2007 Chevrolet Trailblazer Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Chevrolet Trailblazer and How to Fix Them

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Reviewed by
Andrew Hajjar
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 Chevrolet Trailblazer 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 Chevrolet Trailblazer 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 steps to diagnose the non-functioning cruise control in a 2007 Chevrolet Trailblazer?

To effectively diagnose the non-functioning cruise control in your 2007 Chevrolet Trailblazer, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can disrupt the system. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent engagement. Following this, verify the functionality of the speed sensor, which is essential for the cruise control to accurately detect and maintain the vehicle's speed. Additionally, check the brake pedal switch, as it is designed to disengage the cruise control when the brake is applied; a malfunction here can also lead to issues. If these components appear to be functioning correctly, use a diagnostic scanner to check for any error codes that may indicate specific problems within the cruise control system. Lastly, inspect the vacuum lines connected to the cruise control module for any leaks or damage, as these can significantly impact performance. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control malfunction in your Trailblazer.

What are the common problems that could cause the cruise control to stop working in a 2007 Chevrolet Trailblazer?

When the cruise control in your 2007 Chevrolet Trailblazer ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One frequent culprit is the vacuum actuator, which may fail or have damaged vacuum hoses, preventing the system from maintaining speed. Additionally, inspect the cable that connects the actuator to other components, as any damage here can disrupt the entire cruise control operation. Another critical factor to consider is the Powertrain Control Module (PCM), which can disable cruise control if certain conditions are not met, such as a malfunctioning center high mounted stop lamp (CHMSL). By systematically checking these components, you can identify the root cause of the cruise control failure and take the necessary steps to restore its functionality.

How urgent is it to address the non-functioning cruise control in a 2007 Chevrolet Trailblazer?

When it comes to the non-functioning cruise control in your 2007 Chevrolet Trailblazer, the urgency of addressing the problem largely hinges on your driving habits and reliance on this feature. For those who frequently embark on long drives or highway commutes, a malfunctioning cruise control can lead to increased fatigue and discomfort, making it essential to prioritize repairs. Moreover, while cruise control may not be a critical safety feature, ensuring that all vehicle systems are operational contributes to overall vehicle safety and reliability. Neglecting this issue could result in inconvenience during travel, especially on longer trips where maintaining a consistent speed is beneficial. Therefore, if you find yourself often using cruise control, it is advisable to address the malfunction promptly to enhance your driving experience and prevent any potential complications down the road.

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