2007 GMC Sierra 2500 HD Classic Cruise Control Isn't Working

Fixing Cruise Control Malfunctions in 2007 GMC Sierra 2500 HD Classic

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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 2007 GMC Sierra 2500 HD Classic 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 2007 GMC Sierra 2500 HD Classic 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 2007 GMC Sierra 2500 HD Classic?

When troubleshooting the non-functional cruise control in your 2007 GMC Sierra 2500 HD Classic, start by checking the control module, sensor, and switch, as these components are often the culprits behind cruise control issues. Next, inspect the throttle actuation system for any irregularities that might hinder the cruise control's operation. It's also crucial to verify the fuses associated with the cruise control system; a blown fuse can easily disrupt functionality. Lastly, examine the brake switch, which is a frequent cause of cruise control failure, as it can prevent the system from engaging properly. By systematically addressing these areas, you can effectively diagnose and potentially resolve the cruise control malfunction in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2007 GMC Sierra 2500 HD Classic?

When troubleshooting the cruise control system in a 2007 GMC Sierra 2500 HD Classic, it's essential to consider several common issues that may be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, a blown fuse in the vehicle's fuse box can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward fix to check and replace if needed. Another potential issue is a defective cruise control module, which can lead to complete system failure if damaged. Furthermore, vacuum leaks within the cruise control system can hinder its ability to maintain speed, so inspecting hoses for any signs of wear or disconnection is crucial. Lastly, a malfunctioning speed sensor can also cause the cruise control to misbehave, as it is responsible for relaying the vehicle's speed to the system. By systematically checking these components, DIYers can effectively diagnose and address the issues affecting their cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2007 GMC Sierra 2500 HD Classic?

When it comes to the malfunctioning cruise control in your 2007 GMC Sierra 2500 HD Classic, the urgency of addressing the issue cannot be overstated. A malfunctioning cruise control system not only diminishes the convenience of long drives but also poses significant safety risks. If the cruise control fails unexpectedly, it can lead to erratic speed control, increasing the likelihood of accidents and driver fatigue. Moreover, the root causes of the malfunction can vary widely, from faulty sensors and switches to issues with the control module or throttle actuation. Each of these components plays a critical role in the system's overall functionality, and neglecting to troubleshoot and repair them can lead to more severe problems down the line. For instance, if specific settings are unresponsive, it may indicate a defective switch that requires immediate attention. Additionally, broken wires or faulty brake pedal switches can exacerbate the situation, making it essential to address these issues promptly. Ignoring the symptoms of a malfunctioning cruise control can result in ongoing inconvenience and heightened safety hazards, making it advisable to take action as soon as possible to ensure the reliable operation of this important feature in your vehicle.

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2007 GMC Sierra 2500 HD Cruise Control Troubleshooting