The 2003 Workhorse P42 is a versatile chassis often used as a base for various commercial vehicles like delivery vans, shuttle buses, and RVs. Produced from the late 1990s through the mid-2000s, it offered a robust platform. While specific trims and pricing varied widely based on the upfitter, its core appeal lay in its heavy-duty construction and adaptability for specialized vocational needs. Its popularity stemmed from its purpose-built nature for demanding applications.
The Good
The P42 offered robust performance for commercial tasks and a strong sense of reliability for business owners. Its sturdy design inspired confidence, while its functional interior prioritized driver utility, appealing to practical needs. The value proposition was in its durability and ability to be customized for specific jobs.
The Bad
Potential buyers should be aware of common issues such as rust on the frame and body, especially in areas exposed to salt. Electrical gremlins, particularly with wiring harnesses and accessory components, can also be a concern. Drivetrain components, while generally stout, may require attention if not properly maintained.
2003 Workhorse P42: Quick Overview
- Engine Options: The 2003 Workhorse P42 was primarily offered with a choice of gasoline and diesel engines, catering to different performance and efficiency needs. The most common gasoline engine was the General Motors Vortec 7.4L V8. For diesel enthusiasts, options included various International DT 466E inline-six engines.
- Horsepower: Horsepower varied significantly based on the engine choice. The GM 7.4L Vortec V8 typically produced around 290-315 horsepower. The International DT 466E diesel engines were known for their torque and generally offered a range from approximately 195 to 230 horsepower, with torque figures being more impressive for heavy-duty applications.
- Fuel Economy: Fuel economy for the Workhorse P42 was not a primary design consideration and varied greatly depending on the specific engine, transmission, body style, and load carried. Expect figures in the single digits for city driving, often in the 7-12 MPG range for gasoline engines, and potentially slightly better for diesel variants under optimal conditions. These vehicles were built for work, not for fuel efficiency.
- 0-60 Times: Official 0-60 mph times are rarely documented for commercial chassis like the P42, as this was not a relevant metric for its intended use. With their substantial curb weights and focus on torque, acceleration was generally leisurely, especially when loaded.
- Towing Capacity: Towing capacity was highly dependent on the specific chassis configuration, rear axle ratio, and any aftermarket modifications. However, the P42 chassis was designed to handle substantial loads, with many configurations capable of towing well over 10,000 lbs, making them suitable for hauling heavy equipment or trailers.
- Trim-Level Features: The P42 was a chassis, not a finished vehicle in the traditional sense. "Trims" were determined by the upfitter who built the final product. Therefore, features varied immensely. Standard chassis features typically included a basic driver's cabin with essential controls, power steering, and an alternator. Optional features and configurations were dictated by the end-user's needs, ranging from basic vinyl seats and AM/FM radios to more advanced driver aids or comfort features in luxury RV conversions.
2003 Workhorse P42 Specifications
Vehicle Information
| Year | 2003 |
| Make | Workhorse |
| Model | P42 |
| Trim | - |
| Style | - |
| Type | Bus |
| Category | P42 "P" Special Purpose Vehicle Chassis |
Manufacturing Details
| Made In | United States |
| Manufacturing City | UNION CITY |
Dimensions
| Doors | - |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 16000 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 5.7-L V-8 |
| Engine Size | 5.7L |
| Engine Cylinders | 8 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 2003 Workhorse P42 Have?
The 2003 Workhorse P42, like many vehicles of its era, has a history of reported issues that owners and mechanics have encountered. A significant concern for many owners is the potential for corrosion, particularly on the frame and body panels. This is especially prevalent in regions where road salt is used during winter months. This rust can compromise structural integrity if left unaddressed.
Electrical system issues are another frequently cited problem. This can manifest in various ways, including intermittent power to accessories, faulty dashboard lights, or problems with the wiring harnesses. The complexity of the wiring, especially in vehicles converted for specialized uses like RVs, can make troubleshooting difficult.
Some owners have reported issues with the transmission, particularly with automatic transmissions experiencing harsh shifting or premature wear. Regular fluid changes and proper maintenance are crucial to mitigate these concerns. The cooling system can also be a point of failure, with radiators and hoses potentially developing leaks over time.
Regarding recalls, specific to the 2003 model year, it's important to check the National Highway Traffic Safety Administration (NHTSA) database for any outstanding recalls. Workhorse chassis have historically faced recalls related to steering components, brake systems, and fuel system parts. For example, some Workhorse chassis from this period had recalls related to the brake light switch or potential issues with the steering column.
Long-term reliability is often a mixed bag. While the core powertrain (especially the diesel engines) can be very durable if well-maintained, the associated systems and the vehicle's extensive use in commercial applications can lead to wear and tear. The overall reliability heavily depends on the quality of maintenance it has received throughout its life and the specific upfitter who built the final product. Vehicles used in harsh commercial environments or those that have been neglected will likely present more challenges.
