GMC Adds Power to AT4 With Off-Road Performance Package
GMC has just announced a new package for the new Sierra 1500 AT4 to help you get off-road a little faster than before. An all-new Off-Road Performance Package that adds power to the biggest of the Sierra’s V8s.
The base AT4 comes with the 5.3L V8 that puts out 355 hp. But the Off-Road Performance Package is only for the optional 6.2L V8. That engine starts out with 420 hp and 460 lb-ft of torque. With help from a new cat-back exhaust and an air intake, the Performance Pack offers up 435 hp and 469 lb-ft of torque. That’s 15 hp and 9 lb-ft more than standard. Shifting is handled by a 10-speed automatic.
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Also included in the Off-Road Performance Package are 18-inch alloys with Goodyear Wrangler DuraTrac off-road tires in 275/65R18 size.
On top of that, the AT4 comes with a host of off-road kit like a two-inch lift and Rancho shocks. It also has a locking rear differential and underbody skid plates for protection on the trail. The lightweight GMC carbon fiber box is optional.
The AT4 Off-Road Performance Package is available now, with an MSRP of $4,940. Though that price includes the 6.2L V8 and 10-speed, which are $2,495 if ordered alone.
From GMInsideNews.com
Evan moved from engineering to automotive journalism 10 years ago (it turns out cars are more interesting than fibreglass pipes), but has been following the auto industry for his entire life. Evan is an award-winning automotive writer and photographer and is the current President of the Automobile Journalists Association of Canada. You'll find him behind his keyboard, behind the wheel, or complaining that tiny sports cars are too small for his XXXL frame.
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