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2020 GMC Sierra 2500HD AT4 Review

Driven by cheaper fuel prices and a resurgent appetite for all things large, the truck segment is in the midst of a renaissance like never before: they’re bigger, smarter, more capable and increasingly luxurious with jaw dropping price tags. And this one is a real monster – the all-new GMC Sierra Heavy Duty. I’ve driven some big trucks this year including Ram’s new 3500 dually Mega Cab but this one feels even more gargantuan. It’s the Sierra 2500 Heavy Duty; taller and longer than its predecessor and now available in AT4 livery for a little more off-road worthiness. You’ll need the various sidesteps, bumper steps and grab handles for this one because it’s just that large.

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2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra AT4

4WD - V8, 6.6L

Bandera, TX

65,217 miles

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Fleet/Base

4WD - V8, 5.3L

White/cloth black

Hazel Green, WI

Runde Auto Group

66,659 miles

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Walla Walla WA

2020 GMC Sierra Denali

4WD - V8, 6.6L

Walla Walla, WA

CDJR of Walla Walla

104,849 miles

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Westport MA

2020 GMC Sierra Fleet/Base

4WD - V8, 5.3L

Westport, MA

Prestige Auto Mart Westport

103,686 miles

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra Bandera TX

2020 GMC Sierra AT4

4WD - V8, 6.2L

Pacific Blue Metallic

Bandera, TX

123,254 miles

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra The Dalles OR

2020 GMC Sierra Denali

4WD - 6 Cyl, 3.0L

Pacific Blue Metallic

The Dalles, OR

Underriner Ford of the Dalles / Underriner Nissan of the Dalles

89,932 miles

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Denali

4WD - V8, 6.2L

Provo GMC Cadillac

39,598 miles

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra High Point NC

2020 GMC Sierra SLE

4WD - V8, 5.3L

High Point, NC

Ilderton Dodge Chrysler Jeep Ram

50,304 miles

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Wilmington IL

2020 GMC Sierra Denali

4WD - V8, 6.6L

Wilmington, IL

Contact seller

128,954 miles

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra West Bend WI

2020 GMC Sierra AT4

4WD - V8, 6.6L

West Bend, WI

Lynch Buick GMC of West Bend

129,335 miles

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Provo UT

2020 GMC Sierra Denali

4WD - V8, 6.6L

Carbon Black Metallic

Provo GMC Cadillac

75,850 miles

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra Post Falls ID

2020 GMC Sierra AT4

4WD - V8, 6.2L

Post Falls, ID

Knudtsen Chevrolet

102,457 miles

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra AT4

4WD - V8, 6.2L

Idaho Falls, ID

Timberline Auto

61,449 miles

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra New Britain CT

2020 GMC Sierra SLE

4WD - 6 Cyl, 3.0L

New Britain, CT

Prestige Auto Cars

47,769 miles

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra Hampton VA

2020 GMC Sierra SLT

4WD - V8, 5.3L

Hampton, VA

Nissan of Hampton

77,245 miles

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra Sumter SC

2020 GMC Sierra SLT

4WD - V8, 5.3L

59,948 miles

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra

2020 GMC Sierra Fleet/Base

4WD - V8, 6.6L; Turbo

Brotherton Cadillac Buick GMC

27,608 miles

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra Idaho Falls ID

2020 GMC Sierra SLT

4WD - 6 Cyl, 3.0L

Idaho Falls, ID

Timberline Auto

96,820 miles

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra SLT

4WD - V8, 5.3L

Karnes City, TX

43,040 miles

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra White Hall AR

2020 GMC Sierra SLT

4WD - V8, 6.2L

White Hall, AR

Smart Chevrolet Buick GMC

96,749 miles

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra Fruitland ID

2020 GMC Sierra AT4

4WD - V8, 6.6L

Carbon Black Metallic

Fruitland, ID

Stateline Auto Ranch Subaru

31,590 miles

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra Karnes City TX

2020 GMC Sierra SLT

4WD - V8, 5.3L

Karnes City, TX

36,785 miles

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra Beckley WV

2020 GMC Sierra AT4

4WD - V8, 6.2L

Beckley, WV

Dutch Miller Buick GMC Beckley

60,541 miles

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra Hazel Green WI

2020 GMC Sierra AT4

4WD - V8, 6.2L

Pacific Blue Metallic

Hazel Green, WI

Runde Auto Group

53,787 miles

Vehicles 24 - 182

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