ave

Lakeland, FL 33803

Financing Available

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$584 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

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Dealer Description

This 2021 GMC Sierra 1500 SLT is a standout in the full-size truck segment, offering a winning combination of power, capability, and premium features. Boasting a sleek Onyx Black exterior and a well-appointed interior, this Sierra is ready to tackle any task with confidence. The Sierra's 3.0L Duramax diesel engine delivers an impressive 460 lb-ft of torque, providing effortless towing and hauling capabilities. Paired with a smooth-shifting 10-speed automatic transmission, this powertrain offers an exceptional balance of power and efficiency, with an EPA-estimated 30 MPG on the highway. Inside, the Sierra SLT pampers you with a wealth of premium features, including heated and ventilated front seats, a heated steering wheel, and dual-zone automatic climate control. The GMC Infotainment System with a large touchscreen display keeps you connected and entertained, while the ProGrade Trailering System and integrated trailer brake controller make towing a breeze. Safety and convenience are also top priorities, with features like the Theft Deterrent System, Keyless Open and Start, and the 4G LTE Wi-Fi Hotspot ensuring your peace of mind and connectivity on the road. Whether you're hauling heavy loads, towing your boat or camper, or simply enjoying the daily commute, this 2021 GMC Sierra 1500 SLT is the perfect companion. Its combination of power, technology, and premium amenities make it a standout in the full-size truck segment. Experience the difference for yourself and schedule a test drive today. We're confident you'll be impressed by the Sierra's capabilities and the exceptional value it offers.

Features & Options

  • Android Auto
  • Apple CarPlay
  • Fog Lights
  • Heated Seats
  • Keyless Entry
  • Memory Seats
  • Power Seats
  • Premium Audio
  • Remote Start
  • Tow Package

Vehicle History Report

VIN: 3GTP8DET3MG441821

Check this vehicle's history for accidents, service records, ownership, and more.

Seller Details

Listed 3/31/2026

View original listing
Ke

Kelley Automotive Group

1555 S Florida Ave

Lakeland, FL 33803

Phone

863-688-**** Show number

Email

****@kellyautomotivegroup.com Show email

Location

Contact Seller

Ke

Kelley Automotive Group

1555 S Florida Ave

Lakeland, FL 33803

Financing Available

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

$584 / month

  • Rates as low as 4.09% APR

  • Browse multiple offers

  • Same-day approval

Powered by MyAutoLoan.

Explore More Options