Welcome to Confidence Chevrolet Buick GMC, a Cavender Auto Family dealership. This vehicle is located at 6100 Tinker Diagonal, Midwest City, OK 73110. Here at Cavender, we build relationships based on trust and integrity to exceed your expectations in your ownership experience. Quite simply, we strive to Make Confidence Happen! So stop by and allow us to serve your automotive needs; we would love to meet you.
Coastal Dune 2026 GMC Sierra 2500HD AT4 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic
Features: AT4 Preferred Package (LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window with Defogger, and Universal Home Remote), AT4 Premium Plus Package (Power Sunroof), Gooseneck/5th Wheel Prep Package, Hitch Package, Preferred Equipment Group 4SB (120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, Bed View Camera with Two Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Deep-Tinted Glass, Electric Rear-Window Defogger, Floor-Mounted Center Console, Front Premium Floor Liners with Removable Carpet Insert, Front Rain-Sensing Wipers, Gloss Black Header Grille and Grille Insert Bars, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated Driver and Front Outboard Passenger Seats, Keyless Open and Start, LED Cargo Area Lighting, Manual Tilt-Wheel/Telescoping Steering Column, OnStar Services Capable, Power Front Passenger Windows with Express Up/Down, Push Button Start, Rear Cross Traffic Alert, Rear Premium Floor Liners with Removable Carpet Insert, Rear Wheelhouse Liners, Remote Vehicle Starter System, Safety Alert Seat, SiriusXM with 360L Trial Subscription, Spray-on Pickup Bedliner with GMC Logo, Steering Wheel Audio Controls, Trailer Cam Provisions and Trailer Viewing Software, Trailer Side Blind Zone Alert, Ultrasonic Front and Rear Park Assist, Unauthorized Entry Theft-Deterrent System, Ventilated Driver and Front Passenger Seats, Wireless Charging, and Wireless Phone Projection), Technology Package (Inside Rearview Auo-Dimming Rear Camera Mirror and Multicolor 15" Diagonal Head-Up Display), X31 Off-Road Package (Hill Descent Control and Off-Road Suspension), 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 10-Way Power Driver Seat Adjuster with Lumbar, 10-Way Power Passenger Seat Adjuster with Lumbar, 220-Amp Alternator, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic Emergency Braking, Automatic temperature control, Brake assist, Buckle to Drive, Bumpers: body-color, Cargo Tie-Down Rings (set of 4), Compass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electronic Stability Control, Emergency communication system: OnStar, Engine Block Heater, Exhaust Brake, Following Distance Indicator, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front Pedestrian Braking, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC MultiPro Tailgate Step Lights, Heated door mirrors, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp Battery, Hitch Guidance with Hitch View, Illuminated entry, in-Vehicle Trailering System App, IntelliBeam Automatic High Beam on/Off, Lane Departure Warning System, Low tire pressure warning, Memory seat, Occupant sensing airbag, Off-Road High Clearance Step, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Leather-Appointed Front Seat Trim, Pickup Box, Power door mirrors, Power Price includes: $500 - Purchase Allowance. Exp. 0
New 2026 GMCSierra 2500 HD AT4
- Exterior Color
- Coastal Dune
- Interior Color
- Jet Black
- Body/Seating
- Truck Crew Cab/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4x4
- Engine
- V-8 cyl
- VIN
- 1GT4UPEY6TF137779
- Stock Number
- TF137779
GMC
Sierra 2500 HD
Highlighted Features
- Lane departure
- Leather upholstery
- Automatic temperature control
- Emergency communication system
- Wireless phone connectivity
- Parking sensors
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera right
- Exterior parking camera rear
- Front dual zone A/C
- Auto high-beam headlights
Included Packages & Accessories
- Cargo Tie-Down Rings (set of 4)
- GMC MultiPro Tailgate Step Lights
- Winter Grille Cover
- Pickup Box
- Radio: AM/FM Stereo with Premium GMC Infotainment System
- Engine Block Heater
- Exhaust Brake
- 220-Amp Alternator
- Heavy-Duty 80 Amp Battery
- Trailer Tire Pressure Monitor Sensors
- Wheels: 20" High Gloss Black 8 Spokes Aluminum
- Hitch Package
- Perforated Leather-Appointed Front Seat Trim
- Buckle to Drive
- IntelliBeam Automatic High Beam on/Off
- Following Distance Indicator
- Forward Collision Alert
- Lane Departure Warning System
- Automatic Emergency Braking
- Front Pedestrian Braking
- Gooseneck/5th Wheel Prep Package
- 4-Wheel Disc Brakes
- Apple CarPlay/Android Auto
- Premium audio system: Premium GMC Infotainment System
- Emergency communication system: OnStar
- AM/FM radio: SiriusXM with 360L
- Auto High-beam Headlights
- Compass
- 7 Speakers
- Auto-dimming Rear-View mirror
- Ventilated front seats
- Variably intermittent wipers
- Turn signal indicator mirrors
- Trip computer
- Traction control
