Key Takeaways
- The Sierra 1500 offers four engine choices, from the 2.7L TurboMax turbo four-cylinder up to the 3.0L Duramax I6 diesel, with towing capacities ranging from 9,400 to 13,300 lb.
- The Sierra 2500HD offers two engine choices, a 6.6L gas V8 and a 6.6L Duramax diesel V8, with towing capacities of 18,700 and 22,390 lb.
- The 2500HD's Duramax diesel produces 975 lb-ft of torque, more than double the strongest Sierra 1500 engine's torque output.
- Both trucks share the ProGrade Trailering System and HD Surround Vision with up to 14 camera views; the 2500HD adds Transparent Trailer View.
- The 2500HD offers AT4 and AT4X trims for off-road capability, plus a larger 12-speaker Bose Premium Series Sound System with Centerpoint surround sound.
- If you need to tow more than 13,300 lb, only the Sierra 2500HD's engines can get you there.
Whether you're a farmer, hunter, weekend thrill-seeker and adventurer, independent contractor, or active in the oil community as a drilling, well-service, or pipeline contractor, you know that having a reliable GMC pickup is critical. At Cummins GMC in Weatherford, OK, we've been helping customers choose between the GMC Sierra 1500 and 2500 for years, answering all their questions and ensuring they have all the information needed to make an informed decision.
For more than 40 years, Cummins GMC has been a mainstay in Weatherford, OK, providing exceptional sales, financing, and GMC truck maintenance services for customers throughout Western Oklahoma. With more than 10 years of GMC Mark of Excellence honors, we're perfectly positioned to help you decide between the always-popular, full-size, light-duty GMC Sierra 1500 and the always-powerful, full-size, heavy-duty GMC Sierra 2500.
Towing capacity by engine, all six configurations
Sierra 1500
Sierra 2500HD
Front three-quarter exterior
Sierra 1500
Sierra 2500HD
GMC Sierra 1500
The GMC Sierra 1500 comes with four engine options. These include the 2.7-liter TurboMax turbocharged 4-cylinder (310 hp / 430 lb-ft of torque), the 5.3-liter V8 (355 hp / 383 lb-ft of torque), the 6.2-liter V8 (420 hp / 460 lb-ft of torque), and the 3.0-liter Duramax Turbo-Diesel Inline-6 (305 hp / 495 lb-ft of torque).
- 2.7L TurboMax turbocharged 4-cylinder: 310 hp / 430 lb-ft and a 9,400-pound towing capacity.
- 5.3L V8: 355 hp / 383 lb-ft and an 11,200-pound towing capacity.
- 6.2L V8: 420 hp / 460 lb-ft and a 13,100-pound towing capacity.
- 3.0L Duramax Turbo-Diesel inline-6 (I-6): 305 hp / 495 lb-ft and a 13,300-pound towing capacity.
Of the engine options listed above, the 3.0-liter Duramax Turbo-Diesel I-6 has the highest towing capacity at 13,300 pounds and the highest payload rating at 2,230 pounds. All engine configurations are paired with a 10-speed automatic transmission except the TurboMax, which features an 8-speed automatic.
Cummins GMC customers have the option of adding the ProGrade Trailering System for maximum flexibility while integrating GMC's trailer brake controller and MultiPro six-function tailgate. However, the GMC Sierra 1500 isn't just a high-powered pickup—GMC has also ensured that this incredible truck features an expansive and comfortable interior.
The interior of the GMC Sierra 1500 includes a 13.4-inch GMC Premium Infotainment System, a multicolor 12.3-inch digital Driver Information Center, and a 15-inch digital Head-Up Display (HUD). With available leather seating, a welcoming cabin, a well-organized center stack, heated and ventilated seats, and an incredible 7-speaker Bose Premium Sound System with a Richbass woofer, it's easy to see why the GMC Sierra 1500 is such a favorite among Cummins GMC customers.
Finally, GMC has ensured that hitching and trailering are much simpler and safer thanks to its HD Surround Vision system, which provides up to 14 separate camera views.
