Home / Pre-Owned Inventory / Used / 2021 / GMC / Sierra 1500 / SLT / 1GTU9DED8MZ414140
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Used 2021 GMC Sierra 1500 SLT

VIN: 1GTU9DED8MZ414140
Stock #: MZ414140

84,732 mi.

Vehicle Details

MPG:14/20 (City/Hwy)
Trans.:8-Speed Automatic
Drivetrain:Four Wheel Drive
Engine: EcoTec3 5.3L V8
Fuel Type:Gasoline
Ext. Color:Summit White
Int. Color:Jet Black
Port Lavaca Price
$37,906
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2021 GMC Sierra 1500 SLT Summit White with Jet Black Interior
This bold and refined 2021 GMC Sierra 1500 SLT combines rugged 4WD capability with upscale comfort. Finished in Summit White with a Jet Black interior, it delivers strength, style, and advanced technology perfect for work or play.

Entertainment Features

Premium Bose Audio System

8″ GMC Infotainment System with Navigation

Bluetooth® Audio Streaming

Wireless Charging Pad

Apple CarPlay

Android Auto

Added Features

SLT Premium Plus Package $4,710

SLT Convenience Package II $1,585

Power Sunroof $995

20″ Polished Aluminum Wheels $800

Trailer Tire Pressure Monitor System $50

Safety Features

Forward Collision Alert

Lane Keep Assist with Lane Departure Warning

Front and Rear Park Assist

Safety Alert Seat

Teen Driver Technology

Standard Features

5.3L EcoTec3 V8 Engine with Dynamic Fuel Management

10-Speed Automatic Transmission

4WD with 2-Speed Autotrac Transfer Case

Heated & Ventilated Front Leather Seats

Heated Steering Wheel

Remote Start System

Dual-Zone Automatic Climate Control

EZ-Lift Power Lock & Release Tailgate

LED Headlamps & Signature Daytime Running Lamps

ProGrade Trailering System

Mechanical Features

Automatic Locking Rear Differential

Integrated Trailer Brake Controller

StabiliTrak Electronic Stability Control

Hill Descent Control

Advanced Trailering System

Heavy-Duty Air Filter

Fully Boxed High-Strength Steel Frame

Electric Power Steering

4-Wheel Antilock Disc Brakes

170-Amp Alternator

Why Buy from Port Lavaca Auto Group?

Wide selection of top-quality vehicles

Transparent and competitive pricing

Friendly, no-pressure sales team

Fast and easy financing options

Certified service center with expert technicians

Complimentary multi-point inspections

Convenient location with hometown hospitality

Excellent trade-in values

Family-owned and community-focused dealership

Thousands of satisfied customers

Our Reputation Speaks for Itself

Port Lavaca Auto Group has hundreds of 5-star Google reviews praising our commitment to customer satisfaction. Heres One recent example:

Best Car-buying experience Ive ever had! The staff was knowledgeable, friendly, and made the entire process stress-free. I love my New truck and will definitely be back for my next vehicle! Michael R., August 5, 2025

Dont wait! Drive home in this powerful and luxurious 2021 GMC Sierra 1500 SLT today. Experience the Port Lavaca difference, where customer satisfaction always comes first.

