2020 Chevrolet Sonic Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Chevrolet Sonic and How to Fix Them

Find Repair Location
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 2020 Chevrolet Sonic 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 2020 Chevrolet Sonic 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2020 Chevrolet Sonic?

When faced with a non-functioning cruise control in your 2020 Chevrolet Sonic, start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue. Next, verify the functionality of the cruise control switch; it should engage and disengage smoothly. If these initial checks do not resolve the problem, examine the speed sensors, as they play a crucial role in the system's operation. Additionally, inspect the wiring connections for any signs of damage or looseness, which can disrupt the electrical flow. Utilizing a diagnostic scanner can also be beneficial, as it will reveal any error codes that may indicate specific faults within the cruise control system. Lastly, ensure that the brake pedal switch is functioning correctly, since a malfunction here can disable the cruise control when the brake is applied. By systematically following these steps, you can effectively diagnose and potentially resolve the issues with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2020 Chevrolet Sonic?

When the cruise control in your 2020 Chevrolet Sonic stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty speed sensor, which is crucial for the cruise control system to accurately gauge your vehicle's speed. If this sensor is malfunctioning, the system may fail to engage or maintain the desired speed. Another potential issue could be a blown fuse; if the electrical circuit that powers the cruise control is disrupted, the system will not operate. Additionally, the brake light switch plays a vital role in the cruise control functionality, as it disengages the system when the brakes are applied. If this switch is faulty, it can prevent the cruise control from working properly. Problems with the throttle actuator control system, such as a defective actuator or sensor, can also hinder the cruise control's ability to maintain speed. Lastly, a malfunctioning cruise control module, which processes speed and command inputs, can lead to system failure. By identifying these common issues, you can take the first steps toward troubleshooting and potentially restoring your cruise control functionality.

How urgent is it to address the malfunctioning cruise control in my 2020 Chevrolet Sonic?

When it comes to a malfunctioning cruise control system in your 2020 Chevrolet Sonic, the urgency of addressing the issue cannot be overstated. A faulty cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk to you and other road users. Moreover, neglecting this problem can diminish your driving comfort, particularly during long trips where cruise control is often utilized for ease. Beyond immediate safety and comfort concerns, delaying repairs can exacerbate the issue, leading to further wear and tear on your vehicle's components. This not only increases the likelihood of more extensive and costly repairs down the line but can also compromise the overall performance of your Sonic. Therefore, it is crucial to prioritize the diagnosis and repair of any cruise control malfunctions to ensure a safe and enjoyable driving experience.

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.