2024 GMC Sierra 2500 review

Research, photos, specs, and expertise

GMC Sierra 2500 highlights

Customer rating

(not yet rated)


  • Chassis suitable for heavy-duty work
  • Serious torque from the available engine options
  • Unique appearance from other trucks


  • Drives like it is heavy
  • Size can be difficult in tight environments
  • Friends will ask you to help them move house

Mileage (EPA estimate)

(data not available)

Pricing for current inventory

(no current inventory)


The truck that lets everyone know who is boss

Sometimes a light-duty pickup just doesn’t have what you need to get the job done. If that happens to you, check out the 2024 GMC Sierra 2500 for an upgrade in all areas. The comfort and tech are off the charts, but the focus here is really on the payload and towing. Powerful gas and diesel engine options deliver the torque, and brilliant trailering options keep it all visible and under control. If you regularly tow massive cargo but still want your people to ride in comfort, the GMC Sierra 2500 is your ideal truck.

All GMC Sierra 2500 years

What is new for the 2024 GMC Sierra 2500?

  • The Sierra 2500 is available in a new trim called the Denali Ultimate.
  • The AT4, Denali, Pro, SLE, and SLT trims have been discontinued for 2024.
  • Sierra 2500 trims have been upgraded with Automated Cruise Control, Sunroof(s), Seat Massagers, and Head Up Display as standard equipment this year.

5 reasons to buy the 2024 GMC Sierra 2500

1. Huge towing 

If you haul a sailboat to the lake, heavy equipment to a construction site, or longhorns to auction, this is the truck for you. Every trim level has standard trailer mirrors, and one of the options is a gooseneck/fifth-wheel hitch, so you know the Sierra 2500 isn’t messing around. Look for a Crew Cab long bed with the 6.6L diesel V8 and RWD for the biggest towing numbers. The 2024 GMC Sierra 2500 in this configuration has a maximum estimated towing capacity of 22,070 lbs when properly equipped. 

2. Passenger space 

The 2024 GMC Sierra 2500 seats up to six adults in the available Crew Cab. With 43-inches of headroom and 44.5-inches of legroom in the standard eight-way power front seats, everyone can get comfortable for a long road trip. The second row is generous as well, with 40-inches of headroom and 43.4-inches of legroom. The optional heated and ventilated seats let everyone set their preferred temp, and storage cubbies below, behind, and in-between the seats offer smart storage solutions.  

3. HD engines 

The GMC Sierra 2500 offers two engine options, both of them powerful V8s. The base engine is a 6.6L gas V8 making 401 horsepower and 464 lb-ft of torque at 4,000 rpm. This engine is paired with a six-speed automatic transmission and is perfect for everyday work and towing. The optional engine is the same size, but this time it's a 6.6L turbodiesel V8. It makes 445 hp and an incredible 910 lb-ft at just 1,600 rpm. The diesel pairs with a professional grade Allison® 10-speed automatic transmission for effortless heavy towing. 

4. AT4X for off-road 

Job site off the paved road? AT4X has what you need. Exclusive wheels and a 1.5 lift can tackle any amount of mud, and front and rear locking differentials ensure four-wheel traction. The AT4X gets Miltimatic dampers that electronically adjust to road conditions thousands of times per second. It’s proven tech from sports cars, and it lets the AT4X conquer any terrain or the roughest roads without beating up your passengers.  

5. Denali trim 

The ultimate trim package is far more than just chrome, although there are chrome recovery hooks, grille, and wheels standard here. Inside, check out the standard 10-way power seats with power lumbar supports. Other standard features include a Bose® premium sound system, cargo bed view camera, HD Surround Vision 360-degree camera, and ProGrade Trailering System. Options include a massively useful trailer tire pressure and temperature sensor package.

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Ratings & reliability

Customer ratings

The 2024 GMC Sierra 2500 is not yet rated. Help future customers learn about a car you've owned and write a review.

Above Average

RepairPal gave the GMC Sierra 2500 an overall reliability rating of 3 out of 5 stars, which RepairPal describes as Above Average. This rating ranks GMC Sierra 2500 10th out of 19 among Fullsize Trucks.

RepairPal reports that the average total annual cost for repairs and maintenance on a GMC Sierra 2500 is $840, compared to an average of $818 for Fullsize Trucks and $591 for all the vehicles RepairPal considered in its dataset.

According to RepairPal, GMC Sierra 2500 owners bring their vehicles into a repair shop for unscheduled repairs an average of 0.7 times per year, compared to an average of 0.9 times for Fullsize Trucks and 1.3 times for all the vehicles RepairPal considered in its dataset.

RepairPal reported that the probability of a repair being a severe or major issue is 22% for the GMC Sierra 2500, compared to an average of 22% for Fullsize Trucks and 14% for all the vehicles RepairPal considered in its dataset.

GMC Sierra 2500 features and specs

SLE 2WD 2D Regular Cab

Standard Features

  • ABS Brakes
  • Air Conditioning
  • Alloy Wheels
  • AM/FM Stereo
  • Android Auto
  • Apple CarPlay
  • Automatic Transmission
  • Auxiliary Audio Input
  • Bluetooth Technology
  • Cloth Seats
  • Cruise Control
  • Long Bed
  • Overhead Airbags
  • Power Locks
  • Power Mirrors
  • Power Windows
  • Satellite Radio Ready
  • Side Airbags
  • Tow Hitch
  • Traction Control
  • 20 Inch Plus Wheels
  • Bed Cover
  • Bed Liner
  • Blind Spot Monitor
  • Gooseneck Tow Hitch
  • Lane Departure Warning
  • Parking Sensors
  • Power Seat(s)
  • Rear Defroster
  • Rear View Camera
  • Remote Start
  • Running Boards

Drive Wheels

Rear Wheel Drive (2WD)

Engine size




Torque (ft-lbs)


Engine type


Fuel capacity




Overall length






Leg room

F 44.53"

Head room

F 43.11"

Front tires


Rear tires


Seating capacity




2024 GMC Sierra 2500 FAQ

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