Chevrolet Suburban Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Chevrolet Suburban 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Chevrolet Suburban 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 Chevrolet Suburban 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

Troubleshooting Cruise Control Issues in a Chevrolet Suburban

When troubleshooting cruise control issues in your Chevrolet Suburban, begin by checking the most accessible components. Start with the cruise control switches located on the steering wheel, as these are often the culprits behind malfunctioning systems. Ensure that these switches are clean and functioning properly, as any dirt or wear can impede their operation. Next, verify that the brake system is working correctly, since engaging the brake will automatically disengage the cruise control. If these initial checks do not resolve the issue, proceed to inspect the control module and its connections. Look for any signs of damage or loose wires in the 10-pin plug, as these can disrupt communication within the system. Understanding the operating principles of your cruise control will also aid in diagnosing the problem; remember that the system is designed to maintain speed until interrupted by the brake or clutch. By following this systematic approach, you can effectively identify and resolve the issues affecting your cruise control system, ensuring a smoother driving experience.

What Could Cause the Cruise Control to Malfunction in a Chevrolet Suburban?

When dealing with cruise control malfunctions in a Chevrolet Suburban, it's essential to understand the various issues that could be at play. One of the most frequent culprits is a failed control module, sensor, or switch, which can disrupt the system's functionality. Additionally, throttle actuation problems, particularly those stemming from a defective throttle position sensor, can cause the engine's computer to mismanage fuel delivery, potentially leading to black exhaust emissions. It's also crucial to check for a blown fuse or a malfunctioning brake pedal switch, as these components are integral to the cruise control system's operation. In older models, a broken vacuum line may be the source of the problem, while issues with the throttle control system or the ABS can further complicate matters. To effectively troubleshoot, start by inspecting these components systematically, ensuring that fuses are intact and that the brake pedal sensor is functioning correctly. This methodical approach will help you identify and resolve the underlying issues, restoring your cruise control to proper working order.

Why is the Cruise Control Not Working in a Chevrolet Suburban?

When the cruise control in your Chevrolet Suburban fails, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and further vehicle damage. Common causes of cruise control malfunction include failed control modules, faulty sensors, or problematic switches, which can disrupt the system's functionality. Additionally, throttle actuation problems may prevent the cruise control from engaging properly. A defective brake pedal switch or a blown fuse can also be significant contributors to the issue, as they directly affect the system's ability to maintain speed. Furthermore, complications within the throttle control system or the ABS can exacerbate the problem, making it essential to diagnose these areas. In older models, a broken vacuum line might be the culprit, highlighting the importance of a thorough inspection. By understanding these potential failures, you can take immediate action to restore your cruise control system, ensuring a safer driving experience and preventing more extensive repairs down the line.

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