Hey there, fellow Chevy Trax enthusiasts! So, you're here because your 2017 Chevy Trax LS cruise control isn't cooperating? Don't sweat it, you're definitely not alone. Cruise control is a fantastic feature, especially on those long highway drives, and when it malfunctions, it can be a real pain. This guide is designed to walk you through everything you need to know about troubleshooting and, hopefully, fixing your 2017 Chevy Trax LS cruise control issues. We'll cover common problems, potential solutions, and even a few preventative measures to keep your system running smoothly. Let's get started, shall we?

Understanding Your 2017 Chevy Trax LS Cruise Control System

Before we dive into the nitty-gritty of troubleshooting, it's helpful to have a basic understanding of how the cruise control system in your 2017 Chevy Trax LS works. This knowledge will make it easier to identify the source of the problem and implement the correct fix. Generally, cruise control systems, like the one in your Trax, rely on a combination of electronic and mechanical components working in sync. The main components involved include the cruise control switch (usually located on the steering wheel), the powertrain control module (PCM), speed sensors, and the throttle actuator. When you activate the cruise control, the system monitors your vehicle's speed and adjusts the throttle to maintain the set speed. Pretty cool, right? The system also disengages when you tap the brakes, press the clutch (if you have a manual transmission), or turn the system off. Understanding these basic components and their functions will help you narrow down the issue if your cruise control isn't working as expected. Also, modern cruise control systems are quite sophisticated, often integrating with other vehicle systems, like anti-lock brakes (ABS) and stability control, to provide a safer and more efficient driving experience. If any of these interconnected systems have issues, they can sometimes affect the cruise control's functionality. So, keeping this in mind, let's move on to the most common problems you might encounter. We'll cover each one in detail, so you'll be well-equipped to tackle them!

Common Problems with 2017 Chevy Trax LS Cruise Control

Alright, guys, let's get down to the most likely culprits behind your cruise control woes. Here's a breakdown of the most common issues you might face with your 2017 Chevy Trax LS cruise control, along with some clues to help you identify the problem:

Faulty Cruise Control Switch

The cruise control switch is the primary interface for your cruise control system. If this switch is damaged or malfunctioning, your system won't activate. This is often one of the first things to check. Symptoms of a faulty switch include the cruise control light not illuminating on the dashboard when you press the button, or the cruise control failing to engage altogether. The switch can fail due to wear and tear, internal electrical problems, or even spilled liquids. A simple visual inspection of the switch might reveal any obvious damage. However, more often than not, you'll need to use a multimeter to check for continuity, confirming whether the switch is sending the proper signals. Replacing the switch is generally a straightforward task, usually involving removing a cover or trim around the steering wheel and unplugging the old switch before installing the new one. Always disconnect the negative battery cable before working on any electrical components to prevent shorts and potential damage. This is a crucial safety step to remember when dealing with your vehicle's electrical system.

Blown Fuse

Fuses act as the guardians of your car's electrical circuits, protecting them from power surges and short circuits. If the fuse that supplies power to the cruise control system blows, the system won't function. This is a relatively easy problem to diagnose and fix. Check your owner's manual to locate the fuse box and identify the fuse specifically for the cruise control system. A visual inspection is usually enough to spot a blown fuse – look for a broken wire within the fuse body. If the fuse is blown, replace it with a fuse of the same amperage rating. Never use a fuse with a higher amperage rating, as this can damage the electrical components. If the fuse blows again shortly after replacing it, there might be a short circuit somewhere in the system, and you'll need to have it professionally diagnosed. This is a sign that there might be a deeper electrical issue at play, which is best handled by a qualified mechanic to prevent further damage to the vehicle.

Problems with Brake Light Switch

The brake light switch plays a critical role in the cruise control system. It's designed to automatically disengage the cruise control when you apply the brakes. If the brake light switch malfunctions, it might continuously signal that the brakes are being applied, even when you're not braking, causing the cruise control to fail. Symptoms include the cruise control not engaging, or it disengaging unexpectedly. You can test the switch by checking your brake lights while the car is running. If your brake lights are constantly on, the switch is likely faulty. You may also notice that your cruise control does not activate at all or disengages as if you're tapping the brakes. Replacing the brake light switch is a common repair and is often relatively inexpensive. However, remember to disconnect the negative battery cable before beginning the replacement to avoid any electrical issues.

Throttle Position Sensor (TPS) Issues

The throttle position sensor (TPS) informs the engine control unit (ECU) about the position of the throttle. This data is critical for controlling the engine's fuel supply and maintaining the correct speed. A faulty TPS can cause various issues, including problems with the cruise control. Symptoms might include erratic cruise control behavior, such as the car accelerating or decelerating unexpectedly while cruise control is engaged. Other issues like poor acceleration or a rough idle could also indicate a TPS problem. Diagnosing a TPS issue may require a scan tool to read the sensor's output and verify its performance. Replacing the TPS can resolve the cruise control issue, but it's important to rule out other possible causes first. Always follow the manufacturer's recommended procedures when replacing any sensor to ensure proper calibration and function. Proper calibration is necessary to ensure that the new sensor accurately relays information to the ECU.

Speed Sensor Malfunction

Speed sensors provide the crucial speed data that the cruise control system needs to maintain a set speed. If a speed sensor malfunctions, the cruise control system won't function correctly, or it might function erratically. There are usually multiple speed sensors in a modern vehicle. The symptoms of a speed sensor issue may include the cruise control not engaging, or it disengaging without any apparent reason. Other potential symptoms could include issues with the speedometer, anti-lock brakes, or stability control systems. Diagnosing a speed sensor issue might involve using a scan tool to read the sensor's output and verify its performance. Replacing a speed sensor often resolves the issue. However, you'll need to locate the faulty sensor, which can vary depending on the specific sensor and your vehicle's model. Consult your vehicle's service manual for specific instructions on how to access and replace the speed sensors. It’s also wise to check the wiring and connectors associated with the speed sensors for corrosion or damage, which might be the underlying cause of the problem.

