What is the difference between the GMC Sierra and Chevy Silverado?

The Sierra 1500 and Silverado 1500 share the same underlying platform, engines, and powertrain — but the Sierra is positioned as the more premium offering. The Sierra features more upscale interior materials, distinct exterior styling, and exclusive trims not available on the Silverado, including the Denali luxury trim and the AT4 off-road trim. The Silverado has its own off-road trim (Trail Boss) and tends to be priced slightly lower in the used market.

What is the GMC Sierra Denali?

The Denali is GMC's top-tier luxury trim for the Sierra 1500, featuring premium interior materials, exclusive exterior badging, a signature chrome grille, and the highest level of technology and comfort features in the lineup. In the used market, Denali trims command a premium over base and mid-level trims due to their feature content and strong buyer demand.

What is the GMC Sierra AT4?

The AT4 is GMC's off-road trim for the Sierra 1500, introduced in 2019. It includes a factory 2-inch lift, Rancho shocks, skid plates, hill descent control, and an off-road-tuned suspension. The AT4 competes directly with the Silverado Trail Boss and Ford F-150 Tremor in the light-duty off-road segment. A more capable AT4X variant was added in later model years.

What engines are available in the used GMC Sierra 1500?

The used Sierra 1500 market is dominated by the 5.3L EcoTec3 V8, which covers the majority of SLE, SLT, and AT4 trims. The 6.2L EcoTec3 V8 is available on higher trims including the Denali and provides the highest towing and performance output. Newer models also offer a 2.7L turbocharged four-cylinder. The 5.3L V8 is the most common and practical choice for most buyers.

Is the GMC Sierra 1500 reliable?

The Sierra 1500 shares its powertrain and platform reliability with the Silverado 1500 — generally strong, with the 5.3L V8 being a proven engine across hundreds of thousands of vehicles. The main issue to watch on pre-2021 models is the Active Fuel Management (AFM) system, which can cause lifter failures on high-mileage examples. Many owners and shops address this proactively with a DOD delete kit. Post-2021 models moved to the improved Dynamic Fuel Management (DFM) system.

GMC Sierra 1500 Trucks for Sale near Secaucus, New Jersey

Used 2020 GMC Sierra 1500 AT4 Crew Cab

$31,606 List Price

$27,562

speed 165,271 mi

sell

Key features

Gasoline
4WD
AT4

location_on

Long-Lewis Ford of Hoover

Hoover, AL (869.9 mi)

Used 2022 GMC Sierra 1500 Denali Crew Cab

$45,790 List Price

$41,970

speed 80,167 mi

sell

Key features

Diesel
4WD
Denali

location_on

Long-Lewis Ford of Hoover

Hoover, AL (869.9 mi)

Used 2014 GMC Sierra 1500 SLT Crew Cab

$20,771 List Price

$19,969

speed 133,431 mi

sell

Key features

Gas/E85
4WD
SLT

location_on

Long-Lewis Ford of Hoover

Hoover, AL (869.9 mi)

Used 2017 GMC Sierra 1500 SLT Crew Cab

contact for price

speed 70,142 mi

sell

Key features

Gasoline
4WD
SLT

location_on

Long-Lewis Ford of Hoover

Hoover, AL (869.9 mi)

Used 2025 GMC Sierra 1500 SLT Crew Cab

$38,596

speed 61,870 mi

sell

Key features

Gasoline
4WD
SLT

location_on

Schicker Ford of St. Louis

St Louis, MO (874.7 mi)

Used 2021 GMC Sierra 1500 FL Double Cab

$16,620

speed 148,559 mi

sell

Key features

Gasoline
4WD
Fleet/Base

location_on

Schicker Ford of St. Louis

St Louis, MO (874.7 mi)

Used 2016 GMC Sierra 1500 SLT Crew Cab

$22,620

speed 118,648 mi

sell

Key features

Gasoline
4WD
SLT

location_on

Schicker Ford of St. Louis

St Louis, MO (874.7 mi)

Used 2023 GMC Sierra 1500 AT4 Crew Cab

$42,868

speed 86,143 mi

sell

Key features

Diesel
Duramax 3L I-6 direct injection, DOHC, variable valve control, intercooled turbo, diesel, engine with 305HP
4x4

location_on

Murray Ford of Starke

Starke, FL (878 mi)

Used 2024 GMC Sierra 1500 Denali Ultimate Crew Cab

$53,062

speed 47,152 mi

sell

Key features

Gasoline
EcoTec3 6.2L V-8 direct injection, variable valve control, premium gasoline, engine with cylinder deactivation and 420HP
4x4

location_on

Murray Ford of Starke

Starke, FL (878 mi)

Used 2024 GMC Sierra 1500 Elevation Crew Cab

$41,773

speed 21,291 mi

sell

Key features

Diesel
4WD
Elevation

location_on

Beck Ford

Palatka, FL (879.1 mi)

Used 2024 GMC Sierra 1500 AT4 Crew Cab

$53,042

speed 51,109 mi

sell

Key features

Gasoline
4WD
AT4

location_on

Beck Ford

Palatka, FL (879.1 mi)

Used 2013 GMC Sierra 1500 SLE Extended Cab

$14,076

speed 99,970 mi

sell

Key features

Gas/E85
RWD
SLE

location_on

Beck Ford

Palatka, FL (879.1 mi)

New 2026 GMC Sierra 1500 Elevation Crew Cab

$55,688

sell

Key features

Gasoline
8 Cylinder Engine
4x4

location_on

McSweeney GMC Clanton

Clanton, AL (884.8 mi)

New 2026 GMC Sierra 1500 SLT Crew Cab

$58,888

sell

Key features

Gasoline
8 Cylinder Engine
4x4

location_on

McSweeney GMC Clanton

Clanton, AL (884.8 mi)

New 2026 GMC Sierra 1500 Denali Crew Cab

$70,638

sell

Key features

Gasoline
8 Cylinder Engine
4x4

location_on

McSweeney GMC Clanton

Clanton, AL (884.8 mi)

New 2026 GMC Sierra 1500 Pro Crew Cab

$40,478

sell

Key features

Gasoline
4 Cylinder Engine
4x2

location_on

McSweeney GMC Clanton

Clanton, AL (884.8 mi)

New 2026 GMC Sierra 1500 AT4 Crew Cab

$66,778

sell

Key features

Gasoline
8 Cylinder Engine
4x4

location_on

McSweeney GMC Clanton

Clanton, AL (884.8 mi)