Close STOCKMG385874
VIN3GTU9DET6MG385874
Used 2021 GMC Sierra 1500 SLT near Goliad, TX
- Price
- $33,998
- Document Fee
- +$225
- Port Lavaca Price
- $34,223
Popular Features
Details
Vehicle Description
Fog Lights
Cruise Control
Heated Seat
Heated Steering Wheel
Android Auto
Apple CarPlay
Premium Sound
Sat Radio
Navigation
Keyless Entry
Reverse Camera
Bluetooth
Mileage
90,285
Trim
SLT
Stock #
MG385874
VIN
3GTU9DET6MG385874
Exterior Color
Onyx Black
Interior Color
Jet Black
Fuel Economy
City:22 Hwy:26
Doors
4
Passengers
6
Engine
3.0L I6
Transmission
10-Speed Automatic
Drivetrain
4WD
The 2021 GMC Sierra 1500 SLT in Onyx Black with Jet Black interior delivers premium full-size truck comfort, smooth diesel-style torque, and practical 4WD capability for drivers who want more than just a plain work truck. Powered by a 3.0L I6 engine and paired with a 10-speed automatic…The 2021 GMC Sierra 1500 SLT in Onyx Black with Jet Black interior delivers premium full-size truck comfort, smooth diesel-style torque, and practical 4WD capability for drivers who want more than just a plain work truck. Powered by a 3.0L I6 engine and paired with a 10-speed automatic transmission, this Sierra SLT offers confident towing and hauling ability, composed highway manners, and the kind of upscale everyday drivability that makes it feel equally at home on the ranch, the road, or the jobsite. With 90,275 miles, this Crew Cab still brings strong value, broad buyer appeal, and premium truck utility in a package that knows how to work without feeling stripped down.
Entertainment and Connectivity Features
• Large touchscreen infotainment display
• Apple CarPlay integration
• Android Auto integration
• Bluetooth hands-free connectivity
• USB charging and media ports
• Steering wheel mounted audio and phone controls
• Voice recognition capability
• Wi-Fi hotspot capability
• Navigation capability
• Digital driver information display
Added Features
• SLT trim package
• Onyx Black exterior
• Jet Black interior
• Four-wheel drive capability
• 3.0L I6 performance
• Crew Cab configuration
• Premium interior appointments
• Strong towing and hauling appeal
• Broad personal-use and work-truck versatility
• Clean upscale GMC styling
Safety Features
• Automatic Emergency Braking
• Forward Collision Alert
• Lane Keep Assist with Lane Departure Warning
• Following Distance Indicator
• HD rear vision camera
• Electronic Stability Control
• Anti-lock braking system
• Tire pressure monitoring system
• Advanced airbag system
• Teen Driver capability
Standard Features
• LED headlamps and LED daytime running lights
• Premium alloy wheels
• Dual-zone automatic climate control
• Power windows and door locks
• Push-button start capability
• Spacious Crew Cab interior
• Fold-up rear seating for added interior flexibility
• Tilt and telescoping steering wheel
• Rear seat air vents
• SLT-specific upscale styling accents
Mechanical Features
• 3.0L I6 engine
• 10-speed automatic transmission
• Four-wheel drive
• Heavy-duty suspension capability
• Four-wheel disc brakes
• Electric power steering
• Strong towing and hauling performance
• Smooth power delivery for daily driving and heavy use
• Built for work, travel, and everyday truck use
• Proven full-size truck practicality
Why drivers choose Port Lavaca Auto Group for their next vehicle
• Trusted dealership serving Texas drivers with transparent, pressure-free buying experiences
• Large selection of quality SUVs, trucks, and cars ready for immediate delivery
• Knowledgeable product specialists who help match drivers with the right vehicle
• Flexible financing options for a wide range of buyers
• Ongoing customer support and service after the sale
• Strong reputation backed by consistent five-star Google reviews
Customer Review Highlight
We shopped around quite a bit before buying, and Port Lavaca Auto Group stood out right away. They were professional, easy to talk to, and made sure everything was clear from start to finish.
