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Basics

Exterior color
Onyx Black
Interior color
Jet Black
Drivetrain
Rear-wheel Drive
MPG
20–23

Based on EPA mileage ratings. Use for comparison purposes only. Actual mileage will vary depending on driving conditions, driving habits, vehicle maintenance, and other factors.

Fuel type
Diesel
Transmission
10-Speed Automatic
Engine
3.0L I6 24V DDI DOHC Turbo Diesel
VIN
3GTP8CET9MG304800
Stock #
MG304800
Mileage
97,786 mi.

Features

Convenience
  • Heated Steering Wheel
  • Keyless Start
  • Remote Start
Entertainment
  • Apple CarPlay®
  • Bluetooth®
  • Premium Sound System
  • Satellite Radio
  • USB Port
Exterior
  • Alloy Wheels
  • Tow Hitch
Safety
  • Backup Camera
  • Brake Assist
  • Stability Control
Additional popular features:
Keyless Entry, LED Headlights, apple carplay/android auto, Heated Seats
View all features

Features

These features are associated with this vehicle type. Contact the seller to confirm this specific vehicle has them.

  • 1st and 2nd row curtain head airbags
  • 4 Door
  • 4 USB ports
  • 4-Wheel Disc Brakes
  • 4-wheel ABS Brakes
  • ABS and Driveline Traction Control
  • Anti-theft alarm system
  • Apple CarPlay/Android Auto mirroring
  • Audio System Premium Brand: GMC Infotainment System
  • Audio controls on steering wheel
  • Automatic front air conditioning
  • Black aluminum rims
  • Black grille w/body-color surround
  • Bluetooth wireless phone connectivity
  • Body-colored bumpers
  • Braking Assist
  • Climate Controlled : Driver and passenger heated
  • Clock : Digital
  • Cloth seat upholstery
  • Coil front spring
  • Compass
  • Cruise control
  • Cruise controls on steering wheel
  • Cupholders: Front and rear
  • Curb weight: 4,700 lbs.
  • Daytime running lights
  • Diameter of tires: 20.0"
  • Door pockets: Driver, passenger and rear
  • Door reinforcement: Side-impact door beam
  • Driver airbag
  • Dual front air conditioning zones
  • Dual illuminated vanity mirrors
  • Dusk sensing headlights
  • Engine immobilizer
  • External temperature display
  • Fixed antenna
  • Floor mats: Vinyl/rubber front and rear
  • Fold-up cushion rear seats
  • Front Head Room : 43.0 "
  • Front Hip Room: 61.2"
  • Front Independent Suspension
  • Front Leg Room: 44.5"
  • Front Shoulder Room: 66.0"
  • Front Stabilizer Bar : Bar
  • Front Ventilated disc brakes
  • Front and rear reading lights
  • Front fog/driving lights
  • Front split-bench
  • Front suspension stabilizer bar
  • Fuel Capacity: 24.0 gal.
  • Fuel Consumption: City: 20 mpg
  • Fuel Consumption: Highway: 23 mpg
  • Fuel Type: Regular unleaded
  • GMC Infotainment System
  • Gross vehicle weight: 6,800 lbs.
  • Headlights off auto delay
  • Heated driver mirror
  • Heated passenger mirror
  • Heated steering wheel
  • Independent front suspension classification
  • Instrumentation: Low fuel level
  • Intercooled Turbo
  • Keyless ignition w/ push button start & keyless door entry
  • LED Low/High Beam Reflector Headlights
  • Leaf rear spring
  • Leaf rear suspension
  • Leather/metal-look steering wheel trim
  • Left rear passenger door type: Conventional
  • Manual child safety locks
  • Metal-look dash trim
  • Mobile hotspot internet access
  • Overall Length: 231.7"
  • Overall Width: 81.2"
  • Overall height: 75.5"
  • Overhead console: Mini with storage
  • Passenger Airbag
  • Power remote driver mirror adjustment
  • Power remote passenger mirror adjustment
  • Power windows
  • Privacy glass: Deep
  • Radio Data System
  • Rear Head Room: 40.1"
  • Rear Hip Room: 60.2"
  • Rear Leg Room: 43.4"
  • Rear Shoulder Room: 65.2"
  • Rear View Camera
  • Rear center seatbelt: 3-point belt
  • Rear door type: Tailgate
  • Rear seats center armrest
  • Remote Engine Start : Keyfob remote start
  • Remote activated exterior entry lights
  • Remote power door locks
  • Remote window operation
  • Right rear passenger door type: Conventional
  • Rigid axle rear suspension
  • Seatback storage: 2
  • Seatbelt pretensioners: Front
  • Short and long arm front suspension
  • Side airbag
  • Simulated wood/metal-look door trim
  • SiriusXM AM/FM/Satellite Radio
  • SiriusXM Satellite Radio
  • SiriusXM Satellite Radio(TM)
  • Spare Tire Mount Location: Underbody w/crankdown
  • Speed-proportional electric power steering
  • Split rear bench
  • Stability controll with anti-roll
  • Steel spare wheel rim
  • Suspension class: Regular
  • Tachometer
  • Tilt and telescopic steering wheel
  • Tire Pressure Monitoring System: Tire specific
  • Tires: Prefix: P
  • Tires: Profile: 60
  • Tires: Speed Rating: S
  • Tires: Width: 275 mm
  • Total Number of Speakers: 6
  • Trailer hitch
  • Transmission hill holder
  • Trip computer
  • Two 12V DC power outlets
  • Type of tires: AS
  • Urethane shift knob trim
  • Variable intermittent front wipers
  • Vehicle Emissions: LEV II
  • Video Monitor Location: Front
  • Wheel Diameter: 20
  • Wheel Width: 9
  • Wheelbase : 147.4 "

Vehicle history by CARFAX

Accidents or damage
None reported
1-owner vehicle
Yes
Personal use only
Yes
The vehicle history information is supplied by third parties. Cars.com and the Seller are not responsible for the accuracy of such information. Cars.com provides this service and materials without representations or warranties of any kind, either expressed or implied. Please see Cars.com Terms and Conditions for further information.

Seller’s info

Group 1 GMC Southwest

(934 reviews)
10422 Southwest Fwy Bldg D, Houston, TX 77074

Seller’s notes about this car

Excellent Condition. EPA 30 MPG Hwy/23 MPG City! Heated Seats, Onboard Communications System, Satellite Radio, Back-Up Camera, Turbo Charged Engine, TRANSMISSION, 10-SPEED AUTOMATIC, ELE... Hitch, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6

KEY FEATURES INCLUDE
Serviced here, Originally bought here, Heated Driver Seat, Back-Up Camera, Satellite Radio, Onboard Communications System, Trailer Hitch, Aluminum Wheels Privacy Glass

OPTION PACKAGES
ENGINE, DURAMAX 3.0L TURBO-DIESEL I6 (277 hp [206.6 kW] @ 3750 rpm, 460 lb-ft of torque [623.7 N-m] @ 1500 rpm) (Includes (KW5) 220-amp alternator and (K05) engine block heater.), EBONY TWILIGHT METALLIC, AUDIO SYSTEM, GMC INFOTAINMENT SYSTEM WITH 8 DIAGONAL COLOR TOUCH-SCREEN, AM/FM STEREO with seek-and-scan and digital clock, includes Bluetooth® streaming audio for music and select phones; featuring wired Android Auto® and Apple CarPlay® capability for compatible phones (STD), TRANSMISSION, 10-SPEED AUTOMATIC

MARKET-BASED PRICING
You expect fair & competitive pricing. Thats why the price is based on current market data and is regularly compared to similar pre-owned vehicles in the region.

QUALITY INSPECTIONS
Every vehicle is thoroughly inspected and comes with a complimentary vehicle history report.

QUICK & TRANSPARENT FINANCING
Need Financing? Apply in minutes with all terms and conditions clearly disclosed upfront.

VEHICLE SERVICE CONTRACTS
Avoid bumps in the road! Adding a service contract can help prevent future unexpected expenses from arising. Available for most purchases.

WHY BUY FROM US
The team at Sterling McCall Buick GMC would like to welcome you to our dealership in Houston, where were confident youll find the vehicles youre looking for at a price you can afford. Come and check out our full selection of new Buick, GMC vehicles, or get a great deal on a reliable pre-owned model. No matter which vehicle you decide on, our professional finance team will help you get settled with a competitive financing or lease plan.

Fuel economy calculations based on original manufacturer data for trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.
It's just that easy at Sterling McCall GMC. Shop. Click. Drive. Be sure to mention that you've seen this vehicle on Cars.com

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Price history

Listed 32 days ago.
$700 total price reduction!
7/02/25 Listed $32,850
7/22/25 -$700 $32,150
Total price amount is based on price change information provided by the seller.

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Consumer reviews

See what others are saying about the 2021 GMC Sierra 1500.
(56 reviews)
Rating breakdown (out of 5):
  • Comfort 4.2
  • Interior 4.2
  • Performance 3.8
  • Value 3.6
  • Exterior 4.3
  • Reliability 3.5

Most recent consumer reviews

Bought a 2021 GMC Sierra SLT used 18k on it.

Bought a 2021 GMC Sierra SLT used 18k on it. Drove it 350 miles and the left band of lifter went bad,bent push rod and rocker arms. Got back and drove it about 300 miles and had the oil changed to make sure there was no metal in it from the work that was done. The next day I started up and it had 70+ pounds of oil pressur. Took it the dealer and now it is getting a new oil pump. This is a very nice truck to look at and drives nice but you should not have these kind of problems with a 50 thousand dollar truck. GM has paid fo6 all the fixes. Waiting to see what is next. Don't want to trade it in to give someone this problem. It suck to get a lemon.

Rating breakdown (out of 5):
  • Comfort 4.0
  • Interior 4.0
  • Performance 3.0
  • Value 3.0
  • Exterior 4.0
  • Reliability 1.0
  • Purchased a Used car
  • Used for Having fun
  • Does not recommend this car
3 people out of 3 found this review helpful. Did you?
Yes No

No recomiendo a nadie comprar GMC Denali antes de 70000

No recomiendo a nadie comprar GMC Denali antes de 70000 millas se daña el motor y antes de 80000 millas se daña las transmisión y el diferencial son pura belleza pero es un problema te cobran 14000 por el motor solo

Rating breakdown (out of 5):
  • Comfort 1.0
  • Interior 1.0
  • Performance 1.0
  • Value 1.0
  • Exterior 1.0
  • Reliability 1.0
  • Purchased a New car
  • Used for Transporting family
  • Does recommend this car
2 people out of 4 found this review helpful. Did you?
Yes No

This truck has a jerk when changing gears sometimes.

This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.

Rating breakdown (out of 5):
  • Comfort 5.0
  • Interior 5.0
  • Performance 4.0
  • Value 4.0
  • Exterior 5.0
  • Reliability 5.0
  • Does recommend this car
9 people out of 11 found this review helpful. Did you?
Yes No
See all 56 consumer reviews

Similar cars at this dealership

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2021 GMC Sierra 1500 Denali
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Bluetooth® is a registered mark of Bluetooth® SIG, Inc. Android Auto™ is a trademark of Google LLC. Apple CarPlay® is a registered trademark of Apple Inc. Burmester is a registered trademark of Burmester Audiosysteme GmbH, Berlin, Germany.

*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.

**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.

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