The 1999 GMC W4500 is a versatile commercial truck, part of a broader line of Isuzu-built vehicles sold under the GMC badge in North America. Produced for many years, this model typically falls into the Class 4 truck category. Known for its robust construction and utilitarian design, it was favored for various vocational applications like delivery, towing, and specialized services. Pricing varied greatly based on configuration and options when new.
The Good
The 1999 GMC W4500 offers strong workhorse performance and renowned Japanese engineering reliability, providing peace of mind for business owners. Its practical design prioritizes functionality, while a surprisingly comfortable cabin for its class aids driver endurance. It represents solid value for those needing a dependable, no-nonsense work vehicle.
The Bad
Potential buyers should watch out for rust, especially on the frame and body panels, common in older vehicles. Electrical issues can sometimes arise, and the relatively basic interior amenities might feel dated. Drivetrain wear, particularly on high-mileage examples, is also a concern.
1999 GMC W4500: Quick Overview
- Engine Options: The 1999 GMC W4500 was typically equipped with robust diesel engines. The most common was the Isuzu 4HE1-TC, a 4.3-liter turbocharged inline-four diesel engine.
- Horsepower: This engine generally produced around 175 horsepower.
- Torque: Torque figures were substantial, often in the range of 300-350 lb-ft, essential for hauling and towing.
- Fuel Economy: Fuel economy for a vehicle of this size and purpose is not typically a primary selling point or a highly reported statistic. However, diesel engines of this era offered better mileage than comparable gasoline counterparts. Expect figures in the range of 10-15 MPG, heavily dependent on load and driving conditions.
- 0-60 Times: 0-60 mph times are largely irrelevant for a commercial truck designed for work, not speed. It would be a slow acceleration, likely exceeding 20 seconds, especially when loaded.
- Towing Capacity: The W4500 is a Class 4 truck, meaning its Gross Vehicle Weight Rating (GVWR) is between 14,001 and 16,000 pounds. Towing capacity is dependent on the specific chassis configuration, installed body, trailer type, and hitch. It is designed for significant towing and hauling, often exceeding 10,000 pounds for certain applications.
- Trim-Level Features: As a commercial vehicle, trim levels were less about luxury and more about vocational suitability. Standard features would include a functional interior with durable materials, power steering, power brakes, and basic gauges. Optional features might have included air conditioning, an upgraded sound system, and different seating configurations. The focus was on operational features like robust chassis options, various wheelbase lengths, and body upfitter capabilities.
1999 GMC W4500 Specifications
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Vehicle History Report
What Problems Does the 1999 GMC W4500 Have?
The 1999 GMC W4500, being a rebadged Isuzu, shares many of its common issues with the Isuzu NPR of the same era. One of the most frequently reported concerns revolves around the diesel injection system. Issues with the fuel pump, injectors, and glow plugs can arise, often necessitating expensive repairs. Turbocharger problems, such as leaks or failure, are also noted, which can significantly impact performance and fuel economy. Rust is a considerable long-term concern, particularly on the frame, cab corners, and wheel wells, especially in areas with harsh winters and road salt. This can compromise structural integrity. Electrical gremlins, including dashboard warning lights, faulty sensors, and intermittent power issues, have been reported, though these can be harder to diagnose and repair. Some owners have experienced problems with the transmission, especially automatics, with rough shifting or failure. The EGR (Exhaust Gas Recirculation) system can become clogged, leading to performance issues and warning lights. While specific recalls for the 1999 model year might be limited and vary by region, it's always advisable to check with GMC or NHTSA for any outstanding campaigns. Long-term reliability, while generally good due to the robust diesel powertrain, is heavily dependent on the quality of maintenance performed. Neglecting fluid changes, fuel filter replacements, and addressing minor issues promptly can exacerbate problems and lead to premature component failure.
How long will the 1999 GMC W4500 last?
With proper and diligent maintenance, a 1999 GMC W4500 diesel can realistically achieve 250,000 to 500,000 miles or more in service. These trucks are built for durability. However, this lifespan is heavily contingent on consistent oil changes, fuel filter replacements, and addressing any emerging issues promptly. Weaknesses that tend to manifest over time include increased susceptibility to rust, particularly on the chassis and body, and potential wear on suspension components and the transmission. The robust diesel engine itself is generally very durable, but components like the turbocharger and fuel injection system will require attention and eventual refurbishment or replacement after hundreds of thousands of miles.
What Technology & Safety Features are Included?
The 1999 GMC W4500, as a commercial vehicle of its era, prioritized functionality and robustness over advanced technology and entertainment. Built-in tech was quite basic, typically including a simple AM/FM radio, possibly with a cassette player as standard. An optional CD player might have been available for some models. There was no integrated navigation, Bluetooth, or smartphone connectivity. Driver-assistance features were virtually non-existent; expect no lane departure warning, adaptive cruise control, or blind-spot monitoring. The focus was on essential operational feedback. Safety features were rudimentary by today's standards. Standard equipment usually included seatbelts, power-assisted brakes (often disc in the front, drum in the rear), and power steering. Airbags were not standard on all models and might have been optional. Anti-lock braking systems (ABS) were often available as an option, particularly for the rear wheels, enhancing braking control under emergency situations. Given its commercial nature and the era of its production, comprehensive crash-test ratings from organizations like the NHTSA or IIHS are not readily available or comparable to modern passenger vehicles. These trucks are designed with a different set of safety considerations focused on payload and operator protection in a work environment rather than occupant safety in high-speed collisions typical of passenger car testing.
