2005 GMC Sierra 1500 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 GMC Sierra 1500 and How to Fix Them

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Reviewed by
Bo Fader
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 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 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?

When troubleshooting the non-functional cruise control in a 2005 GMC Sierra 1500, start with the simplest checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse; a blown fuse is a common and easily fixable issue that can prevent the system from operating. Next, examine the brake pedal and throttle body for any obstructions or malfunctions, as these components directly influence cruise control functionality. If these initial checks do not resolve the issue, assess the control module, sensors, and switches for any signs of failure, as these are frequent culprits in cruise control problems. Additionally, if the check engine light is illuminated, it’s advisable to use an OBD2 scan tool to identify any underlying issues that may be affecting the cruise control system. By systematically following these steps, you can effectively diagnose and potentially resolve the cruise control malfunction in your GMC Sierra 1500.

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

When troubleshooting the cruise control system in a 2005 GMC Sierra 1500, it's essential to consider several common problems that could be at play. One of the primary culprits is a faulty brake light switch, which is crucial for the cruise control's operation; if this switch malfunctions, it may prevent the system from engaging, as it is designed to deactivate when the brake pedal is pressed. Another potential issue is a defective cruise control module, which can disrupt the system's functionality and lead to complete failure. Additionally, a broken speed sensor can hinder the cruise control's ability to maintain a set speed, causing it to stop working altogether. It's also worth checking for a blown fuse in the vehicle's electrical system, as this can interrupt the power supply to the cruise control. Lastly, vacuum leaks within the cruise control system can significantly impact its performance, leading to operational issues. By systematically examining these areas, DIYers can effectively diagnose and address the problems affecting their cruise control system.

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

Addressing the non-functioning cruise control in your 2005 GMC Sierra 1500 is important, even if it may not seem urgent at first glance. While the absence of this feature does not directly compromise the safety or drivability of your vehicle, it can significantly detract from your driving comfort, especially during long trips where maintaining a steady speed is beneficial. Ignoring this issue could lead to increased frustration on the road, particularly in situations where cruise control would typically enhance your driving experience. Moreover, early intervention can prevent minor issues from escalating into more serious problems that could require costly repairs down the line. By taking the time to diagnose and fix the cruise control system promptly, you not only restore a valuable convenience but also safeguard against potential complications that could arise from neglecting the problem.

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2005 GMC Sierra 1500 Cruise Control Issues & Repairs