Heather W., March 2026
From its practical 4WD capability and premium SLT trim to its roomy Crew Cab comfort and strong everyday truck utility, the 2021 GMC Sierra 1500 is built for drivers who want full-size truck strength, upscale comfort, and value in a pickup that still knows how to earn its keep.
(more)
Entertainment and Connectivity Features
• Large touchscreen infotainment display
• Apple CarPlay integration
• Android Auto integration
• Bluetooth hands-free connectivity
• USB charging and media ports
• Steering wheel mounted audio and phone controls
• Voice recognition capability
• Wi-Fi hotspot capability
• Navigation capability
• Digital driver information display
Added Features
• SLT trim package
• Onyx Black exterior
• Jet Black interior
• Four-wheel drive capability
• 3.0L I6 performance
• Crew Cab configuration
• Premium interior appointments
• Strong towing and hauling appeal
• Broad personal-use and work-truck versatility
• Clean upscale GMC styling
Safety Features
• Automatic Emergency Braking
• Forward Collision Alert
• Lane Keep Assist with Lane Departure Warning
• Following Distance Indicator
• HD rear vision camera
• Electronic Stability Control
• Anti-lock braking system
• Tire pressure monitoring system
• Advanced airbag system
• Teen Driver capability
Standard Features
• LED headlamps and LED daytime running lights
• Premium alloy wheels
• Dual-zone automatic climate control
• Power windows and door locks
• Push-button start capability
• Spacious Crew Cab interior
• Fold-up rear seating for added interior flexibility
• Tilt and telescoping steering wheel
• Rear seat air vents
• SLT-specific upscale styling accents
Mechanical Features
• 3.0L I6 engine
• 10-speed automatic transmission
• Four-wheel drive
• Heavy-duty suspension capability
• Four-wheel disc brakes
• Electric power steering
• Strong towing and hauling performance
• Smooth power delivery for daily driving and heavy use
• Built for work, travel, and everyday truck use
• Proven full-size truck practicality
Why drivers choose Port Lavaca Auto Group for their next vehicle
• Trusted dealership serving Texas drivers with transparent, pressure-free buying experiences
• Large selection of quality SUVs, trucks, and cars ready for immediate delivery
• Knowledgeable product specialists who help match drivers with the right vehicle
• Flexible financing options for a wide range of buyers
• Ongoing customer support and service after the sale
• Strong reputation backed by consistent five-star Google reviews
Customer Review Highlight
We shopped around quite a bit before buying, and Port Lavaca Auto Group stood out right away. They were professional, easy to talk to, and made sure everything was clear from start to finish.
Heather W., March 2026
From its practical 4WD capability and premium SLT trim to its roomy Crew Cab comfort and strong everyday truck utility, the 2021 GMC Sierra 1500 is built for drivers who want full-size truck strength, upscale comfort, and value in a pickup that still knows how to earn its keep.
(more)
Vehicle Details
Features
Safety
Safety
Rearview monitor
in dash
Check rear seat reminder
Child safety door locks
Child seat anchors
LATCH system
Camera system
rearview
Programmable safety key
Airbags
Airbag deactivation
occupant sensing passenger
Side airbags
front
Front airbags
dual
Side curtain airbags
front, rear
Security
Anti-theft system
alarm, vehicle immobilizer
Power door locks
anti-lockout, auto-locking
Mirrors
Side mirror adjustments
power, reverse gear tilt, power folding
Side mirrors
heated, driver side auto-dimming
Technology
Instrumentation
Warnings and reminders
low battery, lamp failure, low oil pressure, coolant temperature warning, low fuel level, maintenance due
Instrument cluster screen size
4.2 in.
Clock
Powertrain hour meter
Gauge
tachometer, oil pressure
Compass
Digital odometer
External temperature display
Multi-function display
Fuel economy display
MPG, range
Trip odometer
Audio System
Radio
voice operated, touch screen display, AM/FM
Auxiliary audio input
Bluetooth, USB, memory card slot, iPod/iPhone
Antenna type
diversity, mast
Total speakers
6
Radio data system
Speed sensitive volume control
Satellite radio
SiriusXM
Telematics
Electronic messaging assistance
with read function, voice operated
Satellite communications
voice guided directions, OnStar
Wi-Fi
hotspot
Driver assistance app
roadside assistance
Smart device app function
maintenance status
Smart device app compatibility
myGMC with Connected Access
Wireless data link
Bluetooth
Hands-free phone call integration
voice operated
In Car Entertainment
Connected in-car apps
Google POIs, Google search, app marketplace integration
Infotainment
GMC Infotainment System
Infotainment screen size
8 in.
