The 2012 GMC Sierra 3500HD is a heavy-duty pickup truck designed for serious work. Part of the second-generation Sierra HD line (2007-2014), it's available in regular, extended, and crew cab configurations. Key trims include the base, SLE, SLT, and Denali. New pricing ranged from approximately $30,000 to $50,000+. Its robust Duramax diesel engine option and impressive towing capacity made it popular among those needing a powerful workhorse.
The Good
The 2012 GMC Sierra 3500HD boasts formidable performance, particularly with the Duramax diesel. Its reputation for reliability appeals to practical buyers, while the available Denali trim offers a touch of luxury. Solid construction and high towing capacity instill confidence, a key emotional factor. It's a truck built to handle tough jobs with competence and, in higher trims, a degree of comfort.
The Bad
Potential weaknesses of the 2012 GMC Sierra 3500HD include fuel economy, especially with the gasoline engine. Some owners have reported issues with the diesel exhaust fluid (DEF) system and occasional electrical glitches. Rust can be a concern in certain climates. The interior, while functional, isn't as refined as some competitors.
2012 GMC Sierra 3500HD: Quick Overview
- Engine Options:
- 6.0L Vortec V8 (Gasoline): Standard engine.
- 6.6L Duramax Turbo-Diesel V8: Optional, high-performance engine.
- Horsepower:
- 6.0L Vortec V8: 360 hp
- 6.6L Duramax Turbo-Diesel V8: 397 hp
- Fuel Economy:
- Gasoline: EPA estimates not available (heavy-duty trucks are not rated). Expect low teens in city driving.
- Diesel: Expect around 13-16 mpg city/highway combined.
- 0-60 Times:
- Gasoline: Around 8-9 seconds (estimated)
- Diesel: Around 7-8 seconds (estimated)
- Towing Capacity:
- Up to 17,000 lbs (conventional towing)
- Up to 21,700 lbs (fifth-wheel/gooseneck towing)
- Trim-Level Features:
- Base: Vinyl upholstery, basic audio system, manual windows/locks.
- SLE: Cloth upholstery, power windows/locks, keyless entry, upgraded audio.
- SLT: Leather upholstery, dual-zone climate control, premium audio, remote start.
- Denali: Premium leather, heated seats, navigation, chrome exterior trim, unique styling.
2012 GMC Sierra 3500HD Specifications
Vehicle Information
| Year | 2012 |
| Make | GMC |
| Model | Sierra 3500HD |
| Trim | - |
| Style | Long Box 4WD |
| Type | Pickup Truck |
| Category | Standard Pickup Truck |
Manufacturing Details
| Made In | United States |
| Manufacturing City | ROANOKE |
Dimensions
| Doors | 2-Door |
| Curb Weight | 6092 pounds |
| Gross Vehicle Weight Rating | 10700 pounds |
| Overall Height | 77.40 inches |
| Overall Length | 225.00 inches |
| Overall Width | 95.90 inches |
| Wheelbase Length | 133.70 inches |
| Standard Seating | 3 |
Engine & Performance
| Engine | 6.6-L V-8 32V OHV Diesel |
| Engine Size | 6.6L |
| Engine Cylinders | 8 |
| Transmission | 6-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 6-Speed |
| Drivetrain | Four-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Recirculating |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $36,060 |
| Invoice Price | $35,536 |
| Delivery Charges | $995 |
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What Problems Does the 2012 GMC Sierra 3500HD Have?
Frequently reported problems for the 2012 GMC Sierra 3500HD often revolve around the diesel engine's emissions system, specifically the diesel exhaust fluid (DEF) system. Issues can include sensor failures, DEF pump malfunctions, and related error codes. These problems can lead to reduced engine power or even prevent the vehicle from starting.
Another common concern is the risk of fuel injector failure in the Duramax diesel, which can be costly to repair. Some owners have also reported issues with the turbocharger, particularly related to soot buildup.
Recalls for the 2012 model year may have addressed issues such as potential fuel leaks and problems with the brake system. It's important to check the vehicle's VIN for any outstanding recalls. Long-term reliability concerns include potential rust issues, particularly in areas with harsh winter conditions and road salt. Electrical glitches, while not widespread, have been reported by some owners.
Specifically, some 2011 and 2012 models experienced issues with the Allison transmission's torque converter clutch. Regular maintenance and proactive monitoring of the DEF system can help mitigate some of these concerns. Always check vehicle history reports for prior repairs and maintenance records.
Another common concern is the risk of fuel injector failure in the Duramax diesel, which can be costly to repair. Some owners have also reported issues with the turbocharger, particularly related to soot buildup.
Recalls for the 2012 model year may have addressed issues such as potential fuel leaks and problems with the brake system. It's important to check the vehicle's VIN for any outstanding recalls. Long-term reliability concerns include potential rust issues, particularly in areas with harsh winter conditions and road salt. Electrical glitches, while not widespread, have been reported by some owners.
Specifically, some 2011 and 2012 models experienced issues with the Allison transmission's torque converter clutch. Regular maintenance and proactive monitoring of the DEF system can help mitigate some of these concerns. Always check vehicle history reports for prior repairs and maintenance records.
How long will the 2012 GMC Sierra 3500HD last?
The 2012 GMC Sierra 3500HD, with proper maintenance, can easily reach 200,000 miles or more. Many owners report 10-15 years of reliable service. Durability largely depends on usage and maintenance. Trucks used primarily for heavy towing or commercial purposes may experience more wear and tear. Regular oil changes, transmission servicing, and cooling system maintenance are crucial. Weaknesses over time include potential rust, especially in northern climates, and wear on suspension components. The diesel engine, if properly maintained, tends to be very durable, but neglected emissions systems can shorten its lifespan.
What Technology & Safety Features are Included?
The 2012 GMC Sierra 3500HD offers a range of tech and safety features, though it's not as advanced as newer trucks. Standard features typically include a basic AM/FM radio, single-CD player, and auxiliary audio input. Higher trims add features like a Bose audio system, Bluetooth connectivity, and available navigation.
Driver-assistance features are relatively limited compared to modern vehicles. Available options included rear parking sensors and a rearview camera. Safety features include standard antilock brakes, stability control, and a suite of airbags.
Optional features varied by trim level. The SLT and Denali trims could be equipped with features like heated leather seats, a sunroof, and a power-adjustable driver's seat. A trailer brake controller was a popular option for those planning to tow heavy loads.
Crash-test ratings from the IIHS (Insurance Institute for Highway Safety) and NHTSA (National Highway Traffic Safety Administration) can vary depending on the cab configuration. It's recommended to consult these agencies' websites for specific ratings for the 2012 GMC Sierra 3500HD. The focus was more on utility and capability than on cutting-edge technology.
Driver-assistance features are relatively limited compared to modern vehicles. Available options included rear parking sensors and a rearview camera. Safety features include standard antilock brakes, stability control, and a suite of airbags.
Optional features varied by trim level. The SLT and Denali trims could be equipped with features like heated leather seats, a sunroof, and a power-adjustable driver's seat. A trailer brake controller was a popular option for those planning to tow heavy loads.
Crash-test ratings from the IIHS (Insurance Institute for Highway Safety) and NHTSA (National Highway Traffic Safety Administration) can vary depending on the cab configuration. It's recommended to consult these agencies' websites for specific ratings for the 2012 GMC Sierra 3500HD. The focus was more on utility and capability than on cutting-edge technology.
What Colors Options are Available?
Exterior Colors
Summit White
Onyx Black
Graystone Metallic
Steele Gray Metallic
Sheer Silver Metallic
Fire Red
Hunter Green Metallic
Dusk Blue Metallic
Interior Colors
Ebony
Dark Titanium
Light Cashmere/Dark Cashmere
2012 GMC Sierra 3500HD Prices and Market Value
When new, the 2012 GMC Sierra 3500HD ranged from approximately $30,000 for a base model to over $50,000 for a fully-equipped Denali. Current used market prices typically range from $20,000 to $40,000 depending on condition, mileage, and trim. Depreciation is influenced by factors like mileage, condition, engine (diesel models hold value better), and location. Well-maintained diesel trucks in good condition command higher resale prices. High mileage and significant wear and tear negatively affect resale value.
2012 GMC Sierra 3500HD Cost of Ownership
The 2012 GMC Sierra 3500HD is generally considered costly to own. Insurance premiums are higher due to its size and potential repair costs. Fuel economy is poor, especially with the gasoline engine. Maintenance costs are moderate, but diesel engine repairs can be expensive. Long-term ownership costs depend heavily on maintenance habits. Neglecting maintenance, especially on the diesel engine, can lead to significant repair bills. It's not an economical vehicle, but rather a tool for specific heavy-duty tasks.
2012 GMC Sierra 3500HD Fuel Efficiency
Fuel Type
Flex-Fuel (Unleaded/E85)
Fuel Capacity
36.00 gallons
City Mileage
-
Highway Mileage
-
2012 GMC Sierra 3500HD Safety Rating
NHTSA
IIHS
2012 GMC Sierra 3500HD Warranty
Basic
Original warranty
36 months / 36,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
60 months / 100,000 miles
Estimated remaining
Expired
Rust
Original warranty
72 months / 100,000 miles
Estimated remaining
Expired
2012 GMC Sierra 3500HD Insurance
Insurance for a 2012 GMC Sierra 3500HD is moderately priced, reflecting its status as a Pickup Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2012 GMC Sierra 3500HD Compare to Other Pickup Truck?
The 2012 GMC Sierra 3500HD competes with the Ford F-350 and the Ram 3500. In terms of performance, the Duramax diesel in the Sierra is comparable to Ford's Power Stroke and Ram's Cummins, all offering excellent towing capacity. Feature-wise, the Ram 3500 often had a slight edge in interior comfort and available tech. Reliability is generally similar across the three, though each has specific issues to watch for. Price-wise, they were typically closely matched.
The Ford F-350 is a strong alternative, particularly if you prefer Ford's styling or engine options. The Ram 3500 offers a more comfortable interior and, depending on the year, slightly more advanced tech.
Choosing between them often comes down to personal preference and specific needs. All three are capable trucks. If prioritizing a more comfortable ride, consider the Ram. For a proven workhorse with a strong reputation, the Sierra or F-350 are excellent choices. Thoroughly inspect any used truck regardless of brand, and prioritize one with documented maintenance history.
The Ford F-350 is a strong alternative, particularly if you prefer Ford's styling or engine options. The Ram 3500 offers a more comfortable interior and, depending on the year, slightly more advanced tech.
Choosing between them often comes down to personal preference and specific needs. All three are capable trucks. If prioritizing a more comfortable ride, consider the Ram. For a proven workhorse with a strong reputation, the Sierra or F-350 are excellent choices. Thoroughly inspect any used truck regardless of brand, and prioritize one with documented maintenance history.
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| 4 | 2020 Mercedes-Benz Sprinter Cab Chassis | (0.0★) |
| 5 | 2024 Chevrolet Silverado 3500HD | (0.0★) |
| 6 | 2023 Hyundai Santa Cruz | (5.0★) |
| 7 | 2023 Nissan Frontier | (5.0★) |
| 8 | 2024 GMC Sierra 2500HD | (0.0★) |
| 9 | 2023 Ram 4500 | (0.0★) |
| 10 | 2022 Jeep Gladiator | (5.0★) |
| 11 | 2012 Suzuki Equator | (0.0★) |
| 12 | 2009 Mitsubishi Raider | (5.0★) |
| 388 | 2012 GMC Sierra 3500HD | (0.0★) |
Final Verdict: Is the 2012 GMC Sierra 3500HD a Good Pickup Truck?
The 2012 GMC Sierra 3500HD is ideal for those needing a robust and capable heavy-duty truck for towing and hauling. It's a worthwhile purchase, especially used, if you require serious work capabilities and are willing to accept the associated ownership costs. Opt for a diesel model if heavy towing is frequent. Thoroughly inspect any used model, paying close attention to the diesel emissions system and overall condition. The SLE trim offers a good balance of features and value. A well-maintained example can provide years of reliable service, but be prepared for higher running costs compared to lighter-duty trucks.
Simon A
Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.