2005 GMC Sierra 1500 HD Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 GMC Sierra 1500 HD 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
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 2005 GMC Sierra 1500 HD 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 2005 GMC Sierra 1500 HD 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 2005 GMC Sierra 1500 HD?

When faced with a non-functional cruise control in your 2005 GMC Sierra 1500 HD, it's crucial to approach the diagnosis methodically. Begin by checking the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, inspect the wiring for any signs of damage or loose connections, as these can disrupt the system's functionality. Testing the cruise control switch is also vital; if it’s faulty, it will prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide insights into specific malfunctions. If your vehicle uses a vacuum-operated system, ensure that the vacuum lines are intact and free from leaks, as any damage here can hinder performance. Lastly, verify that the brake and clutch switches are functioning correctly, as these components are designed to disengage the cruise control when necessary. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control issue in your GMC Sierra.

What are the common problems that could cause the cruise control to stop working in a 2005 GMC Sierra 1500 HD?

When troubleshooting cruise control issues in a 2005 GMC Sierra 1500 HD, it's essential to consider several common problems that could be affecting the system. One of the first things to check is the fuse associated with the cruise control; a blown fuse can easily disrupt its functionality. Additionally, the brake pedal switch plays a crucial role, as it is designed to disengage the cruise control when the brake is applied. If this switch is faulty, it may prevent the cruise control from engaging altogether. Another potential issue could be a defective cruise control module, which is essential for the system's operation. Furthermore, vacuum leaks within the cruise control system can lead to malfunctions, as they disrupt the necessary pressure for proper function. The speed sensor is also vital; if it is defective, the cruise control may struggle to maintain a set speed. Lastly, electrical issues, including problems with wiring or connections, can significantly impact the cruise control's performance. By systematically diagnosing these areas, you can effectively identify and resolve the cruise control issues in your GMC Sierra.

How urgent is it to repair the non-functioning cruise control in a 2005 GMC Sierra 1500 HD?

When evaluating the urgency of repairing the non-functioning cruise control in your 2005 GMC Sierra 1500 HD, it is crucial to recognize the potential safety risks associated with a malfunctioning system. A cruise control failure can lead to increased driver fatigue during long trips, as the driver may need to constantly adjust their speed manually, which can distract from the road and increase the likelihood of accidents. Additionally, the convenience that cruise control offers, particularly on highways, enhances the overall driving experience by allowing for a more relaxed journey. Furthermore, neglecting this repair could adversely affect the vehicle's resale value; prospective buyers often seek vehicles with fully operational features. Therefore, while it may not be as critical as addressing immediate safety concerns like brake issues, timely repair of the cruise control system is advisable to ensure a safe, comfortable driving experience and to maintain the vehicle's market value.

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