2005 Pontiac Grand Am Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Pontiac Grand Am 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 Grand Am 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 Grand Am 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.

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 cruise control issue in a 2005 Pontiac Grand Am?

To effectively diagnose a cruise control issue in a 2005 Pontiac Grand Am, it's essential to adopt a systematic approach that begins with the simplest potential problems before progressing 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 to ensure it is operational, since a faulty switch can prevent the system from engaging. Following this, examine the brake pedal switch, which is crucial for disengaging the cruise control when brakes are applied; a malfunction here can lead to significant issues. Additionally, test the vehicle speed sensor, as it is vital for maintaining the set speed. Utilizing a diagnostic scanner to check for error codes can provide insights into specific problems affecting the cruise control system. Finally, inspect the wiring and connections for any signs of damage or corrosion, as faulty wiring can severely impact the system's performance. By methodically addressing these areas, you can effectively troubleshoot and resolve cruise control issues in your vehicle.

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

When troubleshooting cruise control issues in a 2005 Pontiac Grand Am, 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 can either prevent the cruise control from engaging or cause it to disengage unexpectedly. Additionally, a blown fuse within the cruise control system can disrupt its operation entirely, making it crucial to check the fuse box for any issues. Another potential problem is vacuum leaks in the engine, which can interfere with the system's ability to maintain speed accurately. Furthermore, a defective speed sensor can hinder the cruise control's performance, as it relies on accurate speed readings to function correctly. Lastly, issues with the throttle cable, such as fraying or stretching, can impede the system's ability to adjust the throttle position effectively. By systematically diagnosing these areas, DIYers can identify and address the root cause of cruise control failure, restoring functionality to their vehicle.

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

Addressing the malfunctioning cruise control in a 2005 Pontiac Grand Am is of utmost urgency due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can endanger both the driver and other road users. Additionally, a faulty cruise control system can distract the driver, leading to fatigue as they must constantly monitor and adjust their speed manually. This distraction not only increases the likelihood of accidents but can also result in higher fuel consumption due to inconsistent speed management. Furthermore, neglecting the issue may lead to more severe damage to the vehicle's electrical system, resulting in costly repairs down the line. Therefore, it is crucial to have the cruise control system inspected and repaired by a qualified mechanic as soon as possible to ensure safe driving conditions and maintain the vehicle's overall efficiency.

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2005 Pontiac Grand Am Cruise Control Issues & Repairs