- 13.4-inch GMC Premium Infotainment System
- 12.3-inch digital Driver Information Center
- 15-inch digital Head-Up Display (HUD)
- Available leather seating
- Heated and ventilated seats
- 7-speaker Bose Premium Sound System with Richbass woofer
- HD Surround Vision
- 14 separate camera views
- Helps with hitching and trailering
Interior and cabin
Sierra 1500
Sierra 2500HD
GMC Sierra 2500
With the GMC Sierra 2500, Cummins GMC customers have the choice of two engine configurations, both paired with an Allison 10-speed automatic transmission: a standard 6.6-liter V8 (401 hp / 464 lb-ft of torque) or a 6.6-liter Duramax Turbo-Diesel V8 (470 hp / 975 lb-ft of torque).
- 6.6L Gas V8: 401 hp / 464 lb-ft of torque and an 18,700-pound towing capacity.
- 6.6L Duramax Turbo-Diesel V8: 470 hp / 975 lb-ft of torque and a 22,390-pound towing capacity.
Engine bay
Sierra 1500
Sierra 2500HD
The GMC Sierra 2500 also provides the ProGrade Trailering System, trailering mirrors, and an integrated trailer brake controller alongside adaptive cruise control. A 14-inch infotainment display is paired with a 12.3-inch digital Driver Information Center, while an impressive 12-speaker Bose Premium Series Sound System features a Richbass woofer and Centerpoint surround sound.
The GMC Sierra 2500 enhances the utility of the 14-view camera system by adding Transparent Trailer View, which provides improved visibility when pulling a trailer. Combined with available premium leather, heated and ventilated seats, and AT4 and AT4X trims for improved off-road performance, drivers will thoroughly enjoy the GMC Sierra 2500.
- 14-inch infotainment display
- 12.3-inch digital Driver Information Center
- 12-speaker Bose Premium Series Sound System
- Richbass woofer
- Centerpoint surround sound
- HD Surround Vision
- 14 separate camera views
- Transparent Trailer View
Torque vs. horsepower, all six engine configurations
Bed and towing setup
Sierra 1500
Sierra 2500HD
Cabin technology, side by side
Sierra 1500
- 13.4-inch GMC Premium Infotainment System
- 12.3-inch digital Driver Information Center
- 15-inch digital Head-Up Display
- 7-speaker Bose Premium Sound System
- HD Surround Vision, 14 camera views
Sierra 2500HD
- 14-inch infotainment display
- 12.3-inch digital Driver Information Center
- 12-speaker Bose Premium Series Sound System
- HD Surround Vision + Transparent Trailer View
- AT4 / AT4X trims for off-road capability
Test Drive Either the GMC Sierra 1500 or GMC Sierra 2500 at Cummins GMC Today
Reading about these differences isn't nearly as exciting as taking one of these impressive trucks for a test drive. A hands-on test drive combined with a discussion of your specific towing needs, heavy-hauling tasks, and typical driving conditions will help you make the best choice.
If you would like to test drive the GMC Sierra 1500 or GMC Sierra 2500, call our sales team at 580-217-7612 or contact us today.
Frequently Asked Questions
Q. What's the maximum towing capacity of the Sierra 1500?
13,300 pounds, achieved with the 3.0L Duramax Turbo-Diesel I-6, which also provides the Sierra 1500's highest payload rating at 2,230 pounds.
Q. What's the maximum towing capacity of the Sierra 2500HD?
22,390 pounds, achieved with the 6.6L Duramax Turbo-Diesel V8, which produces 975 lb-ft of torque.
Q. What engines are available on the Sierra 1500?
Four options: a 2.7L TurboMax turbocharged 4-cylinder, a 5.3L V8, a 6.2L V8, and a 3.0L Duramax Turbo-Diesel I-6. All are paired with a 10-speed automatic transmission except the TurboMax, which uses an 8-speed automatic.
Q. What engines are available on the Sierra 2500HD?
Two options: a standard 6.6L gas V8 or a 6.6L Duramax Turbo-Diesel V8, both paired with an Allison 10-speed automatic transmission.
Q. Does the Sierra 2500HD have off-road trims?
Yes. The Sierra 2500HD is available in AT4 and AT4X trims for enhanced off-road performance, in addition to its standard heavy-duty capabilities.
Q. How can I test drive a Sierra 1500 or Sierra 2500HD at Cummins GMC?
Call our sales team at 580-375-6781 or contact us online, and we'll walk you through both trucks and set up a test drive based on the towing, hauling, and road surfaces you actually drive on.