Smartphone integration
wireless Apple CarPlay, wireless Android Auto
Exterior
Exterior Features
Active grille shutters
Pickup bed light
LED
Tailgate
power locking, power open, multi-function split-folding, removable, lift assist, step
Bumper detail
rear integrated corner step
Door handle color
chrome
Mirror color
chrome
Grille color
chrome, chrome surround
Exhaust tip color
stainless steel
Rear bumper color
chrome
Fender lip moldings
black
Window trim
chrome
Front bumper color
chrome
Lights
Daytime running lights
LED
Front fog lights
LED
Taillights
LED
Exterior entry lights
puddle lamps, approach lamps
Headlights
LED, wiper activated, auto delay off, auto on/off
Tires and Rims
Tire type
all season
Spare tire mount location
underbody
Spare wheel type
steel
Tire Pressure Monitoring System
Spare tire size
full-size
Wheels
aluminum alloy with painted accents
Windows
Window defogger
rear
Front wipers
variable intermittent
Tinted glass
Power windows
safety reverse
Interior
Seats
Driver seat power adjustments
height, 10, lumbar, reclining
Passenger seat power adjustments
height, 10, lumbar, reclining
Passenger seat
heated
Driver seat
heated
Rear headrests
3, foldable
Front headrests
2, adjustable
Front seat type
40-20-40 split bench
Rear seat type
60-40 split bench
Upholstery
leather-trimmed
Rear seat folding
folds up
Upholstery accents
perforated
Seatbelts
Seatbelt pretensioners
front
Seatbelt warning sensor
front
Rear seatbelts
3-point
Front seatbelts
3-point
Emergency locking retractors
front
Mechanical
Drivetrain
Drive mode selector
4WD type
part time w/ on demand setting
Axle ratio
3.23
Locking differential
rear
4WD selector
electronic
Engine
Auto start/stop
Battery saver
Battery
heavy duty, maintenance-free
Battery rating
730 CCA
Alternator
170 amps
Brakes
Rear brake type
ventilated disc
Front brake width
1.18
Rear brake diameter
14.2
Front brake diameter
13.6
Front brake type
ventilated disc
Braking assist
Electronic brakeforce distribution
ABS
4-wheel
Power brakes
Rear brake width
0.79
Suspension
Front suspension classification
independent
Rear suspension classification
solid live axle
Rear spring type
leaf
Front spring type
coil
Rear suspension type
multi-leaf
Rear shock type
twin-tube gas
Front struts
Front stabilizer bar
diameter 33 mm
Front suspension type
upper and lower control arms
Front shock type
twin-tube gas
Towing and Hauling
Tow hooks
front
Tow/Haul mode
Pickup bed cargo management
tie-down anchors
Trailer hitch
Trailer wiring
4-pin, 7-pin
Trailer brake controller
Stability and Traction
Stability control
Traction control
Hill holder control
Roll stability control
Trailer stability control
Comfort
Convenience Features
Power outlet(s)
USB front, USB rear, 115V cargo area, 12V rear, 12V front, 115V front
Power steering
electric,
Cupholders
front, rear
Memorized settings
2 driver, driver seat, side mirrors
Steering wheel
tilt and telescopic
One-touch windows
4
Reading lights
front
Cruise control
Multi-function remote
panic alarm, vehicle and key memory, proximity entry system
Power windows
lockout button
Steering wheel mounted controls
audio, cruise control, phone, multi-function, voice control
Push-button start
Vanity mirrors
dual illuminating
Assist handle
rear, front
Remote engine start/cabin preconditioning
Rearview mirror
auto-dimming
Easy entry
power driver seat
Storage
front seatback, under rear seats, door pockets, in seat cushion
Capless fuel filler system
Comfort Features
Floor mat material
carpet
Heated steering wheel
Steering wheel trim
leather
Door trim
simulated wood
Armrests
rear folding, rear center with cupholders, front center
Floor mats
rear, front
Floor material
carpet
Air Conditioning
Front air conditioning