Electrical system issues are another frequently cited problem. This can manifest in various ways, including intermittent power to accessories, faulty dashboard lights, or problems with the wiring harnesses. The complexity of the wiring, especially in vehicles converted for specialized uses like RVs, can make troubleshooting difficult.
Some owners have reported issues with the transmission, particularly with automatic transmissions experiencing harsh shifting or premature wear. Regular fluid changes and proper maintenance are crucial to mitigate these concerns. The cooling system can also be a point of failure, with radiators and hoses potentially developing leaks over time.
Regarding recalls, specific to the 2003 model year, it's important to check the National Highway Traffic Safety Administration (NHTSA) database for any outstanding recalls. Workhorse chassis have historically faced recalls related to steering components, brake systems, and fuel system parts. For example, some Workhorse chassis from this period had recalls related to the brake light switch or potential issues with the steering column.
Long-term reliability is often a mixed bag. While the core powertrain (especially the diesel engines) can be very durable if well-maintained, the associated systems and the vehicle's extensive use in commercial applications can lead to wear and tear. The overall reliability heavily depends on the quality of maintenance it has received throughout its life and the specific upfitter who built the final product. Vehicles used in harsh commercial environments or those that have been neglected will likely present more challenges.
How long will the 2003 Workhorse P42 last?
The 2003 Workhorse P42, when properly maintained, is known for its potential to reach high mileage, often exceeding 200,000 to 300,000 miles, particularly with the diesel engine options. Many RV conversions and commercial vans built on this chassis continue to serve their owners for 15 to 20 years or more. The durability of the chassis itself is commendable, designed for heavy-duty use. However, weaknesses that emerge over time include increased susceptibility to rust, especially in coastal or road-salt prone areas. Suspension components and exhaust systems are also subject to wear and corrosion. Electrical gremlins can become more frequent with age. Ultimately, its longevity is directly tied to consistent maintenance, timely repairs, and the type of service it has performed.
What Technology & Safety Features are Included?
The 2003 Workhorse P42, in its chassis form, offered a very basic level of built-in technology, entertainment, and safety features, as its primary purpose was to serve as a foundation for other vehicles. Standard equipment in the driver's cabin typically included essential instrumentation like speedometer, tachometer, fuel gauge, and warning lights. Entertainment options were usually limited to a basic AM/FM radio, often with an auxiliary input for a CD player as an optional upgrade. More advanced infotainment systems were rare and depended entirely on the upfitter and the end-user's specifications.
Driver-assistance features were virtually non-existent by modern standards. Power steering was standard, and some models might have offered cruise control as an option. Anti-lock braking systems (ABS) were available on some configurations, primarily for safety during heavy braking. However, features like traction control, stability control, backup cameras, or advanced collision mitigation systems were not part of the original Workhorse design for this model year.
Safety features focused on the fundamentals of vehicle operation. Seatbelts were standard. Airbags for the driver and front passenger were generally included. The sturdy construction of the chassis provided a robust framework, contributing to occupant protection in the event of a collision. However, official crash-test ratings from organizations like the Insurance Institute for Highway Safety (IIHS) or the National Highway Traffic Safety Administration (NHTSA) are not typically available for bare chassis vehicles. Ratings would more accurately apply to the completed vehicle, such as a specific RV or delivery van model, built upon the P42 platform. These ratings would vary greatly depending on the final body construction and the specific safety equipment integrated by the upfitter.
Driver-assistance features were virtually non-existent by modern standards. Power steering was standard, and some models might have offered cruise control as an option. Anti-lock braking systems (ABS) were available on some configurations, primarily for safety during heavy braking. However, features like traction control, stability control, backup cameras, or advanced collision mitigation systems were not part of the original Workhorse design for this model year.
Safety features focused on the fundamentals of vehicle operation. Seatbelts were standard. Airbags for the driver and front passenger were generally included. The sturdy construction of the chassis provided a robust framework, contributing to occupant protection in the event of a collision. However, official crash-test ratings from organizations like the Insurance Institute for Highway Safety (IIHS) or the National Highway Traffic Safety Administration (NHTSA) are not typically available for bare chassis vehicles. Ratings would more accurately apply to the completed vehicle, such as a specific RV or delivery van model, built upon the P42 platform. These ratings would vary greatly depending on the final body construction and the specific safety equipment integrated by the upfitter.
What Colors Options are Available?
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2003 Workhorse P42 Prices and Market Value
Owning a 2003 Workhorse P42 can be a mixed bag regarding costs. Insurance premiums can vary significantly based on the vehicle's intended use (e.g., commercial van vs. RV), your driving record, and coverage levels. Fuel costs will likely be substantial, especially with gasoline engines, due to their lower fuel economy; diesel variants might offer better MPG but come with higher initial fuel prices. Maintenance and repair costs can be moderate to high, as parts are often specific to commercial vehicles and can be more expensive than those for standard passenger cars. Its long-term ownership cost is generally considered moderate to high due to its robust, heavy-duty nature and specialized components, making it less economical than a typical car but potentially offering good value for its intended purpose.
2003 Workhorse P42 Cost of Ownership
The 2003 Workhorse P42 occupied a unique niche, primarily serving as a chassis for specialized commercial applications, RVs, and buses, rather than being a direct competitor to typical passenger vans or trucks. However, within its functional sphere, it competed with chassis from manufacturers like Ford (E-Series chassis) and Chevrolet/GMC (Express/Savana chassis), as well as dedicated bus chassis manufacturers.
Performance: Compared to a Ford E-Series chassis of the same era, the P42 often offered more robust options, particularly with its International DT 466E diesel engine, providing superior torque for heavy hauling and towing compared to the gasoline V8s commonly found in Ford E-Series. However, for lighter-duty van conversions, the Ford and GM options might have offered more refined on-road manners and better fuel economy.
Features: Features on the P42 were heavily dictated by the upfitter. While the chassis itself was basic, RV conversions built on the P42 could be incredibly well-appointed, rivaling or exceeding the luxury found in RVs built on Ford or Chevy chassis. For basic cargo vans, the P42's cabin was functional but less refined than some competitors.
Reliability: The P42's reliability is often lauded for its heavy-duty components, especially the diesel engines, which could be very durable. However, specific issues like rust and electrical gremlins were points of concern, similar to many vehicles from this period. Ford and GM chassis of this era also had their own sets of common problems, with rust being a perennial issue for all manufacturers.
Price: As a chassis, the P42's initial price varied greatly. When new, it was competitive for its class, offering good value for the heavy-duty capability. In the used market, prices for a P42 chassis can be lower than comparable Ford or GM chassis, partly due to Workhorse's eventual exit from the market and a perception of complexity.
Alternatives: For a similar heavy-duty, purpose-built chassis, one might consider a Ford F-Series Cutaway chassis (if available for the specific application) or dedicated bus chassis from manufacturers like Freightliner (though often for larger vehicles). For lighter cargo or passenger van duty, Ford E-Series and Chevrolet Express/GMC Savana remain viable alternatives, potentially offering better fuel efficiency and a more comfortable ride, albeit with less heavy-duty capability than a P42 equipped with a diesel engine.
Performance: Compared to a Ford E-Series chassis of the same era, the P42 often offered more robust options, particularly with its International DT 466E diesel engine, providing superior torque for heavy hauling and towing compared to the gasoline V8s commonly found in Ford E-Series. However, for lighter-duty van conversions, the Ford and GM options might have offered more refined on-road manners and better fuel economy.
Features: Features on the P42 were heavily dictated by the upfitter. While the chassis itself was basic, RV conversions built on the P42 could be incredibly well-appointed, rivaling or exceeding the luxury found in RVs built on Ford or Chevy chassis. For basic cargo vans, the P42's cabin was functional but less refined than some competitors.
Reliability: The P42's reliability is often lauded for its heavy-duty components, especially the diesel engines, which could be very durable. However, specific issues like rust and electrical gremlins were points of concern, similar to many vehicles from this period. Ford and GM chassis of this era also had their own sets of common problems, with rust being a perennial issue for all manufacturers.
Price: As a chassis, the P42's initial price varied greatly. When new, it was competitive for its class, offering good value for the heavy-duty capability. In the used market, prices for a P42 chassis can be lower than comparable Ford or GM chassis, partly due to Workhorse's eventual exit from the market and a perception of complexity.
Alternatives: For a similar heavy-duty, purpose-built chassis, one might consider a Ford F-Series Cutaway chassis (if available for the specific application) or dedicated bus chassis from manufacturers like Freightliner (though often for larger vehicles). For lighter cargo or passenger van duty, Ford E-Series and Chevrolet Express/GMC Savana remain viable alternatives, potentially offering better fuel efficiency and a more comfortable ride, albeit with less heavy-duty capability than a P42 equipped with a diesel engine.
2003 Workhorse P42 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
2003 Workhorse P42 Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
2003 Workhorse P42 Insurance
Insurance for a 2003 Workhorse P42 is moderately priced, reflecting its status as a Bus with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2003 Workhorse P42 Compare to Other Bus?
The 2003 Workhorse P42 is ideal for individuals or businesses needing a robust, customizable platform for specialized applications such as RV conversions, delivery vans, shuttle buses, or service vehicles. It's worth buying if you prioritize raw capability and a strong chassis, especially if opting for a well-maintained diesel variant. Buying used is the only option. It's crucial to inspect thoroughly for rust and electrical issues. Specific upfitter bodies (like well-built RVs) can significantly enhance its value. It's not for those seeking modern tech, exceptional fuel economy, or low maintenance costs. A buyer must be prepared for potential repairs and a more utilitarian driving experience.
Final Verdict: Is the 2003 Workhorse P42 a Good Bus?
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Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma