The GMC Sierra 2500HD is a three-quarter-ton heavy duty pickup truck from General Motors. It was introduced for the 2001 model year, distinct from the Sierra 2500 that preceded it in 1999. Both the Sierra 2500 and Sierra 2500HD, along with all other versions of the GMC Sierra, are corporate cousins of the Chevrolet Silverado pickup truck lineup.
While the Chevy versions of these trucks generally focus on consumer sales, the GMC versions are somewhat more upscale in design and finish, aligning with the brand’s “Professional Grade” marketing. Of course, both the Chevy and GMC versions of these trucks are also popular for fleet applications. Competitors include heavy-duty trucks based on the Ford F-150 and the Ram 1500 lineups.
The GMC Sierra 2500HD is known for being equipped, or at least offered, with many of the same current technology and comfort features available with the GMC Sierra 1500 and regular full size, non-heavy-duty trucks. That’s in contrast to some competitors, namely the Dodge RAM heavy-duty trucks, which rarely featured cutting-edge connectivity features and were offered with few cabin upgrades to improve comfort.
Keep in mind that the Sierra 2500HD generational hierarchy can be confusing, because it didn’t always align with the similar Chevrolet Silverado lineup or the regular GMC 2500 (non-HD).
GMC Sierra 2500HD Buying Guide: Cost, Reliability, and the Best Years to Buy
- Frequently Asked Questions
- GMC Sierra 2500HD Pros and Cons
- GMC Sierra 2500HD Generations
- Fourth Generation (2020-)
- Third Generation (2015-2019)
- Second Generation (2007-2014)
- First Generation (2001-2006)
Frequently Asked Questions
Which GMC Sierra 2500HD years are the best?
The later model years of the second-generation Sierra 2500HD are generally considered the best out there, particularly 2010 through 2014. That’s because these years have good reliability ratings, and the Duramax diesel engine, in particular, is known for being robust. However, some owners note that the dashboards in these model years were made of sub-par materials that were known to crack.
What are the worst GMC Sierra 2500HD years?
Experts advise avoiding the first generation of the Sierra 2500HD. Though some truck enthusiasts prefer this generation’s rugged styling, these years are known for poor reliability, primarily due to engine problems, as well as poor crash test scores. Additionally, the 2007 model year is noted for unreliability due to electrical problems, and the 2015 model year is prone to issues with the infotainment system that can cause further hiccups throughout the truck. Finally, fourth-generation models are known for issues with the MultiPro tailgate, check engine light problems (most prevalent in diesel models), rough shifting, infotainment and electrical system glitches, and problems with trailer brake controllers.
Is a used GMC Sierra 2500HD a good deal?
A used GMC Sierra 2500HD can be a good deal with proper preparation and research. Avoid model years with specific problems, unless the seller can demonstrate the issues have been rectified, or it’s something you’re comfortable tackling yourself, such as engine repair.
GMC Sierra 2500HD Pros and Cons
Pros:
- Wide range of model years
- Fairly straightforward trim lineups
- Good comfort amenities in later model years
Cons:
- Older versions may be in rough shape
- May be more expensive than rival trucks
- Rivals may be more powerful or have better towing capacity
GMC Sierra 2500HD Generations
Fourth Generation (2020-)
The fourth generation of the GMC Sierra 2500HD was introduced in 2019 for the 2020 model year. Compared with the related Chevy Silverado 2500HD, the Sierra version is offered in more trim levels, with a bigger range of upscale options and features. In particular, the Denali and Denali Ultimate trims are more luxurious than the Silverado version’s top-tier High Country trim. The trucks were refreshed for the 2024 model year and amenities are plentiful, with features such as Bluetooth, Android Auto, Apple CarPlay, and wifi hotspot accessibility with the GMC infotainment system that’s shared across the General Motors lineup. Available features include remote keyless entry, and rear-seat reminders, while more upscale models include touches such as a Bose Premium audio system, power-adjustable front seats, chrome grille trim, dual-zone automatic climate control, and power-folding tailgate options.
The Sierra 2500HD comes with a 6.6-liter V8 gas engine, paired with a six-speed automatic transmission. It’s available with a 6.6-liter Duramax turbodiesel V8 engine and a 10-speed automatic transmission from Allison. Rear- and four-wheel drive are available.
The GMC Sierra 2500HD is available in Pro, SLE, SLT, AT4, AT4X, Denali, and Denali Ultimate trim levels. The AT4 models add off-road hardware and accessories, such as skid plates, off-road suspension upgrades, and a more robust transfer case, while the Denali trims add luxury cabin features. Look here if you want a premium sound system, leather seats, or a heated steering wheel, but keep in mind these trucks had very high MSRPs when new. Available configurations include Regular Cab, Crew Cab, and Double Cab, cabin styles, paired with 7’ or 8’2” cargo bed options.
Fourth generation versions of the GMC Sierra 2500HD have numerous problems, so before you buy a used example, ask the owner if the vehicle has experienced the following issues. If you have the VIN, you can also check online to see if there are any open recalls to repair them under warranty. Problems include illuminated check engine lights caused by diesel particulate filters or emissions sensors, sluggish responses from the infotainment system, rough or delayed shifts, electrical system glitches, flaws in the MultiPro tailgate that can result in it becoming unlatched while driving, and faulty trailer brake controllers. These problems range in severity, but some are quite dangerous, and all should be carefully considered.