- Tilt steering wheel
- Telescoping steering wheel
- Steering wheel mounted audio controls
- Split folding rear seat
- Speed-sensing steering
- Speed control
- Security system
- Remote keyless entry
- Rear window defroster
- Rear step bumper
- Rear seat center armrest
- Rear reading lights
- Rain sensing wipers
- Power windows
- Power steering
- Power passenger seat
- Power driver seat
- Power door mirrors
- Passenger vanity mirror
- Passenger door bin
- Panic alarm
- Overhead console
- Overhead airbag
- Outside temperature display
- Occupant sensing airbag
- Memory seat
- Low tire pressure warning
- Illuminated entry
- Heated steering wheel
- Heated rear seats
- Heated front seats
- Heated door mirrors
- Fully automatic headlights
- Front wheel independent suspension
- Front reading lights
- Front fog lights
- Front dual zone A/C
- Front anti-roll bar
- Dual front side impact airbags
- Dual front impact airbags
- Driver vanity mirror
- Driver door bin
- Delay-off headlights
- Bumpers: body-color
- Brake assist
- Automatic temperature control
- Auto-dimming door mirrors
- Alloy wheels
- ABS brakes
- Voltmeter
- Tachometer
- Front Center Armrest
- Electronic Stability Control
- Air Conditioning
- SiriusXM with 360L Trial Subscription
- Preferred Equipment Group 4SB
- 10-Way Power Driver Seat Adjuster with Lumbar
- Driver Memory
- Power Sliding Rear Window with Defogger
- 10-Way Power Passenger Seat Adjuster with Lumbar
- Power Front Passenger Windows with Express Up/Down
- Deep-Tinted Glass
- Keyless Open and Start
- Rear Wheelhouse Liners
- Rear Premium Floor Liners with Removable Carpet Insert
- Front Premium Floor Liners with Removable Carpet Insert
- Push Button Start
- Remote Vehicle Starter System
- Electric Rear-Window Defogger
- Front Rain-Sensing Wipers
- Power Sunroof
- Spray-on Pickup Bedliner with GMC Logo
- Technology Package
- Floor-Mounted Center Console
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Gloss Black Header Grille and Grille Insert Bars
- Safety Alert Seat
- Hill Descent Control
- Wireless Charging
- Heated Driver and Front Outboard Passenger Seats
- Heated 2nd Row Outboard Seats
- 120-Volt Bed Mounted Power Outlet
- 120-Volt Instrument Panel Power Outlet
- Ventilated Driver and Front Passenger Seats
- Manual Tilt-Wheel/Telescoping Steering Column
- 2-Speed Active Transfer Case
- AT4 Premium Plus Package
- AT4 Preferred Package
- Wireless Phone Projection
- ProGrade Trailering System
- Hitch Guidance with Hitch View
- Trailer Cam Provisions and Trailer Viewing Software
- LED Smoked Amber Roof Marker Lamps
- 2 Charge/Data USB Ports Inside Center Console
- 2 USB Ports
- 2 Charge-Only Rear USB Ports
- Ultrasonic Front and Rear Park Assist
- OnStar Services Capable
- in-Vehicle Trailering System App
- LED Cargo Area Lighting
- Rear Cross Traffic Alert
- Universal Home Remote
- Steering Wheel Audio Controls
- Trailer Side Blind Zone Alert
- Bose Premium 7-Speaker Sound System
- Unauthorized Entry Theft-Deterrent System
- HD Surround Vision
- Multicolor 15" Diagonal Head-Up Display
- Bed View Camera with Two Trailer Camera Provisions
- Off-Road High Clearance Step
- X31 Off-Road Package
- Off-Road Suspension
- Front Bucket Seats
Included Packages & Options
- AT4 Premium Plus Package$4,035
- AT4 Preferred Package
- Power Sunroof
- Technology Package
- Off-Road High Clearance Step
- Technology Package$1,340
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- AT4 Preferred Package$405
- Universal Home Remote
- Power Sliding Rear Window with Defogger
- LED Smoked Amber Roof Marker Lamps
Included Options
- GMC MultiPro Tailgate Step Lights$250
- Engine Block Heater$100
- 220-Amp Alternator$150
- Trailer Tire Pressure Monitor Sensors$50
- Hitch Package$375
- Gooseneck/5th Wheel Prep Package$545
Detailed Specifications
- 1-touch down
- 1-touch up
- Adaptive Cruise Control
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Emergency communication system: OnStar
- Front beverage holders
- Front dual zone A/C
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start
- Remote keyless entry
- Speed control
- Surround View Monitor: HD Surround Vision w/Hitch View yes
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front wheel independent suspension
- Power steering
- Single rear wheels
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Primary LCD size: 13.4"
- Smart device integration: Apple CarPlay/Android Auto
- Speaker type: Bose
- Speakers: 7
- Steering wheel mounted audio controls
- Turn-by-turn navigation directions: OnStar Turn-by-Turn Navigation
- Wireless Phone Charger: front
- Wireless phone connectivity: Bluetooth
- Basic warranty: 36 months/36,000miles
- Corrosion perforation warranty: 72 months/100,000miles
- Maintenance warranty: 12 months/ unlimited distance
- Front center armrest
- Front seats: bucket
- Heated front seats
- Heated rear seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Cylinder configuration: V-8
- Drive type: four-wheel
- Engine liters: 6.6L
