Vehicle highlights
- 4WD
- Apple CarPlay
- Android Auto
- Blind Spot Warning
- Leather Seating
- Cruise Control
Price and listing details
Price breakdown
- MSRP
- $70,555
- List price
- $63,470
- Fees, rebates & discounts
- -$5,837
- Advertised price
- $57,633
This is the net difference between the list and advertised prices. It may include fees, rebates, discounts, or other dealer adjustments. Confirm details and eligibility with the dealer.
Mandatory dealer charges are included in this advertised price. The dealer did not provide Car Handshake with an itemized fee breakdown. View the dealer’s listing or contact the dealer for details. Taxes, title, registration, and other government charges are additional.
- Stock number
- 126234
- VIN
- 1GTUUDEL1TZ512236
- Seen in inventory
- Listing updated
Confirm availability and transaction details with the dealership.
Specifications
Overview
- Year
- 2026
- Make
- GMC
- Model
- Sierra 1500
- Trim
- SLT
- Condition
- New
- Body
- Pickup
- Mileage
- 7 mi
Engine & drivetrain
- Fuel
- Gasoline
- Driveline
- 4WD
- Transmission
- Automatic
- MPG
- City 15 / Hwy 19
- Displacement
- 6200 cc
- Engine
- 6.2L V-8 direct injection, variable valve control, premium gasoline, engine with cylinder deactivation and 420HP
Exterior & interior
- Exterior color
- Black
- Interior color
- Black
Seating and powertrain
- Seats
- 6 seats
- Third row
- Not confirmed
- Powertrain
- Gasoline
Seat count does not confirm a third row. Check unconfirmed details with the dealership.
Features
39 listedSafety
10
- Blind Spot Warning
- Forward Automatic Emergency Braking
- Rear Cross Traffic Warning
- Lane Keep Assist
- Lane Departure Warning
- Surround View Camera
Show all 10 featuresShow fewer features
- Forward Collision Warning
- Pedestrian Automatic Emergency Braking
- Cruise Control
- Rear Seat Reminder
Comfort & interior
8
- Heated Front Seats
- Remote Start
- Leather Seating
- Ventilated Front Seats
- Heated Steering Wheel
- Push Button Start
Show all 8 featuresShow fewer features
- Power Driver Seat
- Keyless Entry
Technology
9
- Apple CarPlay
- Android Auto
- Built-in Navigation
- Wireless Phone Charging
- Bluetooth
- Satellite Radio
Show all 9 featuresShow fewer features
- Touchscreen Display
- Voice Control
- Digital Instrument Cluster
Exterior & utility
11
- Automatic High Beams
- Trailer Hitch
- Trailer Brake Controller
- Alloy Wheels
- Fog Lights
- Rain-Sensing Wipers
Show all 11 featuresShow fewer features
- Heated Mirrors
- Tinted Windows
- Trailer Sway Control
- Skid Plates
- Running Boards
Performance
1
- Engine Stop-Start
Dealer notes
Built to handle pavement, two-track, and everything the hitch can pull, this new 2026 GMC Sierra 1500 SLT Crew Cab 4WD is on the lot now at Napleton Buick GMC in Crystal Lake with delivery miles only. It arrives in Onyx Black with Jet Black perforated leather-appointed front outboard seating — a build that layers genuine off-road hardware onto a premium interior without asking you to give anything up.
Eight factory packages come on this truck, covering off-road protection, trailering, driver assistance, and in-cab comfort in one go.
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At a glance: 6.2L V8 · 10-speed automatic with Electronic Precision Shift · 4WD · Crew Cab · delivery miles only · Onyx Black exterior / Jet Black interior
The X31 Off-Road Package and X31 Off-Road and Protection Package together give this Sierra what it needs away from pavement: off-road suspension, skid plates, hill descent control, a two-speed electronic AutoTrac transfer case, a heavy-duty air filter, and dual active exhaust. Those mechanicals ride on 20-inch polished aluminum wheels wrapped in 275/60R20 all-terrain tires, backed by an auto-locking rear differential.
Chrome wheel-to-wheel assist steps from the SLT Premium Plus Package and a spray-on bedliner with GMC logo are already on — the truck is ready to load.
Towing is handled by the Preferred Equipment Group's integrated trailer brake controller and auxiliary external transmission oil cooler, the ProGrade Trailering System adds Hitch View and an in-vehicle trailering app, and the Sierra Safety Plus Package layers on HD Surround Vision, trailer side blind zone alert, trailer camera provisions, rear cross traffic braking, and front and rear park assist — a full trailering suite from the factory.
Adaptive cruise control from the SLT Preferred Package keeps highway towing calm on a long run.
Inside, the SLT Convenience Package adds ventilated driver and front passenger seats, a power rake-and-telescoping steering column, wireless charging, and the Bose 7-speaker premium sound system. Second-row outboard seats are heated.
The 13.4-inch GMC Infotainment System with Google built-in apps — including navigation and voice assistance — anchors a center stack that also supports wireless Apple CarPlay and Android Auto. A remote vehicle starter, keyless open and start, push-button start, universal home remote, and a 120-volt interior power outlet round out the comfort and convenience story.
Front rain-sensing wipers, deep-tinted glass, a rear sliding power window with defogger, perimeter lighting, and all-weather floor liners for the first and second rows take care of the details.
Napleton Buick GMC is at 6305 Northwest Hwy in Crystal Lake, on US-14 and the Metra UP-NW line — a straightforward drive from Algonquin, Lake in the Hills, McHenry, and Huntley. Family-owned for more than 80 years, we keep the process straightforward and pressure-free. If you want to put this Sierra to work, bring the trailer.
Dealership location
Napleton Buick GMC Crystal Lake
Dealer: Napleton Autos
6305 Northwest Highway, Crystal Lake, IL, 60014
