Allen Tillery Buick GMC | Specs

2027 GMC Sierra 1500 Specs Hot Springs AR

The 2027 GMC Sierra 1500 in Hot Springs, AR offers a 481-hp 6.6L V8 and Crew Cab beds with 62.9 or 71.7 cubic feet of cargo space.

Blue 2027 GMC Sierra 1500 Denali in a studio

Quick Answer

  • The 2.7L TurboMax reaches peak torque of 455 lb-ft at 3,000 rpm.
  • A 6.6L V8 Crew Cab AT4X 4WD with the short bed has a 6,050-lb base curb weight.
  • The EPA rates the 3.0L Duramax Sierra 2WD at 22 city and 27 highway mpg.
  • The 6.6L V8 has a 34-gallon fuel tank.

Engine and Powertrain Specifications

Engine output and axle ratio
EngineHorsepowerTorqueAxle ratio
2.7L TurboMax350 hp at 5,200 rpm455 lb-ft at 3,000 rpm3.42:1
5.7L V8402 hp at 5,500 rpm428 lb-ft at 4,300 rpm3.23:1
6.6L V8481 hp at 5,800 rpm501 lb-ft at 4,000 rpm3.23:1
3.0L Duramax305 hp at 3,750 rpm495 lb-ft at 2,750 rpm3.23:1

The 10-speed automatic uses a 4.70:1 first gear and a 0.64:1 tenth gear. Both V8s use direct and port injection. The TurboMax has direct injection and a cast-aluminum block with iron liners. The Duramax is an inline-six with dual overhead camshafts and four valves per cylinder.

Exterior Dimensions and Vehicle Weights

Approximate length by cab and bed
Cab and drivetrainBedLength
Regular Cab 2WD/4WDStandard212.1 in
Regular Cab 2WD/4WDLong230.9 in
Double Cab 2WD/4WDStandard233.1 in
Crew Cab 2WD/4WDShort233.1 in
Crew Cab 4WDStandard242.6 in

GMC lists approximately 81.4 inches of body width and 96.9 inches with the mirrors included. Height ranges from about 75.2 to 79.6 inches, depending on trim and drivetrain. GMC shows a 147.44-inch wheelbase for the short-bed Denali Crew Cab. The short-bed AT4 Crew Cab 4WD has 11.92 inches of ground clearance in GM order-guide figures reported for that configuration.

GMC base curb weight examples
Engine and configurationCurb weight
2.7L Regular Cab 2WD, standard bed4,590 lbs
2.7L Crew Cab 4WD, short bed5,080 lbs
5.7L Crew Cab 4WD, short bed5,310 lbs
6.6L AT4X Crew Cab 4WD, short bed6,050 lbs
3.0L AT4X Crew Cab 4WD, short bed6,210 lbs
Gross vehicle weight rating examples
ConfigurationGVWR
Regular Cab 2WD, standard bed6,900 lbs
Double Cab 4WD, standard bed with Max Trailering7,450 lbs
AT4X Crew Cab 4WD, short bed7,500 lbs

Interior Dimensions and Cargo Bed Volume

Seating and front passenger space
CabMaximum seatingFront headroomFront legroom
Regular343.18 in44.37 in
Double542.67 in44.37 in
Crew643.07 in44.37 in

The Sierra cab and bed guide shows the short bed at 62.9 cubic feet, standard bed at 71.7 and long bed at 89.1. The long bed is a Regular Cab option. The Crew Cab offers a short bed in 2WD or 4WD and a standard bed in 4WD.

Interior of the 2027 GMC Sierra 1500 Denali with the dashboard and steering wheel

Wheels, Tires and Suspension

Examples of factory wheel and tire equipment
TrimEquipment
Pro17-inch steel wheels
Elevation20-inch gloss-black aluminum wheels
AT434-inch all-terrain tires and monotube shocks
AT4X35-inch mud-terrain tires and Multimatic DSSV dampers
Denali20-inch aluminum wheels and Adaptive Ride Control
Denali Ultimate22-inch diamond-cut aluminum wheels

EPA Fuel Economy and Fuel Tank Sizes

2027 U.S. EPA estimates
Engine and configurationCity mpgHighway mpgCombined mpg
5.7L V8 2WD151917
5.7L V8 4WD151816
5.7L V8 4WD mud-terrain tires141614
6.6L V8 4WD141815
6.6L V8 AT4X 4WD131514
3.0L Duramax 2WD222724
3.0L Duramax 4WD202321
3.0L Duramax 4WD mud-terrain tires202220
3.0L Duramax AT4X 4WD202221

GMC pairs the 6.6L V8 with a 34-gallon tank. The Duramax has a 24-gallon standard tank and an available 34-gallon tank on eligible trucks. The TurboMax uses 24 gallons in the configurations covered by the manual except the long box, which holds 28 gallons.

Key Features for Daily Driving

The 16.3-inch display in Elevation articulates to reveal a hidden storage compartment. Denali Ultimate adds an 11.5-inch front passenger display and a 15-inch head-up display. GMC lists electric rack-and-pinion steering and 13.5-inch front brake rotors in its chassis specifications.

Safety Equipment and Driver Assistance

Intersection Automatic Emergency Braking can assist when the truck detects a potential intersection collision. Rear Cross Traffic Braking can apply the brakes for detected traffic while reversing. The 2027 Sierra also includes Front Pedestrian and Bicyclist Braking and Adaptive Cruise Control.

GMC Limited Warranty Coverage

The bumper-to-bumper limited warranty covers qualifying defects for 3 years or 36,000 miles, whichever comes first. The typical GMC powertrain limited warranty is 5 years or 60,000 miles, whichever comes first, with terms depending on vehicle and engine.

2027 Sierra 1500 Dimensions in Practice

At approximately 242.6 inches long, a standard-bed Crew Cab 4WD takes about 9.5 inches more parking length than a short-bed Crew Cab. The 2-inch factory lift on AT4 and AT4X gives those trucks a different stance on Highway 7 and around the Ouachita Mountains.

Allen Tillery Buick GMC serves Arkadelphia, Hope and Bryant from 4573 Central Ave in Hot Springs, AR. Shoppers from Mena and El Dorado can call (501) 881-4160 to confirm which cab and drivetrain combinations are listed in Sierra 1500 inventory.

2027 GMC Sierra 1500 Specs FAQ

How wide is the 2027 GMC Sierra 1500?

GMC lists the Sierra at about 81.4 inches wide without mirrors and 96.9 inches with mirrors. Overall height varies from approximately 75.2 to 79.6 inches by trim and drivetrain. GMC lists the short-bed Crew Cab at approximately 233.1 inches long.

How much does a 2027 Sierra 1500 weigh?

A 2.7L TurboMax Regular Cab 2WD with the standard bed has a base curb weight of 4,590 lbs. GMC lists a 6.6L AT4X 4WD Crew Cab with the short bed at 6,050 lbs. Options and equipment affect the finished truck weight.

How much front legroom does the 2027 Sierra have?

GMC lists 44.37 inches of front legroom in Regular, Double and Crew Cab models. Front headroom varies with the cab. The published Crew Cab figure is 43.07 inches and the Double Cab has 42.67 inches. The Crew Cab can seat up to six.

What is the highway MPG of a 2027 Sierra 1500 diesel?

The EPA rates the 3.0L Duramax at 27 mpg highway in 2WD and 23 mpg highway in the regular 4WD listing. The separate AT4X diesel 4WD listing is rated 22 mpg highway. The diesel is offered with an available 34-gallon tank on eligible configurations.

What is the difference between curb weight and GVWR?

Base curb weight describes the truck itself in a stated configuration. GVWR is the maximum allowed weight for the loaded truck. GMC gives the short-bed AT4X a 7,500-lb GVWR. The 3.0L AT4X weighs 6,210 lbs at base curb weight.

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Allen Tillery Buick GMC is at 4573 Central Ave in Hot Springs.


May not represent actual vehicle. (Options, colors, trim and body style may vary)

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