2005 GMC Savana 1500 Cruise Control Isn't Working

Fixing Cruise Control Issues in 2005 GMC Savana 1500

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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 Savana 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 Savana 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.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What are the steps to diagnose the non-functioning cruise control in a 2005 GMC Savana 1500?

To effectively diagnose the non-functioning cruise control in your 2005 GMC Savana 1500, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by examining 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 visible damage or loose connections, as faulty wiring can disrupt the system's functionality. After ensuring the wiring is intact, test the cruise control switch located on the steering wheel; a malfunctioning switch is often a culprit in cruise control failures. If these initial checks do not resolve the issue, utilize a diagnostic scanner to identify any error codes that may provide insight into specific problems. Additionally, if your vehicle's cruise control relies on vacuum lines, inspect these for leaks or damage, as this can significantly impact performance. Finally, assess the cruise control module for any signs of damage or malfunction, as this component is essential for the system's operation and may require replacement if found defective. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

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

When dealing with cruise control issues in a 2005 GMC Savana 1500, several common problems may be at play. One of the primary culprits is a failed control module, which can disrupt the system's functionality. Additionally, sensor or switch malfunctions can prevent the cruise control from engaging properly. Throttle actuation problems are also frequent, as they can hinder the system's ability to maintain speed. It's important to check for a blown fuse or a defective brake pedal switch, as these components are critical for cruise control operation. In older models, a broken vacuum line may be responsible for the failure, particularly in systems that rely on vacuum pressure. Lastly, issues with the throttle control system or the ABS can further complicate matters. By understanding these potential failure modes, DIYers can effectively diagnose and address the underlying issues, ensuring their vehicle's cruise control operates safely and efficiently.

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

When it comes to the non-functioning cruise control in a 2005 GMC Savana 1500, understanding the urgency of the situation is crucial for any DIY enthusiast. While it may seem like a minor inconvenience, neglecting this issue can lead to increased driver fatigue, especially during long trips where maintaining a constant speed is essential for comfort. Moreover, a malfunctioning cruise control system could signal deeper problems within the vehicle, such as issues with the control module, sensors, or wiring. These underlying issues not only compromise the functionality of your cruise control but could also pose safety risks if left unaddressed. Simple fixes, like replacing a blown fuse or a faulty brake light switch, can often resolve the problem quickly and affordably. Therefore, while it may not be an immediate emergency, addressing the non-functioning cruise control promptly can enhance your driving experience, ensure safety, and prevent more significant repairs in the future.

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