2007 Hummer H3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Hummer H3 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 2007 Hummer H3 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 Hummer H3 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-functioning cruise control in a 2007 Hummer H3?

When faced with a non-functioning cruise control in your 2007 Hummer H3, it's crucial to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder the system's operation. Following this, verify the functionality of the speed sensors, since faulty sensors can disrupt the cruise control's ability to maintain speed. Additionally, examine the wiring connections associated with the cruise control system for any damage, corrosion, or loose connections that could be causing the malfunction. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the cruise control system. Finally, test the cruise control module itself to ensure it is functioning correctly, as a malfunctioning module can be the root cause of the problem. By methodically following these steps, you can effectively troubleshoot and potentially resolve the cruise control issue in your Hummer H3.

What are the common problems that could cause the cruise control to stop working in a 2007 Hummer H3?

When dealing with cruise control issues in a 2007 Hummer H3, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake pedal switch, which is designed to disengage the cruise control when the brake is pressed; if this switch malfunctions, it can prevent the system from engaging. Additionally, speed sensor issues can disrupt the vehicle's ability to maintain a constant speed, leading to cruise control failure. Another potential problem is a blown fuse within the cruise control system, which can easily be checked and replaced if necessary. The cruise control module itself may also be faulty, requiring replacement to restore functionality. Furthermore, vacuum leaks in the engine can impact cruise control operation, so identifying and repairing these leaks is crucial. Lastly, electrical problems, such as damaged wiring or connectors, can hinder the system's performance. By systematically addressing these issues, DIYers can effectively troubleshoot and resolve cruise control problems in their Hummer H3.

How urgent is it to address the non-functioning cruise control in a 2007 Hummer H3, considering safety and potential damage risks?

Addressing a non-functioning cruise control system in a 2007 Hummer H3 is of utmost urgency due to significant safety concerns and the potential for further vehicle damage. A malfunctioning cruise control can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which poses a serious risk to both the driver and other road users. This is particularly critical during long drives where cruise control is often relied upon to reduce fatigue and maintain focus. Additionally, neglecting this issue can result in more severe mechanical problems, as the underlying causes of the cruise control failure may affect other vehicle systems. For DIY enthusiasts, it is essential to recognize that timely inspection and repair not only enhance safety but also prevent escalating repair costs. Therefore, if you notice any signs of malfunction, it is advisable to take immediate action to diagnose and resolve the issue, ensuring both your safety and the longevity of your vehicle.

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