What Is The AT4 Package On GMC?
Photo Source/Copyright: GMC
What is the AT4 package on GMC? It’s the brand’s off-road trim designation, shorthand for All-Terrain 4WD, positioned above the volume trims and below the Denali luxury tier. AT4 spans both the truck and SUV sides of the lineup. Below you’ll find the hardware AT4 models share, which vehicles offer it, how AT4 compares with AT4X, and who the package genuinely suits.
What Is the AT4 Package on GMC?
AT4 is the brand’s shorthand for All-Terrain 4WD (Four-wheel drive), and it identifies the off-road-focused trim within a given model’s lineup. On the Yukon, for example, the ladder runs Elevation, then AT4 and AT4 Ultimate, then Denali and Denali Ultimate.
That placement matters because AT4 adds trail hardware without stripping out the sophisticated cabin content buyers expect. The designation debuted on the 2019 Sierra 1500, replacing the earlier All Terrain package, and has since expanded well beyond trucks into the SUV side of the lineup.
What the AT4 Package Includes
The exact contents vary depending on the model, since a compact crossover and a heavy-duty pickup require different calibrations. Even so, a consistent core of off-road equipment defines the package wherever the badge appears.
- Lifted ride height → additional ground clearance over the comparable non-AT4 trim
- Off-road-tuned suspension → Rancho monotube shocks on Sierra 1500; Magnetic Ride Control on Yukon
- Underbody protection → skid plates and shields guarding front and transfer case components
- All-terrain tires → mounted on AT4-exclusive wheel designs
- Red front recovery hooks → rated attachment points for trail recovery
- AT4-exclusive drive modes → including selectable Terrain mode for low-speed crawling
Which GMC Models Offer AT4?
AT4 reaches across both the truck and SUV sides of the lineup, though the more extreme AT4X treatment remains truck-only. The table below shows where the package is offered and what sets each application apart.
| Model | Segment | AT4 Off-Road Highlights | AT4X Offered? |
|---|---|---|---|
| Canyon | Mid-size truck | 4WD with automatic locking rear differential; two-speed AutoTrac transfer case and shield; Advanced Hill Descent Control | Yes |
| Sierra 1500 | Full-size truck | 2-inch factory lift; off-road suspension with Rancho monotube shocks; underbody skid plate | Yes |
| Sierra HD | Heavy-duty truck | Off-Road Suspension Package with twin-tube Rancho shocks and skid plates; 20-inch gloss-black wheels | Yes |
| Sierra EV | All-electric truck | 2-inch additional ground clearance; red front recovery hooks; 4-Wheel Steer with CrabWalk | No |
| Terrain | Small SUV | Lifted ride height; front skid plate with steel underbody shield; AT4-exclusive Terrain mode | No |
| Acadia | Mid-size SUV | Active torque control AWD; off-road-tuned suspension; 18-inch wheels with all-terrain tires | No |
| Yukon | Full-size SUV | High approach angle front fascia with skid plate and red recovery hooks; Magnetic Ride Control; 20-inch wheels with all-terrain tires | No |
AT4 vs. AT4X: What Changes
AT4X is available on the Canyon, Sierra 1500, and Sierra HD, and nowhere else. Where it appears, it adds electronic locking differentials front and rear. However, the Sierra HD AT4X features a rear locker, Multimatic DSSV dampers, and larger off-road tires, including 35-inch Goodyear Territory MT rubber on the heavy-duty version.
The Canyon AT4X also carries a deeper factory lift than its AT4 counterpart. On the Terrain, Acadia, and Yukon, AT4 is the off-road ceiling, and the Yukon’s step up is AT4 Ultimate, which layers on luxury content rather than extra trail hardware for buyers who want the flagship treatment.
Is the AT4 Package Right for You?
What is the AT4 package on GMC? Whether it earns its keep comes down to where you actually drive. If unpaved roads, boat ramps, or rutted access trails are part of your routine, the lifted ride height, all-terrain tires, and available drive modes earn their place.
If the appeal is mainly visual, a comfort-focused trim may serve you just as well. Either way, AT4 doesn’t ask you to trade refinement, since heated and ventilated front seats, an available Head-Up Display, available HD Surround Vision, and embroidered AT4 head restraints are all part of the package.
Frequently Asked Questions
Q: What is the AT4 package on GMC?
A: It’s the brand’s off-road trim designation, shorthand for All-Terrain 4WD. AT4 is available on both trucks and SUVs. It sits between the comfort-oriented trims and the Denali luxury tier, pairing genuine off-road hardware with the premium interior appointments buyers expect from the brand.
Q: Does the AT4 package come with a factory lift?
A: The Sierra 1500 AT4 carries a two-inch factory lift, and the Sierra EV AT4 adds two inches of ground clearance. Other AT4 models use a lifted ride height that varies by vehicle. Check the specific model rather than assuming a single figure applies everywhere.
Q: What is the difference between AT4 and Denali?
A: AT4 is the off-road-focused trim, built around suspension, traction, and underbody protection. Denali is the luxury-focused trim, built around materials, technology, and comfort. Both deliver upscale interiors, and where each one lands in a model’s ladder depends on the vehicle you’re shopping for. On some models, the two sit close together.
Explore the GMC AT4 Lineup
What is the AT4 package on GMC? In practical terms, the clearest answer comes from the driver’s seat. Our team can walk you through the AT4 models on hand and arrange a test drive. Visit us to get started.
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