2008 Chevrolet Suburban 1500 Cruise Control Isn't Working

Fixing Cruise Control Malfunctions in 2008 Chevrolet Suburban 1500

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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 2008 Chevrolet Suburban 1500 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 2008 Chevrolet Suburban 1500 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 2008 Chevrolet Suburban 1500?

When troubleshooting the non-functioning cruise control in a 2008 Chevrolet Suburban 1500, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse is a straightforward issue that can easily disrupt the system. Next, inspect the cruise control switch located on the steering wheel; a malfunctioning switch may require replacement. It's also crucial to verify that the brake lights are operational, since a faulty brake light switch can prevent the cruise control from engaging. Additionally, examine the vehicle speed sensor, as its failure can directly impact the cruise control's functionality. Finally, utilize a diagnostic scanner to check for any stored error codes in the vehicle's onboard computer system, which can provide insights into underlying issues. By following these steps, you can effectively identify and address the causes of cruise control malfunction, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to stop working in a 2008 Chevrolet Suburban 1500?

When dealing with a malfunctioning cruise control system in a 2008 Chevrolet Suburban 1500, it's essential to understand the common problems that may be at play. One frequent issue is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to deactivate when the brake pedal is pressed. Additionally, a blown fuse in the vehicle's electrical system can disrupt the cruise control function, making it crucial to check the fuse box for any blown fuses. Another potential culprit is a defective speed sensor, which is vital for the cruise control to maintain a set speed; if this sensor is not functioning correctly, it can lead to erratic behavior or complete failure of the system. Furthermore, vacuum leaks in the engine can significantly impact the cruise control's operation, as these leaks disrupt the necessary vacuum supply. Lastly, a malfunctioning cruise control module itself can be the root cause of the problem, leading to improper operation or total inoperability. By systematically checking these components, DIYers can effectively diagnose and potentially resolve the cruise control issues in their Suburban.

How urgent is it to address the non-functioning cruise control in a 2008 Chevrolet Suburban 1500?

When it comes to the non-functioning cruise control in a 2008 Chevrolet Suburban 1500, understanding the urgency of the situation is crucial for any DIY enthusiast. While the absence of cruise control may not pose an immediate safety risk, it can indicate underlying electrical issues that, if left unaddressed, could lead to more significant problems down the line. The convenience of cruise control is particularly valuable during long drives, allowing for a more relaxed driving experience. However, neglecting this issue could result in further complications, such as increased wear on the vehicle's components or even a complete failure of related systems. Therefore, it is advisable to inspect and diagnose the cruise control system promptly. By doing so, you not only restore a useful feature of your vehicle but also ensure that any potential issues are caught early, maintaining the overall performance and reliability of your Chevrolet Suburban.

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