What Colors Options are Available?
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1999 GMC W4500 Prices and Market Value
When new, the 1999 GMC W4500's price varied significantly depending on its configuration, wheelbase, and vocational body installed, but it typically ranged from approximately $30,000 to $50,000+. These were substantial investments for businesses. Today, used 1999 GMC W4500 models can be found for anywhere from $5,000 to $20,000, heavily dependent on mileage, condition, maintenance history, and the specific body or chassis type. Depreciation has been significant, as is typical for commercial vehicles. However, well-maintained examples with lower mileage and desirable configurations (e.g., box trucks, service bodies) hold their value better. Factors affecting resale value include the presence of rust, mechanical condition, tire wear, and overall cosmetic appearance. Specialized vocational bodies can also add to or detract from value depending on demand.
1999 GMC W4500 Cost of Ownership
Owning a 1999 GMC W4500 can be economical for its intended purpose if well-maintained, but repairs can be costly. Insurance will likely be higher than for a passenger vehicle due to its commercial nature and GVWR. Fuel costs, while improved with the diesel engine compared to gasoline, are still significant given its size and intended use, though generally better than older gasoline counterparts. Maintenance is crucial and includes regular oil changes, fuel filter replacements, and chassis lubrication. Repair costs for diesel components, like injectors or turbochargers, can be substantial. Overall, it's a vehicle best suited for businesses where its utility outweighs its running and potential repair expenses.
1999 GMC W4500 Fuel Efficiency
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1999 GMC W4500 Insurance
Insurance for a 1999 GMC W4500 is moderately priced, reflecting its status as a Vehicle with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1999 GMC W4500 Compare to Other Vehicle?
The 1999 GMC W4500 competed in the Class 4 commercial truck segment against strong contenders like the Isuzu NPR (its direct sibling from the same manufacturing plant), the Ford F-650, and various offerings from Freightliner (e.g., the FL series) and Mitsubishi Fuso.
Performance: The W4500's 4.3L Isuzu diesel offered good torque for its displacement, comparable to other diesel offerings in its class. Its performance was geared towards hauling and towing rather than speed. Rivals like the F-650 often had more powerful engine options but at a higher cost.
Features: In 1999, features in this class were basic. The W4500, like the Isuzu NPR, offered a functional cabin with durability in mind. More premium rivals might have offered slightly more creature comforts or advanced options, but the core functionality was similar across the board.
Reliability: The Isuzu diesel engine powering the W4500 is known for its longevity, a significant advantage. While general truck components can wear out, the core powertrain is robust. Isuzu and its GMC-badged counterparts generally held a reputation for solid engineering and reliability, often matching or exceeding competitors.
Price: The W4500 was generally priced competitively within its segment. It offered a strong value proposition, especially when compared to potentially more expensive European or larger American offerings.
Alternatives:
Performance: The W4500's 4.3L Isuzu diesel offered good torque for its displacement, comparable to other diesel offerings in its class. Its performance was geared towards hauling and towing rather than speed. Rivals like the F-650 often had more powerful engine options but at a higher cost.
Features: In 1999, features in this class were basic. The W4500, like the Isuzu NPR, offered a functional cabin with durability in mind. More premium rivals might have offered slightly more creature comforts or advanced options, but the core functionality was similar across the board.
Reliability: The Isuzu diesel engine powering the W4500 is known for its longevity, a significant advantage. While general truck components can wear out, the core powertrain is robust. Isuzu and its GMC-badged counterparts generally held a reputation for solid engineering and reliability, often matching or exceeding competitors.
Price: The W4500 was generally priced competitively within its segment. It offered a strong value proposition, especially when compared to potentially more expensive European or larger American offerings.
Alternatives:
- Similar: Isuzu NPR - Essentially the same truck under the skin, often easier to find parts for directly from Isuzu dealerships.
- Similar: Mitsubishi Fuso FE Series - Another strong contender known for its robust diesel engines and reliability.
- Higher End/More Power: Ford F-650 - If more power and heavier-duty capabilities are needed, but typically at a higher price point and potentially lower fuel efficiency.
Final Verdict: Is the 1999 GMC W4500 a Good Vehicle?
The 1999 GMC W4500 is ideally suited for small to medium-sized businesses, tradespeople, and individuals requiring a dependable, medium-duty work truck for local delivery, towing, or specialized service applications. It is worth buying primarily in the used market, given its age. A well-maintained example with a verifiable service history and minimal rust is highly recommended. Buyers seeking a no-frills, workhorse vehicle that prioritizes durability and a robust diesel powertrain over modern amenities will find it a solid choice. It is less ideal for those prioritizing comfort, advanced technology, or fuel economy for long-haul highway use. Focus on models with intact vocational bodies that meet your specific needs.
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.