2010 Buick Lucerne Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2010 Buick Lucerne and How to Fix Them

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Reviewed by
Bo Fader
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 2010 Buick Lucerne 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 2010 Buick Lucerne 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.

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 2010 Buick Lucerne?

To effectively diagnose the cruise control issue in your 2010 Buick Lucerne, start by checking if the Check Engine Light is illuminated, as this could indicate a broader problem affecting the cruise control system. If the light is on, using an OBD2 scan tool is the next logical step; this device will help you identify specific error codes that can point to the root cause of the malfunction. Once you have the codes, focus on the control module, sensor, and switch, as these components are commonly associated with cruise control failures. Additionally, be aware of potential throttle actuation problems, which can also disrupt the cruise control functionality. If you're still uncertain, consulting resources like RepairPal can provide insights into common issues and repair costs, helping you make informed decisions about any necessary repairs. By following this structured diagnostic approach, you can efficiently pinpoint the issue and take steps toward resolving it.

What are the common problems that could cause the cruise control to stop working in a 2010 Buick Lucerne?

When the cruise control in your 2010 Buick Lucerne ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a failed control module, which is essential for the cruise control system's operation. Additionally, sensor or switch malfunctions can disrupt the system's functionality, leading to a lack of response when attempting to engage cruise control. Another area to check is the throttle actuation; if there are problems here, it can prevent the system from maintaining speed. Blown fuses are also a common issue, as they can interrupt the power supply necessary for the cruise control to work. Furthermore, a faulty brake pedal position sensor can mistakenly signal that the brakes are engaged, disabling the cruise control. Lastly, issues with the throttle body or the PRNDL/shifter position switch can also contribute to the malfunction. If you encounter these problems, a thorough inspection of these components can help you identify the root cause and determine whether a DIY fix is feasible or if professional assistance is needed.

How urgent is it to address the malfunctioning cruise control in a 2010 Buick Lucerne?

Addressing the malfunctioning cruise control in a 2010 Buick Lucerne is crucial for both safety and driving comfort. While it may not seem like an immediate emergency, neglecting this issue can lead to significant inconveniences during long drives, where maintaining a constant speed is essential. A malfunctioning system can result in erratic speed control, increasing the risk of sudden acceleration or deceleration, particularly on highways where steady speed is vital for safe driving. Furthermore, ignoring the problem may lead to driver fatigue, as the driver is forced to manually control the speed without the assistance of cruise control. A good starting point for troubleshooting is to check for blown fuses, a common cause of cruise control failures. If a blown fuse is identified, replacing it is a straightforward fix that can restore functionality. Therefore, while it may not be an urgent crisis, addressing the malfunction promptly is advisable to ensure a safer and more comfortable driving experience.

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