2002-2003 Workhorse FasTrack FT1802 Vehicle Speed Sensor Guide
Fix erratic speedometer readings and harsh shifting on your FasTrack FT1802 by understanding and replacing your vehicle speed sensor.
- A faulty VSS is the likely cause of an erratic speedometer and harsh shifting in your FT1802.
- Symptoms include a non-working speedometer, poor automatic shifting, and cruise control failure.
- For this commercial vehicle, a quality aftermarket brand like Standard Ignition is a reliable and cost-effective choice.
- This is a relatively simple and inexpensive DIY repair for owners with basic tools.
Is Your Speedometer Acting Up? Signs of a Failing VSS
A bad vehicle speed sensor on a Workhorse FasTrack chassis can cause noticeable problems. Because the VSS provides data to multiple systems, its failure can show up in several ways. You might notice one or more of these issues at the same time.
- Erratic Speedometer: The most common sign is a speedometer that jumps around, reads incorrectly, or stops working altogether.
- Harsh Shifting: Your truck's 4L80-E automatic transmission relies on speed data to shift smoothly. A bad sensor can cause delayed, hard, or erratic shifts. In some cases, the transmission may get stuck in one gear, a condition known as "limp mode."
- Cruise Control Failure: If the cruise control system doesn't know how fast the vehicle is going, it will not engage or will shut off unexpectedly.
- Check Engine Light: A failing VSS can trigger the Check Engine Light on your dashboard. A code scanner might show a fault code like P0500, which points to a VSS malfunction.
Related Workhorse Chassis Issues
While no recalls exist for the vehicle speed sensor itself, NHTSA issued recalls for 2001-2003 Workhorse W-series chassis due to sticking brake calipers. This issue could cause extreme heat, which in turn could damage the ABS wheel speed sensor. While your FasTrack is a P-series chassis, it's important to be aware of potential sensor issues related to brake heat on Workhorse platforms.
Choosing the Right Aftermarket Sensor
For a commercial vehicle like the FasTrack FT1802, finding original equipment (OEM) parts can be difficult and expensive. The aftermarket is often the most practical source for replacement sensors. The key is to choose a brand with a reputation for quality.
Standard Ignition (Standard Motor Products): This is a well-established aftermarket brand that has been making engine management parts for over a century. They manufacture a wide variety of sensors and electronic components and are a common choice for professional repair shops. For a straightforward electronic part like a VSS, a reputable aftermarket brand like Standard Ignition provides a reliable and cost-effective solution.
Pro Tip: The FasTrack FT1802 is part of a larger family of step vans built on the Workhorse P42 chassis. Many engine and transmission parts, including the VSS, are shared with other FasTrack models like the FT1061, FT1261, and FT1601 from the same era.
Estimated Replacement Costs
The cost to replace the VSS is reasonable, especially if you do the work yourself. The part itself is not expensive, and labor time is minimal.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket VSS | $30 - $50 |
| Shop Labor | $75 - $150 |
| Total Estimated Cost | $105 - $200 |
Cost estimates are for reference only and may vary based on your location and repair shop rates.
Frequently Asked Questions (FAQ)
Where is the vehicle speed sensor located on the FT1802?
The vehicle speed sensor is typically found on the tail-shaft housing of the automatic transmission. On the 4L80-E transmission used in your truck, this is on the rear section of the transmission, where the driveshaft connects.
Can I replace the VSS myself?
Yes, this is a DIY-friendly repair for most people with basic hand tools. The sensor is usually held in by a single bolt and has an electrical connector. After safely raising and supporting the vehicle, you can access it from underneath. The estimated difficulty is low.
What happens if I don't replace a bad VSS?
You can continue to drive the vehicle, but you will have to deal with an incorrect speedometer, poor shifting, and no cruise control. Prolonged harsh shifting can cause extra wear on your transmission. A non-functioning speedometer is also a safety risk, as you may not be able to judge your speed accurately.
Is an aftermarket sensor as good as an OEM one for this truck?
For a vehicle of this age and type, a quality aftermarket sensor from a known brand like Standard Ignition is a perfectly acceptable and reliable choice. OEM parts may be difficult to find, and the technology of a VSS is well-understood by top aftermarket manufacturers.
Technical Specifications
Typically a 2-terminal sensor located on the output shaft of the GM 4L80-E automatic transmission.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Workhorse FasTrack FT1802: