2018 Buick Envision Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Buick Envision and How to Fix Them

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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 2018 Buick Envision 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.

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RepairPal Certified shops can diagnose and repair your 2018 Buick Envision electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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Tuffy Tire & Auto Service Center - Grandview

4.7
(85)
2.39 mi
1524 W 5th Ave
Columbus, OH
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Closes 5:00 PM
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Excite Auto Repair & Towing

4.4
(15)
5.94 mi
3430 Westerville Road
Columbus, OH
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Closes 6:00 PM
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All In Auto Service

4.9
(25)
6.56 mi
5200 Fisher Road
Columbus, OH
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Closes 6:00 PM
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Tuffy Tire & Auto Service - Grove City

4.4
(520)
6.67 mi
2131 Stringtown Rd
Grove City, OH
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Closes 6:00 PM
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How much does it cost to fix a 2018 Buick Envision 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 2018 Buick Envision?

When troubleshooting the non-functioning cruise control in a 2018 Buick Envision, it's essential to start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse in the fuse box; a blown fuse can easily disrupt the system's functionality. Next, ensure that the cruise control settings are correctly configured and activated, as incorrect settings can prevent the system from engaging. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that may indicate a deeper problem within the cruise control system. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as stuck or broken buttons can hinder operation. Finally, verify that the brake pedal switch is functioning correctly, as this switch is crucial for disengaging the cruise control when the brake is applied. By following these steps, you can systematically identify and address the potential causes of a non-functioning cruise control system in your vehicle.

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

When the cruise control in your 2018 Buick Envision ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is faulty speed sensors, which are essential for the cruise control system to accurately gauge your vehicle's speed. If these sensors are malfunctioning, the system may not engage or maintain speed as intended. Another common issue is a malfunctioning brake light switch; if this switch fails, it can cause the cruise control to disengage unexpectedly whenever the brake pedal is pressed, disrupting your driving experience. Additionally, a blown fuse in the cruise control circuit can prevent the system from operating altogether, making it a straightforward fix if you check your vehicle's fuse box. Problems with the throttle actuator control system can also arise, affecting the cruise control's ability to maintain a steady speed. Lastly, issues with the electronic control module (ECM), which oversees various vehicle functions including cruise control, can lead to system failures. If you encounter any of these problems, consider inspecting these components before seeking professional help, as many of these issues can be addressed with basic automotive knowledge and tools.

How urgent is it to address the malfunctioning cruise control in a 2018 Buick Envision?

When it comes to a malfunctioning cruise control in a 2018 Buick Envision, the urgency to address the issue cannot be overstated. A faulty cruise control system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. This unpredictability not only endangers the driver and passengers but also poses risks to other road users. Additionally, neglecting this problem can result in increased fuel consumption, which can add unnecessary costs over time, and may even lead to further damage to the vehicle's components. For those considering a DIY approach, it is crucial to recognize that while some issues may seem minor, they can escalate quickly if not addressed. Therefore, taking prompt action to diagnose and repair the cruise control system is essential for maintaining the vehicle's performance and ensuring a safe driving experience. If the problem persists or if you're unsure about the repair process, seeking professional assistance is highly recommended to avoid any complications.

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