2024 GMC Sierra 1500 AT4

Truck · 6.2L V8 · 4WD

75/100

AutoVault's overall score, weighted for what a truck is actually for — performance, technology, comfort, reliability, safety and value.

Specifications

Engine	6.2L V8
Horsepower	420 hp
Torque	460 lb-ft
0–60 mph	6 sec
Top speed	112 mph
Drivetrain	4WD
Seats	5
Combined MPG	19 mpg (17 city / 22 hwy)
Range	418 miles
MSRP	$66,800
Body style	Truck

The verdict

What's good

Factory 2-inch lift and Multi-Matic DSSV dampers handle moderate trails without modifications
Super Cruise hands-free highway driving is class-leading for long-haul towing
Premium AT4 interior with leather and tech rivals Denali below it in spec
6.2L delivers noticeably stronger highway passing power than 5.3L trim levels

What's not

6.2L L87 engine was subject to a significant piston ring recall — verify build date
Firm off-road-tuned suspension transmits more cabin vibration on smooth pavement
AT4 pricing overlaps the more luxurious Denali — value proposition less clear
Turning radius with max-tow mirrors makes urban parking genuinely difficult

The engine

L87

6.2L V8

GMC's 6.2-liter small-block V8 delivers the deep, effortless torque that defines a full-size American truck — quiet when cruising, muscular when towing, in Denali and AT4X flagships.

A direct descendant of Chevrolet's 1955 small-block, this pushrod V8 pairs old-school simplicity with modern cylinder deactivation and direct injection.

It can run on just four cylinders when cruising to save fuel.
It shares its small-block roots with the Corvette's V8 lineage.

See the rest in AutoVault

The six sub-scores behind the 75 — performance, tech, comfort, reliability, safety and value
Market value today and year-by-year value history
All 8 trims with pricing
Studio photography — exterior, rear and interior
Side-by-side comparison with up to four cars

Open in AutoVault