Cadillac XT6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Cadillac XT6 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
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25% chance it's the
Control Module
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25% chance it's the
Throttle
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20% chance it's
Something else
The most common reasons a Cadillac XT6 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 Cadillac XT6 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.

Troubleshooting Cruise Control Issues in a Cadillac XT6

When troubleshooting cruise control issues in your Cadillac XT6, it's essential to adopt a systematic diagnostic approach. Start by inspecting the cruise control button for any visible debris or damage that could hinder its functionality. If the button appears intact, check the control module and associated sensors, as these components are often the root cause of malfunctions. Next, assess the throttle actuation system, ensuring that it operates smoothly without any obstructions. If your vehicle is equipped with adaptive cruise control, verify that the system is correctly detecting vehicles ahead; a failure to do so may indicate a deeper technological issue. Lastly, if you find yourself switching between adaptive and regular cruise control, ensure you are following the correct procedure, such as pressing and holding the Cancel button. By methodically addressing these areas, you can effectively diagnose and resolve cruise control problems, restoring functionality to your Cadillac XT6.

What Could Cause the Cruise Control to Malfunction in a Cadillac XT6?

When dealing with cruise control malfunctions in a Cadillac XT6, it's essential to understand the common problems that may arise. One frequent culprit is a failed control module, sensor, or switch, which can disrupt the system's functionality. Additionally, throttle actuation issues can prevent the cruise control from engaging properly, leading to frustration during drives. It's also important to check for a blown fuse or a defective brake pedal switch, as these components play a critical role in the cruise control system's operation. Furthermore, problems within the throttle control system or the ABS can contribute to the malfunction. Lastly, don't overlook the possibility of a broken cruise control button, which may be obstructed by dirt or debris, hindering its ability to activate. By systematically examining these potential issues, you can effectively diagnose and address the root cause of the cruise control malfunction in your Cadillac XT6.

Why is the Cruise Control Not Working in a Cadillac XT6?

When the cruise control in your Cadillac XT6 is malfunctioning, it’s crucial to address the issue promptly to avoid potential safety hazards and further mechanical complications. Common culprits include a failed control module, faulty sensors, or issues with the throttle actuation, which can lead to erratic engine behavior, such as excessive fuel consumption and black exhaust. Additionally, environmental factors like poor weather can impair the functionality of adaptive cruise control, while obstructions to the forward-looking camera or radar sensors can also disrupt performance. Neglecting these symptoms can not only compromise your driving safety but may also result in more significant repairs down the line, such as dealing with a blown fuse or a malfunctioning brake switch. Therefore, it’s essential to diagnose and resolve cruise control issues as soon as they arise to ensure a safe and reliable driving experience.

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