2005 Pontiac G6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Pontiac G6 and How to Fix Them

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Reviewed by
Aisha
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 Pontiac G6 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 Pontiac G6 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the steps to diagnose the cruise control issue in a 2005 Pontiac G6?

To effectively diagnose a cruise control issue in a 2005 Pontiac G6, it's essential to adopt a systematic approach that begins with the simplest potential problems before moving on to more complex diagnostics. Start by checking the fuse associated with the cruise control system, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control switch located on the steering wheel; a malfunctioning switch may prevent the system from engaging. Following this, examine the brake pedal switch, which is crucial for disengaging cruise control when the brakes are applied; if this switch is faulty, it can lead to persistent issues. Additionally, testing the vehicle speed sensor is vital, as it provides necessary data for the cruise control system to operate correctly. Finally, utilizing a diagnostic scanner to check for error codes can reveal specific problems affecting the cruise control functionality. By following this structured diagnostic approach, you can efficiently identify and address the underlying issues with the cruise control system in your Pontiac G6.

What are the common problems that could cause the cruise control to stop working in a 2005 Pontiac G6?

When troubleshooting cruise control issues in a 2005 Pontiac G6, it's essential to consider several common problems that could be at play. One of the primary culprits is a faulty brake pedal switch, which is designed to disengage the cruise control when the brake is applied; if this switch malfunctions, it can prevent the system from engaging. Additionally, problems with the speed sensor can disrupt the cruise control's ability to maintain a set speed, leading to erratic behavior or complete failure. A blown fuse is another straightforward issue to check, as it can cut power to the cruise control system entirely. Furthermore, vacuum leaks in the engine can interfere with the cruise control's operation, so inspecting the vacuum lines for any signs of damage is crucial. If these components check out, the cruise control module itself may be faulty and require replacement. Lastly, don't overlook potential electrical issues, such as corroded connectors or damaged wiring, which can also impede the system's functionality. By systematically addressing these common problems, you can effectively diagnose and potentially resolve the cruise control failure in your Pontiac G6.

How urgent is it to address the malfunctioning cruise control in a 2005 Pontiac G6?

Addressing a malfunctioning cruise control in a 2005 Pontiac G6 is of utmost urgency due to the significant safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can result in dangerous driving situations and increase the likelihood of accidents. Moreover, the constant need for manual speed control can distract the driver, leading to fatigue and reduced attention on the road. Ignoring these symptoms not only compromises safety but can also lead to higher fuel consumption and potential damage to the vehicle's engine and other components. Therefore, it is crucial to diagnose and repair any cruise control issues promptly to ensure the safety of all road users and maintain the vehicle's overall performance.

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