2018 Buick Enclave Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Buick Enclave 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 2018 Buick Enclave 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 2018 Buick Enclave 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 steps to diagnose the cruise control issue in a 2018 Buick Enclave?

When diagnosing a cruise control issue in a 2018 Buick Enclave, it's crucial to follow a methodical diagnostic approach that prioritizes simpler checks before moving on to more complex assessments. Begin by examining the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, inspect the cruise control buttons on the steering wheel to ensure they are functioning correctly and are not stuck, as this can hinder engagement. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying problems affecting the cruise control system. It's also important to verify the functionality of the speed sensors, which are essential for the system's performance. Additionally, the brake pedal switch must be tested, as it plays a critical role in the engagement and disengagement of cruise control. Finally, inspect the wiring and connections for any signs of damage or corrosion that could affect the system's functionality. If these initial steps do not resolve the issue, seeking assistance from a professional mechanic experienced with Buick Enclaves may be necessary for a comprehensive diagnosis and repair. By adhering to this structured approach, you can effectively troubleshoot and potentially resolve cruise control issues in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2018 Buick Enclave?

When the cruise control in your 2018 Buick Enclave ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied; if this switch malfunctions, it may prevent the system from engaging at all. Additionally, issues with the speed sensor can disrupt the vehicle's ability to maintain a constant speed, leading to cruise control failure. Another potential problem could be a blown fuse within the cruise control system, which would cut off power and render the system inoperable. If these components check out, consider the cruise control module itself; a defect here can hinder communication with other vehicle systems. Lastly, don’t overlook the possibility of electrical problems, such as damaged wiring or poor connections, which can also impede the cruise control's functionality. By systematically checking these areas, you can identify and address the root cause of your cruise control issues, making it possible to restore this convenient feature on your vehicle.

How urgent is it to address the malfunctioning cruise control in my 2018 Buick Enclave?

Addressing the malfunctioning cruise control in your 2018 Buick Enclave is of utmost importance due to the safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions for you and others on the road. Additionally, a faulty cruise control system can detract from your driving experience, especially during long trips, where comfort and ease of operation are paramount. Ignoring these symptoms not only compromises your safety but can also lead to further complications within your vehicle's systems, resulting in more extensive and costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of your cruise control system to ensure a safe and enjoyable driving experience.

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