2026 GMC Sierra 1500 AT4

New · Mileage not listed · 4WD · Diesel · Pickup · Beaver Dam, WI · Seen in inventory Nov 15

Advertised price

$67,342

MSRP $75,155 · $7,813 below

Mandatory dealer charges are included; an itemized breakdown was not provided. Taxes, title, registration, and other government charges are additional.

Vehicle highlights

  • 4WD
  • Apple CarPlay
  • Android Auto
  • Blind Spot Warning
  • Backup Camera
  • Leather Seating

Price and listing details

Price breakdown
MSRP
$75,155
List price
$75,155
Fees, rebates & discounts
-$7,813
Advertised price
$67,342

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
232
VIN
1GTUUEE85TZ567631
Seen in inventory
Listing updated

Confirm availability and transaction details with the dealership.

Specifications

Overview

Year
2026
Make
GMC
Model
Sierra 1500
Trim
AT4
Condition
New
Body
Pickup

Engine & drivetrain

Fuel
Diesel
Driveline
4WD
Transmission
Automatic
MPG
City 22 / Hwy 26
Displacement
3000 cc
Engine
3L I-6 direct injection, DOHC, variable valve control, intercooled turbo, diesel, engine with 305HP

Exterior & interior

Exterior color
Black
Interior color
Black

Seating and powertrain

Seats
5 seats
Third row
Not confirmed
Powertrain
Diesel

Seat count does not confirm a third row. Check unconfirmed details with the dealership.

Features

46 listed

Safety

14
  • Backup Camera
  • Blind Spot Warning
  • Forward Automatic Emergency Braking
  • Rear Cross Traffic Warning
  • Lane Keep Assist
  • Parking Sensors (Front and Rear)
Show all 14 featuresShow fewer features
  • Lane Departure Warning
  • Surround View Camera
  • Forward Collision Warning
  • Pedestrian Automatic Emergency Braking
  • Cruise Control
  • Hill Start Assist
  • Rear Seat Reminder
  • Hill Descent Control

Comfort & interior

10
  • Heated Front Seats
  • Remote Start
  • Opening Sunroof
  • Leather Seating
  • Ventilated Front Seats
  • Heated Steering Wheel
Show all 10 featuresShow fewer features
  • Push Button Start
  • Power Driver Seat
  • Keyless Entry
  • Power Tilt/Telescoping Steering Wheel

Technology

11
  • Apple CarPlay
  • Android Auto
  • Built-in Navigation
  • Wireless Phone Charging
  • Head-up Display
  • Bluetooth
Show all 11 featuresShow fewer features
  • USB Ports
  • Satellite Radio
  • Touchscreen Display
  • Voice Control
  • Digital Instrument Cluster

Exterior & utility

10
  • Trailer Hitch
  • Trailer Brake Controller
  • Alloy Wheels
  • Fog Lights
  • Rain-Sensing Wipers
  • Heated Mirrors
Show all 10 featuresShow fewer features
  • Tinted Windows
  • Trailer Sway Control
  • Skid Plates
  • Running Boards

Performance

1
  • Engine Stop-Start

Dealer notes

A new 2026 GMC Sierra 1500 AT4 4WD — Onyx Black over a Jet Black with Kalahari Accents perforated leather interior — now at Napleton Chevrolet Buick GMC on Kellom Rd. in Beaver Dam. Where the sibling AT4s in this lot trade in breadth of equipment, this one makes its case differently: a Duramax 3.0L turbo-diesel inline-six matched to a 10-speed automatic, the Technology Package's rear camera mirror and multicolor 15-inch head-up display layered over a full off-road and trailering foundation, and a cabin that keeps the driver comfortable whether the destination is a boat launch near Horicon, a farm outside Mayville, or a long run down to Randolph.

At a glance: Duramax 3.0L turbo-diesel I6 · 10-speed automatic with Electronic Precision Shift · 4WD with 2-speed transfer case · 4-door pickup · new · Onyx Black exterior · Jet Black with Kalahari Accents perforated leather interior

Read moreShow less

The Technology Package adds the three items that separate this AT4 from a base build: a rear camera mirror that replaces the standard glass view with a wide, obstruction-free camera feed; a multicolor 15-inch diagonal head-up display that keeps speed, navigation and driver-assist data at eye level; and a bed view camera that makes hitching and loading measurably easier. The AT4 Premium Package brings in the power sunroof and the dealer-installed off-road high clearance steps, and the AT4 Preferred Package adds the power sliding rear window with rear defogger and a universal home remote.

The Preferred Equipment Group 4SB handles the trailering and off-road hardware. An integrated trailer brake controller and the In-Vehicle Trailering System app manage the hitch; HD Surround Vision and Hitch View cover the visual side of attaching and moving a load; trailer side blind zone alert and trailer camera provisions round out the trailering story.

Off-road capability comes from the AT4 suspension tuning, skid plates, red recovery hooks, hill descent control, auto-locking rear differential, heavy-duty air filter, and 275/60R20 all-terrain tires on 20x9 machined aluminum wheels. The spray-on bedliner with GMC logo and LED cargo lighting keep the box ready for work.

Inside, heated and ventilated front seats, heated second-row outboard seats, a Bose 7-speaker premium sound system, wireless charging, remote vehicle starter, and a 13.4-inch GMC Infotainment System with Google built-in round out a cabin that asks nothing more of a buyer's options list.

Napleton Chevrolet Buick GMC is at N8167 Kellom Rd. in Beaver Dam — about 45 minutes from Madison, an hour from Milwaukee, and 35 minutes from Fond du Lac, and a straight shot for drivers coming from Horicon, Mayville, or Randolph. The Napleton family has been in the automotive business for over 80 years, and the team here works without pressure.

When you're ready to look this truck over and talk diesel numbers, we'll have it ready.

Dealer-provided content. Verify specifications and availability directly with the dealership.

Dealership location

Napleton Chevrolet Buick GMC Beaver Dam

Dealer: Napleton Autos

N8167 Kellom Rd, Beaver Dam, WI, 53916