1999 Chevrolet K3500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1999 Chevrolet K3500 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 1999 Chevrolet K3500 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 1999 Chevrolet K3500 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 steps to diagnose the non-functioning cruise control in a 1999 Chevrolet K3500?

When diagnosing the non-functioning cruise control in a 1999 Chevrolet K3500, it's essential to adopt a methodical approach that starts with the most straightforward solutions. Begin by checking the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, inspect the wiring for any signs of damage or loose connections, as these can disrupt the electrical flow necessary for the system to operate. After ensuring the wiring is intact, test the cruise control switch itself; a malfunctioning switch can often be the culprit behind cruise control failures. Additionally, since this model may utilize vacuum lines, examine them for any leaks or damage that could hinder performance. Finally, if the problem persists, using a diagnostic scanner to check for error codes can provide valuable insights into more complex issues that may require further investigation. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control problems in your Chevrolet K3500.

What are the common problems that could cause the cruise control to stop working in a 1999 Chevrolet K3500?

When troubleshooting the cruise control system in a 1999 Chevrolet K3500, it's essential to consider several common problems that could be at play. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system, so inspecting and replacing any damaged fuses is a straightforward first step. Next, the brake pedal switch should be examined, as a malfunctioning switch may prevent the cruise control from engaging or disengaging properly. Additionally, the cruise control module itself could be faulty, which would directly affect the system's functionality. It's also important to inspect for vacuum leaks, as these can significantly hinder the operation of the cruise control. The speed sensor is another critical component; if it fails, the system won't be able to maintain a constant speed. Lastly, don't overlook potential electrical issues, such as wiring problems or a defective cruise control switch, which can also lead to operational failures. By systematically addressing these areas, you can effectively diagnose and potentially resolve the cruise control issues in your vehicle.

How urgent is it to repair the non-functioning cruise control on a 1999 Chevrolet K3500?

Repairing the non-functioning cruise control on your 1999 Chevrolet K3500 should be treated as a priority due to the significant impact it has on both comfort and safety while driving. A malfunctioning cruise control system can lead to increased driver fatigue, especially during long trips where maintaining a constant speed is essential. This not only detracts from the overall driving experience but can also create distractions as you may find yourself constantly adjusting your speed manually. Moreover, the underlying causes of cruise control failure, such as faulty brake or clutch switches, could indicate more serious issues within your vehicle that require immediate attention. Ignoring these symptoms could lead to further complications, potentially resulting in costly repairs down the line. Therefore, addressing the cruise control problem promptly is crucial for ensuring a safe and enjoyable driving experience.

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