1998 Chevrolet Express 3500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1998 Chevrolet Express 3500 and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 1998 Chevrolet Express 3500 cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 1998 Chevrolet Express 3500 cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 1998 Chevrolet Express 3500?

When troubleshooting the non-functional cruise control in a 1998 Chevrolet Express 3500, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuse associated with the cruise control system, as a blown fuse is a straightforward issue that can easily be resolved. Next, inspect the wiring for any visible damage or loose connections, since faulty wiring can disrupt the system's operation. After ensuring the wiring is intact, test the cruise control switch to confirm it is functioning properly, as a malfunctioning switch is a common culprit. Additionally, examine the vacuum lines, which are crucial in older models; any leaks or damage here can significantly impact performance. If these initial checks do not reveal the problem, utilize a diagnostic scanner to identify any error codes that may provide insight into the issue. Finally, inspect the cruise control module for signs of damage or corrosion, as this component can also fail and affect the system's functionality. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 1998 Chevrolet Express 3500?

When troubleshooting the cruise control system in a 1998 Chevrolet Express 3500, it's essential to consider several common problems that could be affecting its functionality. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system. Additionally, the brake pedal switch plays a crucial role, as it is designed to deactivate the cruise control when the brake is pressed. If this switch is faulty, it may prevent the cruise control from engaging at all. Another potential issue could be a defective cruise control module, which is responsible for the system's overall operation. Vacuum leaks are also a common culprit, as they can interfere with the system's ability to maintain speed. Furthermore, a malfunctioning speed sensor can hinder the cruise control's performance, making it unable to hold a set speed. Lastly, inspect the wiring for any damage or corrosion, as these issues can disrupt communication between the various components of the cruise control system. By systematically checking these areas, you can effectively diagnose and address the problem, restoring your vehicle's cruise control functionality.

How urgent is it to address the non-functioning cruise control in a 1998 Chevrolet Express 3500?

When it comes to the non-functioning cruise control in a 1998 Chevrolet Express 3500, understanding the urgency of the situation is crucial for any DIY enthusiast. While the immediate safety risks may not be apparent, neglecting this issue can lead to a less enjoyable driving experience and potential complications down the line. A malfunctioning cruise control system means that the driver must constantly monitor and adjust their speed, which can be particularly cumbersome during long trips or highway driving. Moreover, if left unaddressed, the underlying causes of the malfunction could worsen, potentially leading to more significant and costly repairs. Therefore, while it may not seem like an emergency, it is advisable to inspect and repair the cruise control system promptly. This proactive approach not only enhances driving comfort but also helps maintain the vehicle's overall functionality and safety.

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1998 Chevrolet Express 3500 Cruise Control Issues & Repairs