2020 GMC Sierra HD vs. 2019 Chevrolet Silverado HD

Detailed Review, Specifications & Comparison

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Safety

The Sierra HD (except Base/SLE) offers optional Automatic Emergency Braking, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The Silverado HD offers an available collision warning system without the automated brake feature that would prevent or reduce the collision if the driver fails to react.

Full-time four-wheel drive is optional on the Sierra HD. Full-time four-wheel drive gives added traction for safety in all conditions, not just off-road, like the only system available on the Silverado HD.

The Sierra HD offers an optional Surround Vision to allow the driver to see objects all around the vehicle on a screen. The Silverado HD only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

To help make backing safer, the Sierra HD’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Silverado HD doesn’t offer a cross-path warning system.

Both the Sierra HD and the Silverado HD have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available lane departure warning systems and blind spot warning systems.

Reliability

To reliably power the ignition and other systems and to recharge the battery, the Sierra HD has a standard 170-amp alternator. The Silverado HD’s standard 150-amp alternator isn’t as powerful.

Engine

The Sierra HD’s 6.6 V8 produces 41 more horsepower (401 vs. 360) and 84 lbs.-ft. more torque (464 vs. 380) than the Silverado HD’s 6.0 V8.

Transmission

A 10-speed automatic is standard on the GMC Sierra HD Diesel, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the Silverado HD.

Tires and Wheels

For better traction, the Sierra HD’s optional tires are larger than the largest tires available on the Silverado HD (275/70R18 vs. 265/70R17).

Suspension and Handling

For a smoother ride and more stable handling, the Sierra HD’s wheelbase is longer than on the Silverado HD:

Sierra HD

Silverado HD

Extended Cab Standard Bed

149.4 inches

144.2 inches

Extended Cab Long Bed

162.5 inches

158.1 inches

Crew Cab Standard Bed

158.9 inches

153.7 inches

Crew Cab Long Bed

172 inches

167.7 inches

Passenger Space

The Sierra HD Double Cab has .2 inches more front headroom, .5 inches more front hip room, 1.2 inches more front shoulder room, 1.2 inches more rear headroom, .6 inches more rear legroom and .6 inches more rear shoulder room than the Silverado HD Double Cab.

The Sierra HD Crew Cab has .2 inches more front headroom, .5 inches more front hip room, 1.2 inches more front shoulder room, 2.5 inches more rear legroom and 1 inch more rear shoulder room than the Silverado HD Crew Cab.

Cargo Capacity

The Sierra HD Regular Cab has a much larger cargo box than the Silverado HD Regular Cab (83.5 vs. 76.3 cubic feet).

The Sierra HD Double Cab Standard Bed has a much larger cargo box than the Silverado HD Double Cab Standard Bed (69.5 vs. 61 cubic feet). The Sierra HD Double Cab Long Bed has a much larger cargo box than the Silverado HD Double Cab Long Bed (83.5 vs. 76.3 cubic feet).

The Sierra HD Crew Cab Standard Bed has a much larger cargo box than the Silverado HD Crew Cab Standard Bed (69.5 vs. 61 cubic feet). The Sierra HD Crew Cab Long Bed has a much larger cargo box than the Silverado HD Crew Cab Long Bed (83.5 vs. 76.3 cubic feet).

The Sierra HD’s cargo box is larger than the Silverado HD’s in almost every dimension:

Sierra HD Standard Bed

Sierra HD Long Bed

Silverado HD Standard Bed

Silverado HD Long Bed

Length

82.3”

98.3”

78.9”

97.8”

Max Width

71.4”

71.4”

64.6”

64.6”

Min Width

50.6”

51.9”

51”

51”

Height

21”

21”

21.1”

21.1”

Payload and Towing

The Sierra HD’s minimum standard towing capacity is much higher than the Silverado HD’s (16,410 vs. 13,900 pounds). Maximum trailer towing in the Chevrolet Silverado 3500 Crew Cab is only 23,100 pounds. The Sierra 3500HD Long Bed Regular Cab offers up to a 35,500 lbs. towing capacity.

The Sierra HD has a much higher standard payload capacity than the Silverado HD:

Sierra HD

Silverado HD

Crew Cab 2500HD

3579 lbs.

3233 lbs.

Crew Cab 3500HD

4316 lbs.

4052 lbs.

Extended Cab 2500HD 4x4

3576 lbs.

3093 lbs.

Crew Cab 2500HD 4x4

3589 lbs.

2943 lbs.

Crew Cab 3500HD 4x4

4365 lbs.

4058 lbs.

The Sierra HD has much higher optional payload capacities than the Silverado HD:

Sierra HD

Silverado HD

Extended Cab 2500HD

3792 lbs.

3276 lbs.

Crew Cab 2500HD

3800 lbs.

3233 lbs.

Extended Cab 2500HD 4x4

3792 lbs.

3276 lbs.

Crew Cab 2500HD 4x4

3862 lbs.

3186 lbs.

Crew Cab 3500HD 4x4

6610 lbs.

5761 lbs.

Ergonomics

The Sierra HD SLT/AT4/Denali offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Silverado HD doesn’t offer a heads-up display.

The Sierra HD’s power parking brake sets with one touch and releases with one touch or automatically. The Silverado HD’s parking brake has to released manually.

The Sierra HD SLT/AT4/Denali’s front power windows both open or close with one touch of the switches. The Silverado HD’s front passenger window doesn’t close automatically.

On a hot day the Sierra HD’s driver can lower all the windows from a distance using the keyless remote (optional feature). The driver of the Silverado HD can only operate the windows from inside the vehicle, with the ignition on.

Keyless Open and Start optional on the Sierra HD (except Base) allows you to unlock the doors, tailgate and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading cargo, getting in the vehicle in bad weather or making a hurried start to your trip. The Chevrolet Silverado HD doesn’t offer an advanced key system.

While driving with high beams on, sensitive light sensors available for the Sierra HD (except Base/SLE) detect other vehicles which could be blinded and automatically switch to low beams. The Silverado HD doesn’t offer automatic dimming high beams.

Both the Sierra HD and the Silverado HD offer available heated front seats. The Sierra HD also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Silverado HD.

Both the Sierra HD and the Silverado HD offer rear vents. For greater rear passenger comfort, the Sierra HD has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Silverado HD doesn’t offer rear air conditioning vents, only heat vents.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the GMC Sierra HD (except Base/SLE) offers an optional wireless phone charging system (Qi) in the center console. The Silverado HD doesn’t offer wireless personal charging.

Model Availability

The GMC Sierra HD comes in regular cab, extended cab and crew cab bodystyles; the Chevrolet Silverado HD isn’t available as a regular cab.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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