The 2003 GMC Sierra is a full-size pickup truck, part of the second generation (1999-2007) of the Sierra. It came in various body styles, including regular, extended, and crew cabs, with short, standard, and long bed options. Key trims included the base, SLE, and SLT. The original MSRP ranged from around $20,000 to $35,000, depending on configuration and trim. It's popular for its ruggedness, capability, and a comfortable ride compared to some competitors.
The Good
The 2003 GMC Sierra offers a blend of performance and practicality. It boasts robust engine options for strong towing and hauling capabilities (practical). Its classic, muscular design and comfortable cabin appeal to emotional buyers. Known for overall reliability, it also provides good value for a dependable used truck.
The Bad
Common weaknesses of the 2003 GMC Sierra include potential issues with the fuel pump, transmission problems (especially with higher mileage), and rust, particularly in areas with road salt. Check for "Chevy lean" (uneven suspension), and listen for unusual noises from the engine or drivetrain. Interior plastics can be prone to wear.
2003 GMC Sierra: Quick Overview
- Engine Options:
- 4.3L V6: Around 200 horsepower
- 4.8L V8: Around 285 horsepower
- 5.3L V8: Around 295 horsepower
- 6.0L V8 (available on some models): Around 300-345 horsepower
- Horsepower: Ranging from 200 hp to 345 hp depending on the engine.
- Fuel Economy:
- V6: 15-17 mpg city / 19-22 mpg highway
- V8: 14-16 mpg city / 17-20 mpg highway (varies based on engine and configuration)
- 0-60 Times: Varies significantly by engine and configuration. Expect around 7-9 seconds for V8 models. V6 models will be slower.
- Towing Capacity:
- Ranges from approximately 4,000 lbs to over 8,000 lbs depending on engine, cab configuration, and drivetrain (2WD or 4WD). Always refer to the owner's manual for exact figures.
- Trim-Level Features:
- Base: Vinyl or cloth seats, basic AM/FM radio, manual windows and locks.
- SLE: Cloth seats, power windows and locks, upgraded stereo, available options like cruise control and keyless entry.
- SLT: Leather seats, premium stereo, dual-zone climate control, alloy wheels, and often included many of the available options from the SLE trim.
2003 GMC Sierra Specifications
Vehicle Information
| Year | 2003 |
| Make | GMC |
| Model | Sierra |
| Trim | - |
| Style | - |
| Type | Truck |
| Category | Standard Pickup Truck |
Manufacturing Details
| Made In | Canada |
| Manufacturing City | TILLSONBURG |
Dimensions
| Doors | 4-Door |
| Curb Weight | 5013 pounds |
| Gross Vehicle Weight Rating | 7200 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | L29 HO |
| Engine Size | 6L |
| Engine Cylinders | 8 |
| Transmission | - |
| Transmission Type | Automatic |
| Transmission Speeds | - |
| Drivetrain | All-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $44,255 |
| Invoice Price | $38,723 |
| Delivery Charges | $815 |
Vehicle History Report
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Analysis
Analysis
What Problems Does the 2003 GMC Sierra Have?
Frequently reported problems for the 2003 GMC Sierra often revolve around the fuel system, specifically fuel pump failures. Transmission issues, especially slipping or hard shifting, are also common, particularly in vehicles with higher mileage or those that haven't received regular maintenance. Rust can be a significant issue, especially in areas where road salt is used; check the rocker panels, cab corners, and frame. Some owners have reported issues with the instrument cluster, specifically the gauges failing.
Recalls for the 2003 GMC Sierra have included issues related to the brake system and possible fuel leakage in some models, so checking the vehicle's VIN for outstanding recalls is crucial before purchase. Long-term reliability concerns often involve the durability of interior plastics, which can crack or fade over time. The "Chevy lean", caused by sagging rear leaf springs, is also a common issue affecting ride quality. Engine oil consumption can be a concern with the 5.3L V8 as it ages, so regular oil level checks are essential. Generally the earlier years of this generation, including 2003, can show more wear and tear compared to later model years within the same generation.
Recalls for the 2003 GMC Sierra have included issues related to the brake system and possible fuel leakage in some models, so checking the vehicle's VIN for outstanding recalls is crucial before purchase. Long-term reliability concerns often involve the durability of interior plastics, which can crack or fade over time. The "Chevy lean", caused by sagging rear leaf springs, is also a common issue affecting ride quality. Engine oil consumption can be a concern with the 5.3L V8 as it ages, so regular oil level checks are essential. Generally the earlier years of this generation, including 2003, can show more wear and tear compared to later model years within the same generation.
How long will the 2003 GMC Sierra last?
A well-maintained 2003 GMC Sierra can easily reach 200,000 miles or more. With regular oil changes, transmission services, and general upkeep, many owners report exceeding this milestone. However, long-term durability is often tied to preventative maintenance. Weaknesses that emerge over time include increased oil consumption in the 5.3L V8, rust issues (especially in colder climates), and potential for electrical gremlins. Neglecting maintenance will significantly shorten its lifespan. Good maintenance can see this truck last 15-20 years, or even longer if significant repairs are undertaken.
What Technology & Safety Features are Included?
The 2003 GMC Sierra's tech and entertainment were fairly basic by today's standards. Standard features included an AM/FM radio, and higher trims offered a CD player, and cassette player (older models). There were no built-in driver-assistance features like lane departure warning or blind-spot monitoring. Safety features included standard front airbags and antilock brakes (ABS).
