2002 GMC Envoy Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2002 GMC Envoy and How to Fix Them

Find Repair Location
Reviewed by
Aisha
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 2002 GMC Envoy 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 2002 GMC Envoy 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 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.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2002 GMC Envoy?

When troubleshooting the non-functional cruise control in a 2002 GMC Envoy, it's important to adopt a systematic diagnostic approach. Start by checking the cruise control fuse, as a blown fuse can be a simple yet common culprit for the system's failure. Next, verify the functionality of the cruise control switch; a malfunctioning switch may prevent the system from engaging. It's also crucial to inspect the brake pedal switch, which is responsible for disengaging the cruise control when the brakes are applied; ensure it is not stuck in the off position. Additionally, examine the vehicle speed sensor, as it provides essential input for maintaining the set speed; confirm that it is operational and sending accurate signals. Finally, consider using a diagnostic scanner to check for any error codes related to the cruise control system, as these codes can offer valuable insights into the underlying issues. By following these steps, you can effectively diagnose and address the common problems that may be affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2002 GMC Envoy?

When troubleshooting the cruise control system in a 2002 GMC Envoy, it's essential to understand the common problems that may lead to its failure. One frequent issue is a malfunctioning control module, which can disrupt the communication between various components. Additionally, sensor or switch failures can prevent the system from engaging properly. Throttle actuation problems are another potential culprit, as they can hinder the vehicle's ability to maintain speed. It's also important to check for a blown fuse or a defective brake pedal switch, as these can interrupt the cruise control's operation. Furthermore, GM ignition switch failures and issues with the powertrain control module (PCM) can significantly impact the system's functionality. By identifying these common problems, DIY enthusiasts can effectively diagnose and address the issues affecting their cruise control system, ensuring a smoother driving experience.

How urgent is it to repair the non-functioning cruise control in a 2002 GMC Envoy?

When it comes to the urgency of repairing the non-functioning cruise control in a 2002 GMC Envoy, several critical factors underscore the need for prompt attention. First and foremost, safety is paramount; a malfunctioning cruise control system can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which poses significant risks on the road. This unpredictability can compromise not only the driver’s safety but also that of passengers and other road users. Additionally, the comfort and convenience that cruise control offers during long drives cannot be overlooked. By allowing drivers to maintain a steady speed without constant manual adjustments, a functioning cruise control system reduces fatigue and enhances the overall driving experience. Furthermore, from a financial perspective, addressing this issue promptly can help preserve the vehicle's resale value. Prospective buyers often view a malfunctioning cruise control as a sign of neglect, which can diminish the car's appeal and market worth. Therefore, while individual circumstances may vary, the urgency of repairing the cruise control in a 2002 GMC Envoy is clear, as it directly impacts safety, comfort, and the vehicle's long-term value.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.