2021 Chevrolet Tahoe Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2021 Chevrolet Tahoe

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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 2021 Chevrolet Tahoe 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 2021 Chevrolet Tahoe 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 2021 Chevrolet Tahoe?

When troubleshooting the non-functioning cruise control in a 2021 Chevrolet Tahoe, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can prevent the system from operating. Next, ensure that the cruise control settings are correctly configured according to the owner's manual, as incorrect settings can lead to confusion about whether the system is engaged. After confirming the settings, inspect the speed sensors, as they play a crucial role in the cruise control's functionality; faulty sensors can hinder engagement. Additionally, examine the brake pedal switch, since a malfunction here can disable the cruise control when the brakes are applied, ensuring safety. Finally, if the issue persists, consider using a diagnostic scanner to check for any error codes that may indicate specific problems within the cruise control system. By following these steps, you can effectively diagnose and potentially resolve the issue with your Tahoe's cruise control.

What are the common problems that could cause the cruise control to stop working in a 2021 Chevrolet Tahoe?

When troubleshooting cruise control issues in a 2021 Chevrolet Tahoe, it's essential to understand the common problems that may lead to its malfunction. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, a malfunctioning speed sensor can disrupt the system's ability to maintain a consistent speed, resulting in failure. It's also wise to check for a blown fuse in the vehicle's electrical system, as this can halt cruise control functionality altogether. Problems with the throttle control system, including a faulty throttle position sensor or actuator, can further complicate matters. In some cases, the cruise control module itself may be defective, necessitating replacement to restore proper operation. Lastly, inspect the wiring connected to the cruise control system for any damage or corrosion, as these issues can disrupt signal flow and lead to malfunction. By systematically addressing these potential problems, you can effectively troubleshoot and resolve cruise control issues in your Tahoe.

How urgent is it to address the malfunctioning cruise control in a 2021 Chevrolet Tahoe?

Addressing a malfunctioning cruise control in a 2021 Chevrolet Tahoe is of utmost importance due to the potential safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can be dangerous while driving. Moreover, issues with the cruise control may signal deeper electronic system problems that could affect other critical vehicle functions, making it essential to investigate the root cause promptly. Neglecting these symptoms not only compromises safety but can also lead to decreased fuel efficiency and increased wear on the vehicle, resulting in costly repairs down the line. Therefore, it is crucial for Tahoe owners to prioritize the diagnosis and repair of cruise control issues to ensure their vehicle operates safely and efficiently.

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