Optional features included OnStar, which provided emergency assistance and vehicle diagnostics. Some models also offered a premium Bose sound system. Driver assistance was limited to features like cruise control, if equipped. Crash test ratings from the NHTSA (National Highway Traffic Safety Administration) generally awarded the 2003 GMC Sierra 4-5 stars for frontal crash protection for the driver and passenger, and 3-4 stars for side impact protection. It's important to note that these ratings are relative to vehicles of similar size and weight from that era. In terms of modern safety standards, it would likely perform poorly in comparison.
Technology was not a selling point of this vehicle. The focus was on reliability and utility rather than advanced infotainment or safety systems. The available features were functional for the time, but clearly lack the sophistication of contemporary vehicles.
Optional features included OnStar, which provided emergency assistance and vehicle diagnostics. Some models also offered a premium Bose sound system. Driver assistance was limited to features like cruise control, if equipped. Crash test ratings from the NHTSA (National Highway Traffic Safety Administration) generally awarded the 2003 GMC Sierra 4-5 stars for frontal crash protection for the driver and passenger, and 3-4 stars for side impact protection. It's important to note that these ratings are relative to vehicles of similar size and weight from that era. In terms of modern safety standards, it would likely perform poorly in comparison.
Technology was not a selling point of this vehicle. The focus was on reliability and utility rather than advanced infotainment or safety systems. The available features were functional for the time, but clearly lack the sophistication of contemporary vehicles.
What Colors Options are Available?
Exterior Colors
Summit White
Onyx Black
Silver Birch Metallic
Dark Gray Metallic
Pewter Metallic
Dark Blue Metallic
Arrival Blue Metallic
Red Fire Metallic
Dark Carmine Red Metallic
Interior Colors
Light Pewter
Graphite
Neutral
2003 GMC Sierra Prices and Market Value
When new, the 2003 GMC Sierra ranged from around $20,000 for a base model to $35,000+ for a fully loaded SLT trim. Currently, used market prices typically range from $3,000 to $12,000, depending on condition, mileage, and configuration. Depreciation has been significant, but these trucks hold some value due to their reputation for durability and utility. Factors affecting resale value include rust, mechanical condition, mileage, and trim level. 4x4 models tend to command a premium, as do those in excellent condition with documented maintenance records.
2003 GMC Sierra Cost of Ownership
Owning a 2003 GMC Sierra can be moderately expensive. Insurance costs are typically average for a full-size truck. Fuel economy is not great, especially with the V8 engines. Maintenance costs can be reasonable if you perform some work yourself, but repairs can be costly, particularly for transmission or engine issues. Long-term, rust repair and component replacement can add up. It's not the most economical vehicle to own, but its durability can offset some of the costs if properly maintained.
2003 GMC Sierra Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
26 gallons
City Mileage
11 miles/gallon
Highway Mileage
15 miles/gallon
2003 GMC Sierra Safety Rating
NHTSA
IIHS
2003 GMC Sierra Insurance
Insurance for a 2003 GMC Sierra is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2003 GMC Sierra Compare to Other Truck?
The 2003 GMC Sierra competes with trucks like the Ford F-150, Dodge Ram 1500, and Toyota Tundra. In terms of performance, the Sierra's V8 engines are comparable to those offered by Ford and Dodge, while the Tundra offers a slightly different driving experience. Feature-wise, the Sierra is fairly basic, especially in lower trims, and generally lags behind the F-150 in terms of available options.
Reliability is a mixed bag; the Sierra can be reliable with proper maintenance, but the aforementioned fuel pump and transmission issues are a concern. The Toyota Tundra generally enjoys a better reputation for long-term reliability. Price-wise, a used 2003 Sierra is often competitive with similar-year F-150s and Rams.
Alternatives to the 2003 GMC Sierra include a Toyota Tundra of the same year for potentially better reliability (though it may cost more), or a later model year (2005-2007) GMC Sierra or Chevrolet Silverado for incremental improvements and potentially fewer issues. A well-maintained Ford F-150 could also be considered, but research common problems for that model year as well. Ultimately, the best choice depends on individual needs and priorities, such as budget, desired features, and tolerance for potential repairs.
Reliability is a mixed bag; the Sierra can be reliable with proper maintenance, but the aforementioned fuel pump and transmission issues are a concern. The Toyota Tundra generally enjoys a better reputation for long-term reliability. Price-wise, a used 2003 Sierra is often competitive with similar-year F-150s and Rams.
Alternatives to the 2003 GMC Sierra include a Toyota Tundra of the same year for potentially better reliability (though it may cost more), or a later model year (2005-2007) GMC Sierra or Chevrolet Silverado for incremental improvements and potentially fewer issues. A well-maintained Ford F-150 could also be considered, but research common problems for that model year as well. Ultimately, the best choice depends on individual needs and priorities, such as budget, desired features, and tolerance for potential repairs.
Ranks #458 Truck
| 1 | 2023 Toyota Tundra | (5.0★) |
| 2 | 2022 Honda Ridgeline | (5.0★) |
| 3 | 2023 Ford E-Transit Chassis | (0.0★) |
| 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★) |
| 458 | 2003 GMC Sierra | (0.0★) |
Final Verdict: Is the 2003 GMC Sierra a Good Truck?
The 2003 GMC Sierra is a decent used truck for someone needing a capable and relatively affordable full-size pickup. It's ideal for those who prioritize utility and aren't overly concerned with modern tech features. It's worth buying *if* you find one in good condition with documented maintenance history and have it thoroughly inspected by a mechanic before purchase. Look for SLE or SLT trims for a better feature set. Be prepared for potential repairs, especially if the truck has high mileage. It's not recommended as a "new" purchase since it's a used vehicle. Avoid heavily rusted examples or those with obvious signs of neglect. If reliability is your top priority, consider a Toyota Tundra instead, but be prepared to pay a premium.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.