- Engine location: front
- Fuel tank capacity: 36.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 257mm (10.1")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Heated door mirrors
- Hitch Class: IV
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch
- Trailer sway control
- Turn signal indicator mirrors
- Engine displacement: 6.6 L
- Exterior body width: 2,079mm (81.8")
- Exterior height: 2,027mm (79.8")
- Exterior length: 6,369mm (250.8")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,659mm (65.3")
- Turning radius: 8.0m (26.3')
- Wheelbase: 4,039mm (159.0")
- Appearance: digital/analog
- Auto high-beam headlights
- Blind spot: Trailer Side Blind Zone Alert warning
- Compass
- Configurable
- Delay-off headlights
- Exterior parking camera cargo
- Exterior parking camera front
- Exterior parking camera left
- Exterior parking camera rear: HD Rear Vision Camera w/Hitch View yes
- Exterior parking camera right
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Lane departure: Lane Departure Warning warning
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Parking sensors: UltraSonic front and rear
- Rain sensing wipers
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Forward collision: Forward Collision Alert with Automatic Braking mitigation
- Front pedestrian detection: prevention
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Rear collision: Rear Cross-Traffic Alert warning
- Security system
- Traction control
Standard Features
- AT4 Preferred Package
- Power Sunroof
- Technology Package
- Off-Road High Clearance Step
- Inside Rearview Auo-Dimming Rear Camera Mirror
- Multicolor 15" Diagonal Head-Up Display
- Universal Home Remote
- Power Sliding Rear Window with Defogger
- LED Smoked Amber Roof Marker Lamps
- Safety Alert Seat
- Rear Cross Traffic Alert
- Trailer Side Blind Zone Alert
- Wireless Phone Projection
- Bose Premium 7-Speaker Sound System
- SiriusXM with 360L Trial Subscription
- Floor-Mounted Center Console
- Electric Rear-Window Defogger
- Push Button Start
- Remote Vehicle Starter System
- Keyless Open and Start
- Front Premium Floor Liners with Removable Carpet Insert
- Rear Premium Floor Liners with Removable Carpet Insert
- OnStar Services Capable
- 120-Volt Instrument Panel Power Outlet
- 120-Volt Bed Mounted Power Outlet
- 2 Charge-Only Rear USB Ports
- 2 USB Ports
- 2 Charge/Data USB Ports Inside Center Console
- Spray-on Pickup Bedliner with GMC Logo
- HD Surround Vision
- Bed View Camera with Two Trailer Camera Provisions
- Trailer Cam Provisions and Trailer Viewing Software
- Heated Driver and Front Outboard Passenger Seats
- Ventilated Driver and Front Passenger Seats
- Heated 2nd Row Outboard Seats
- Deep-Tinted Glass
- Gloss Black Header Grille and Grille Insert Bars
- Steering Wheel Audio Controls
- LED Cargo Area Lighting
- Manual Tilt-Wheel/Telescoping Steering Column
- Unauthorized Entry Theft-Deterrent System
- Power Front Passenger Windows with Express Up/Down
- Wireless Charging
- Ultrasonic Front and Rear Park Assist
- Rear Wheelhouse Liners
- Front Rain-Sensing Wipers
- X31 Off-Road Package
- ProGrade Trailering System
- 2-Speed Active Transfer Case
- 10-Way Power Driver Seat Adjuster with Lumbar
- 10-Way Power Passenger Seat Adjuster with Lumbar
- Driver Memory
- Hitch Guidance with Hitch View
- in-Vehicle Trailering System App
- Hill Descent Control
- Off-Road Suspension
Dealer Notes
KBB.com Consumer Reviews

Overall3.8Out of 5
- 2.0
Transmission trash
By Jason | on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk… - 3.0
Infotainment system unreliable!
By Brian C | on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another.… - 5.0
Fantastic truck
By Jjj | on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!…
Based on 13 consumer ratings for 2020–2025 models. | Privacy
- MSRP
- $89,585
- Dealer Discount
- -$89,085
- Sale Price
- $500
- Confidence Appearance Package*
- $89,085
- Price
- $84,874
- We're here to help: (405) 455-8243
*Image may not represent actual vehicle. Pricing may vary based on Trim Levels and Options. See Dealer for in-stock inventory and actual selling price. Owner's manual, second key or floor mats may not be available on all pre-owned vehicles. All prices plus applicable taxes, title & license, dealer processing fee of $599, and with approved credit. New vehicle MSRP includes delivery, processing, and handling fees. Prices may be different outside of each advertised period and do not necessarily reflect cash price at any other time. Inventory is subject to prior sale. While every reasonable effort is made to ensure the accuracy of this data, we are not responsible for typographical, technical, or misprint errors contained on these pages. Physically verify Trim Level and equipment before making purchase decision. Please contact us directly via phone or email, or visit in-person, to verify all information. **All images used are for illustrative purposes only**
- We're here to help: (405) 455-8243