Standard Features

  • Preferred Equipment Group 4SA
  • Trailering Package
  • X31 Off-Road & Protection Package
  • X31 Off-Road Package
  • 6 Speakers
  • 6-Speaker Audio System Feature
  • AM/FM radio: SiriusXM with 360L
  • Not Equipped w/HD Radio
  • Premium audio system: GMC Infotainment System
  • Radio data system
  • Radio: Premium GMC Infotainment Sys w/Multi-Touch
  • SiriusXM w/360L
  • Steering Wheel Audio Controls
  • Air Conditioning
  • Automatic temperature control
  • Electric Rear-Window Defogger
  • Front dual zone A/C
  • Rear window defroster
  • 12-Volt Rear Auxiliary Power Outlet
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Driver Memory
  • Memory seat
  • Power driver seat
  • Power Front Passenger Windows w/Express Up/Down
  • Power Front Windows w/Driver Express Up/Down
  • Power Rear Windows w/Express Down
  • Power steering
  • Power windows
  • Remote keyless entry
  • Remote Vehicle Starter System
  • Steering wheel mounted audio controls
  • Auto-Locking Rear Differential
  • Electrical Lock Control Steering Column
  • Heavy Duty Suspension
  • Manual Tilt-Wheel & Telescoping Steering Column
  • Speed-sensing steering
  • Traction control
  • 4-Wheel Disc Brakes
  • ABS brakes
  • Dual front impact airbags
  • Dual front side impact airbags
  • Front anti-roll bar
  • Front wheel independent suspension
  • Keyless Open & Start
  • Low tire pressure warning
  • Occupant sensing airbag
  • Overhead airbag
  • Power Door Locks
  • Brake assist
  • Electronic Stability Control
  • Hill Descent Control
  • Delay-off headlights
  • Front fog lights
  • Fully automatic headlights
  • Dual Exhaust w/Premium Tips
  • Panic alarm
  • Security system
  • Theft Deterrent System (Unauthorized Entry)
  • Speed control
  • 170 Amp Alternator
  • Auxiliary External Transmission Oil Cooler
  • Heavy-Duty Air Filter
  • Not Equipped w/Dynamic Fuel Management
  • Auto-dimming door mirrors
  • Bumpers: chrome
  • Chrome Grille
  • Front License Plate Kit
  • Heated door mirrors
  • LED Cargo Area Lighting
  • Power door mirrors
  • ProGrade Trailering System
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Spray-On Pickup Bed Liner w/GMC Logo
  • 4G LTE Wi-Fi Hotspot Capable
  • All-Weather Floor Liner (LPO)
  • Apple CarPlay/Android Auto
  • Auto-dimming Rear-View mirror
  • Color-Keyed Carpeting Floor Covering
  • Compass
  • Driver door bin
  • Driver vanity mirror
  • Front reading lights
  • GMC Connected Access Capable
  • Heated steering wheel
  • Illuminated entry
  • OnStar & GMC Connected Services Capable
  • Outside temperature display
  • Overhead console
  • Passenger vanity mirror
  • Rear Dual USB Charging-Only Ports
  • Rear reading lights
  • Rear seat center armrest
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trip computer
  • Voltmeter
  • 10-Way Power Driver Seat Adjuster w/Lumbar
  • 10-Way Power Passenger Seat Adjuster w/Lumbar
  • Front 40/20/40 Split-Bench Seat
  • Heated Driver & Front Outboard Passenger Seating
  • Heated front seats
  • Perf Leather-Appointed Front Outboard Seat Trim
  • Power passenger seat
  • Split folding rear seat
  • Front Center Armrest w/Storage
  • Passenger door bin
  • Front Frame-Mounted Black Recovery Hooks
  • Hitch Guidance
  • Hitch Guidance w/Hitch View
  • In-Vehicle Trailering App
  • Integrated Trailer Brake Controller
  • 20″ x 9″ Polished Aluminum Wheels
  • Alloy wheels
  • Wheels: 18″ x 8.5″ 6-Spoke Machined Aluminum
  • Deep-Tinted Glass
  • Variably intermittent wipers
  • 3.23 Rear Axle Ratio
  • **CARFAX 1 OWNER**
  • **CLEAN CARFAX**
  • **LOCAL TRADE**
  • **NON SMOKER**

Vehicle Location

Port Lavaca Ford
1801 Highway 35 South Port Lavaca,
TX 77979-5110

VEHICLE DATA
Certain specifications, prices and equipment data have been provided under license from Chrome Data Solutions (\’Chrome Data\’). © 2025 Chrome Data Solutions, LP. All Rights Reserved. This information is supplied for personal use only and may not be used for any commercial purpose whatsoever without the express written consent of Chrome Data. Chrome Data makes no guarantee or warranty, either expressed or implied, including without limitation any warranty of merchantability or fitness for particular purpose, with respect to the data presented here. All specifications, prices and equipment are subject to change without notice.

ESTIMATE MPG
EPA mileage ratings are supplied by Chrome Data Solutions, LP for comparison purposes only. Your actual mileage will vary, depending on how you drive and maintain your vehicle, driving conditions, battery pack age/condition (hybrid models only) and other factors.

Based on 2019 EPA mileage ratings. Your MPGe/MPG and driving range will vary depending on driving conditions, how you drive and maintain your vehicle, battery-pack age/condition, and other factors.

PRICING
Vehicle pricing is believed to be accurate. Tax, title and registration are not included in prices shown unless otherwise stated. Manufacturer incentives may vary by region and are subject to change. Vehicle information & features are based upon standard equipment and may vary by vehicle. Monthly payments may be higher or lower based upon incentives, qualifying programs, credit qualifications, residency & fees. No claims, or warranties are made to guarantee the accuracy of vehicle pricing, payments or actual equipment. Call to confirm accuracy of any information.

Manufacturer’s Rebate subject to residency restrictions. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer’s rebate.

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