automatic climate control
Front air conditioning zones
dual
Rear vents
second row
Air filtration
Specifications
Drive Type
Drive Type
4X4
4WD Hub Type
Pushbutton Hubs
Seating
Standard Seating
6
Max Seating
6
Head Room (front)
43 in
Head Room (rear)
40.1 in
Hip Room (front)
61.2 in
Hip Room (rear)
60.2 in
Shoulder Room (front)
66 in
Shoulder Room (rear)
65.2 in
Leg Room (front)
44.5 in
Leg Room (rear)
43.4 in
Seating Rows
2
Truck Specifications
Bed Length
69.9 in
Max Payload
2030 lbs
Measurements of Size & Shape
Length
231.7 in
Width
81.2 in
Width (without mirrors)
81.2 in
Height
75.5 in
Wheelbase
147.4 in
Ground Clearance
8.1 in
Track Width (front)
68.8 in
Track Width (rear)
68.3 in
Measurements of Weight
Gross Vehicle Weight Rating
7100 lbs
Gross Vehicle Weight Range
7001-8000 lbs
Curb Weight
5040 lbs
Gross Combined Weight Rating
15000 lbs
Base Towing Capacity
9200 lbs
Max Towing Capacity
11700 lbs
Performance Specifications
Turning Circle
46.3 ft
Fuel Tanks
Fuel Capacity
24.0 Gallons
Wheels and Tires
Front Tire Type
265/65R18
Front Wheel Diameter
18.0 x 8.5 in
Rear Tire Type
265/65R18
Rear Wheel Diameter
18.0 x 8.5 in
Testimonials
A big thank you to Mr. Mike for helping me out in finding me a New truck he was the first salesman to come up to me and help me out I 100% recommend Mike.
Big Mike is the man to deal with, he takes care of you and gets the deal done. Easy to work with and always willing to give a lending hand on making sure things gets done. Port lavaca dodge is where you can find “Big Mike” the sales man. Also the...
I have to say I’m not a very easy customer but Roland was very patient with me. It was more of I didn’t know how to make up my mind on which car I wanted and he made sure to get me the deal I wanted. I definitely recommend Roland if you are looking...
Dealership Information
Sales
Monday8:00am - 8:00pm
Tuesday8:00am - 8:00pm
Wednesday8:00am - 8:00pm
Thursday8:00am - 8:00pm
Friday8:00am - 8:00pm
Saturday8:00am - 8:00pm
SundayClosed
Service
Monday7:30am - 6:00pm
Tuesday7:30am - 6:00pm
Wednesday7:30am - 6:00pm
Thursday7:30am - 6:00pm
Friday7:30am - 6:00pm
Saturday8:00am - 3:00pm
SundayClosed
Parts
Monday8:00am - 5:00pm
Tuesday8:00am - 5:00pm
Wednesday8:00am - 5:00pm
Thursday8:00am - 5:00pm
Friday8:00am - 5:00pm
Saturday8:00am - 1:00pm
SundayClosed
Disclaimer
*All pricing and details are believed to be accurate, but we do not warrant or guarantee such accuracy. The prices shown above may vary from region to region, as will incentives, and are subject to change. Vehicle information is based off standard equipment and may vary from vehicle to vehicle. Call or email for complete vehicle information. All specifications, prices and equipment are subject to change without notice. Prices and payments do not include tax, titles, tags, finance charges, documentation charges, emissions testing charges, or other fees required by law, vehicle sellers or lending organizations.
Based on 2020 EPA mileage estimates, reflecting new EPA fuel economy methods beginning with 2008 models. Use for comparison purposes only. Do not compare to models before 2008. Your actual mileage will vary depending on how you drive and maintain your vehicle.
While every effort has been made to ensure display of accurate data, the vehicle listings within this website may not reflect all accurate vehicle items. Accessories and color may vary. All inventory listed is subject to prior sale. The vehicle photo displayed may be an example only. Vehicle Photos may not match exact vehicles. Please confirm vehicle price with Dealership. See Dealership for details.
*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.
Price valid through 07/15/2026