The fourth generation of GMC Sierra 2500HD is plentiful on the used market, and listings show that prices vary widely. Surprisingly, there are plenty of examples listed for about $25,000 to $30,000, far less than the average values shown by CarGurus pricing data. This generation sells for an average of about $52,000 to about $85,000, though the latter figure is for the 2025 model year, which may have very limited data points for used sales. In general, values for these trucks are down both year over year and over the past year, which isn’t unusual or particularly concerning, considering they’re in their peak depreciation years.
Third Generation (2015-2019)
The third generation of the GMC Sierra 2500HD coincided with the third-generation Silverado 1500 and the fourth-generation GMC Sierra 1500. The Sierra 2500HD and 3500HD were the first heavy duty pickups available with emerging safety features, such as forward-collision warning, lane-departure warning, and adaptive cruise control. Other notable features included a 110-volt AC household-style power outlet for small appliances and an eight-inch infotainment touchscreen. The Sierra 2500HD was also available with an All-Terrain package that was not available for the Chevy counterparts.
The third-generation GMC Sierra 2500HD was available with a 6.0-liter Vortec V8 gas engine and a 6.6-liter Duramax diesel V8 engine, both with six-speed automatic transmissions. Rear-wheel drive came standard and four-wheel drive was available.
This generation is available in Base, SLE, SLT, off-road AT4, and upscale Denali trims, and the latter brought a touch of sophistication to the heavy duty truck segment.
Configuration options include Regular Cab, Crew Cab, and Double Cab, with 6’5” or 8’ beds.
The widespread issues with the third generation Sierra 2500HD are similar to those that carried into the fourth generation. For example, these trucks are prone to electrical problems from flaws in wiring and sensors, hard-shifting automatic transmissions, and glitchy infotainment software and interfaces. Shoppers should also keep an eye out for signs of poor build quality, including inconsistent panel gaps, peeling paint, and premature rusting.
Average values of the third-generation Sierra 2500HD range from about $17,500 to about $43,000. As is consistent with this model of truck, values for this generation have decreased year over year and over the past year, but some model years have bounced back in value, slightly, based on recent sales. Older, high-mileage examples of the third generation GMC Sierra 2500HD can be listed for as little as about $10,500, while in general, more expensive or newer versions top out at around $70,000.
Second Generation (2007-2014)
The second-generation GMCSierra 2500HD was introduced in 2007. In 2011, it was updated with a higher-strength steel frame and a new suspension system.
The second-generation GMC Sierra 2500HD offered two V8 engines, a 6.0-liter Vortec gas engine and a 6.6-liter Duramax diesel. Both came with six-speed automatic transmissions. Rear-wheel drive was standard and four-wheel drive was available.
This generation of the GMC Sierra 2500HD is available in Base, Work Truck, SL, SLE, and SLT trims, and in Regular Cab, Crew Cab, and Extended Cab configurations. GMC offered 6’5” or 8’ beds.
Look for potential problems in the second generation of this GMC heavy duty truck, whether you’re buying a gas or a diesel version. Gas models are prone to issues with the EGR system, which leads to clogged exhaust components that can reduce performance and throw check engine lights. Meanwhile, diesel versions may have issues starting in cold weather due to glow plug failure. Problems with fuel leaks and transmission shifting are issues across the board, as well as prematurely worn suspension, brake, and electrical system components.
Sales data from CarGurus shows that this generation of GMC Sierra 2500HD is valued at averages of $18,000 to $27,000. These model years have generally slipped in average value year over year, though they show slight rebounds according to recent sales. Listings show older, high-mileage examples can go for as little as about $6,000, while newer versions with fewer miles on the odometer tend to top out at about $45,000, though there are a few with asking prices over $50,000.
First Generation (2001-2006)
The first-generation GMC Sierra 2500HD was actually introduced partway through the second generation of the GMC Sierra, long after the truck’ s name was established for the 1500 and 2500 models.
By the end of the first-generation GMC Sierra 2500HD, it was offered with three V8 engines. The lineup included a 6.0-liter Vortec gas V8 engine, an 8.1-liter V8 gas engine, and a 6.6-liter Duramax turbodiesel V8. Rear-wheel drive came standard and four-wheel drive was available. The base V8 was available with five-speed manual or six-speed automatic transmissions, while the bigger V8 and the diesel came with either a six-speed manual or six-speed Allison automatic transmission.
This generation can be found in Regular Cab, Extended Cab, and Crew Cab configurations, with 6’5” or 8’ beds. Trim levels include Work Truck, SL, SLE, and SLT.
Build problems in the first generation GMC Sierra 2500HD are compounded by age. Engine problems lead to poor reliability ratings, and these versions also didn’t do well in crash testing.
According to CarGurus pricing data, the average value of a 2006 GMC Sierra 2500HD, the last model year of the first generation, has an average value of about $20,000. Earlier models go for about $12,000 to about $17,000, on average, according to sales data. Generally, prices for this generation are down both year over year and over the last year, though a few have shown slight rebounds, in the single-digit percentages, based on recent sales. There are plenty of examples of this generation on the used market, ranging from about $3,500 to about $40,000.
