2012 Buick LaCrosse Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2012 Buick LaCrosse

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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 2012 Buick LaCrosse 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 2012 Buick LaCrosse 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.

What are the initial diagnostic steps to troubleshoot the non-functional cruise control in a 2012 Buick LaCrosse?

When troubleshooting the non-functional cruise control in a 2012 Buick LaCrosse, it's important to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown or damaged fuse can easily disrupt the system's operation. Next, verify that the cruise control settings are correctly configured; ensure the system is activated and set to the desired speed, as incorrect settings can lead to functionality issues. Inspect the cruise control buttons on the steering wheel for any signs of physical damage or wear, as faulty buttons may prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide insights into any underlying problems affecting the cruise control. Additionally, examine the vacuum lines for leaks, as these can impact the system's performance. Finally, test the brake and clutch switches to confirm they are functioning properly, since these components are designed to disengage the cruise control when activated. By following these steps, you can effectively diagnose and address the issues with your cruise control system, potentially saving time and money on repairs.

What are the common problems that could cause the cruise control to stop working in a 2012 Buick LaCrosse?

When the cruise control in a 2012 Buick LaCrosse ceases to function, several common problems may be at play. 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 can prevent the system from engaging. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain a steady speed, leading to erratic performance. A blown fuse is another straightforward issue that can halt the cruise control system entirely, making it essential to check the vehicle's fuse box. Furthermore, a malfunctioning cruise control module may fail to communicate effectively with the car's systems, resulting in a non-responsive cruise control feature. Lastly, vacuum leaks in the engine can compromise the system's ability to maintain speed, as the cruise control relies on a stable vacuum to function correctly. By understanding these common problems, DIYers can effectively diagnose and potentially resolve the issues affecting their vehicle's cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2012 Buick LaCrosse?

When it comes to the malfunctioning cruise control in a 2012 Buick LaCrosse, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unexpected acceleration or deceleration, creating a significant safety hazard for both the driver and other road users. Ignoring these symptoms not only increases the risk of accidents but can also result in more extensive damage to the vehicle's components, leading to costly repairs down the line. Therefore, it is crucial to have the cruise control system inspected and repaired as soon as possible by a qualified mechanic or dealership. Taking prompt action not only ensures the vehicle's optimal performance but also contributes to a safer driving experience, making it imperative for any owner experiencing issues with their cruise control to prioritize this repair.

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