2018 Chevrolet LCF 3500 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2018 Chevrolet LCF 3500

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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 2018 Chevrolet LCF 3500 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.

What are the steps to diagnose the non-functioning cruise control in a 2018 Chevrolet LCF 3500?

To diagnose the non-functioning cruise control in your 2018 Chevrolet LCF 3500, begin with the simplest checks to avoid unnecessary complications. Start by inspecting the cruise control fuse located in the fuse box; a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. Following this, check the vehicle's speed sensors, which are essential for cruise control operation; if they are malfunctioning, the system will not work correctly. Utilizing a diagnostic scanner can help you identify any error codes related to the cruise control system, providing insight into potential electronic issues. If these initial checks do not resolve the problem, proceed to test the cruise control module to confirm it is sending the correct signals. Additionally, inspect the wiring and connections associated with the cruise control system for any signs of damage or loose connections. If, after all these steps, the cruise control still does not function, it may be time to consult a professional mechanic who specializes in Chevrolet vehicles for a thorough diagnosis and repair. By following this structured approach, you can effectively troubleshoot and potentially resolve the cruise control issue on your own.

What are the common problems that could cause the cruise control to stop working in a 2018 Chevrolet LCF 3500?

When the cruise control in a 2018 Chevrolet LCF 3500 ceases to function, several common problems may 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. Another potential issue is a malfunctioning speed sensor, which is crucial for the cruise control to maintain a consistent speed. Additionally, a blown fuse within the cruise control system can lead to its failure, making it essential to check and replace any damaged fuses. Problems with the throttle actuator control module can also disrupt the cruise control's operation, often requiring professional diagnosis and repair. Electrical issues, such as faulty wiring or a defective cruise control switch, can further complicate matters. Lastly, software glitches in the vehicle's computer system may cause the cruise control to stop working, and updating or resetting the software could resolve these issues. For a thorough diagnosis and repair, consulting a qualified mechanic is advisable, especially if the problem persists after basic troubleshooting.

How urgent is it to repair the non-functioning cruise control on a 2018 Chevrolet LCF 3500?

When evaluating the urgency of repairing the non-functioning cruise control on your 2018 Chevrolet LCF 3500, it's essential to weigh the convenience it offers against your driving patterns. While cruise control enhances comfort and can improve fuel efficiency, it is not classified as a critical safety feature like brakes or airbags. Therefore, the decision to prioritize this repair largely hinges on how often you drive on highways or long distances where cruise control is particularly beneficial. If your driving routine involves frequent highway travel, addressing the malfunction sooner can significantly enhance your driving experience and reduce fatigue. Conversely, if your trips are mostly short and involve city driving, you might opt to postpone the repair. However, neglecting the issue could lead to further complications, potentially affecting the vehicle's overall functionality. Thus, while the immediate safety risk may be low, timely attention to the cruise control system is advisable to maintain the vehicle's convenience and performance.

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2018 Chevrolet LCF 3500 Cruise Control Problems & Solutions