Troubleshooting Steps for Your 2017 Chevy Trax LS Cruise Control

Alright, let's get our hands dirty and start troubleshooting! Here's a step-by-step guide to help you diagnose the problem with your cruise control:

Step 1: Visual Inspection

Begin with a visual inspection. Check the cruise control switch on the steering wheel for any obvious damage. Inspect the fuse box, looking for a blown fuse. Check the brake lights to see if they're working correctly. Look for any loose or disconnected wires around the steering wheel and under the hood, especially near the throttle body and brake light switch. This simple check can sometimes reveal the problem quickly.

Step 2: Check the Fuses

Locate the fuse box (consult your owner's manual to find its location) and identify the fuse for the cruise control system. Remove the fuse and visually inspect it. If the wire inside the fuse is broken, replace it with a fuse of the same amperage rating. Always make sure the replacement fuse has the same rating as the original; otherwise, you risk damaging your car’s electrical system. After replacing the fuse, test the cruise control to see if it's working. If the new fuse blows immediately, there might be a short circuit, and you'll need to seek professional assistance.

Step 3: Test the Brake Light Switch

Have someone observe your brake lights while you step on the brake pedal. If the brake lights are constantly on, the brake light switch is likely faulty. The switch may need to be replaced. Ensure the brake lights turn on and off correctly as you press and release the brake pedal. If the brake lights are not functioning correctly, replace the switch as it could be the cause of your cruise control issue. While replacing the brake light switch, also inspect the wiring and connectors for any signs of damage or corrosion, as these can also cause problems.

Step 4: Use a Scan Tool

If the visual inspection and fuse check don't reveal the problem, you may need to use an OBD2 scan tool. This tool can read diagnostic trouble codes (DTCs) that might indicate a problem with the cruise control system or related components, such as the throttle position sensor or speed sensors. Connect the scan tool to the OBD2 port (usually located under the dashboard on the driver's side) and run a scan. The scan tool will display any stored DTCs. Consult your vehicle's service manual or a reliable online resource to interpret the codes and determine the next steps. Clear the codes after making repairs and retest the cruise control to see if the issue is resolved.

Step 5: Check Wiring and Connections

Carefully inspect the wiring and connections related to the cruise control system. Look for any frayed wires, loose connections, or corrosion. Disconnect and reconnect the connectors to ensure a good connection. This step is particularly important if you live in an area with harsh weather conditions or if your car has been exposed to moisture, as corrosion can easily disrupt electrical signals. Repair any damaged wiring or replace any corroded connectors. Ensure all connectors are securely fastened.

Potential Solutions and Repairs

Based on your diagnosis, here are some potential solutions and repairs you might need to perform:

Replacing the Cruise Control Switch

This is usually a straightforward repair. Disconnect the negative battery cable, remove any trim or covers around the steering wheel to access the switch, unplug the old switch, and install the new one. Ensure the new switch is the correct part for your vehicle. Reconnect the battery cable and test the cruise control.

Replacing the Fuse

As mentioned earlier, replacing a blown fuse is a simple fix. Locate the correct fuse, remove the old one, and install a new fuse of the same amperage rating. Test the cruise control to make sure it's working. If the fuse blows again, seek professional help.

Replacing the Brake Light Switch

Disconnect the negative battery cable. Locate the brake light switch (usually near the brake pedal), disconnect it, and remove it. Install the new switch, reconnect the wiring, and test the brake lights and cruise control. You can usually find tutorials and videos online that will show you exactly how to replace the brake light switch in your vehicle.

Replacing the Throttle Position Sensor (TPS)

This can be a more involved repair. Consult your vehicle's service manual for the location of the TPS. Disconnect the sensor, remove it, and install the new one. Make sure to properly calibrate the new TPS if required. This is often necessary for optimal performance. Reconnect the wiring and test the cruise control.

Replacing Speed Sensors

Depending on the specific sensor, this can be relatively easy or more complex. Locate the faulty speed sensor (consult your service manual). Disconnect the sensor, remove it, and install the new one. Check the wiring and connections. Test the cruise control and other systems that rely on speed sensors, such as the speedometer and ABS system.

Preventative Measures to Keep Your Cruise Control Working

Prevention is always better than cure! Here are some preventative measures you can take to keep your cruise control system in tip-top shape:

Regular Maintenance

Follow your vehicle's recommended maintenance schedule. This includes regular inspections of the electrical system, including fuses, wiring, and connectors. Regular maintenance helps catch potential problems before they become major issues. Proper maintenance will ensure that all components are functioning as they should and that any potential issues are addressed before they impact your cruise control.

Check for Warning Signs

Pay attention to any warning signs, such as the cruise control light not illuminating, erratic behavior, or the system disengaging unexpectedly. Address these issues promptly to prevent further problems. Early detection can prevent more extensive and costly repairs in the future. Don’t ignore any unusual behavior; these could be early indicators of a more serious problem.

Protect Electrical Components

Protect your vehicle's electrical components from moisture and corrosion. If you live in an area with harsh weather conditions, consider using electrical contact cleaner or dielectric grease to protect connectors. Ensure the drain holes around the engine compartment are clear to prevent water buildup. Regularly inspect all electrical connections for any signs of corrosion and address it immediately.

Avoid Modifications

Avoid making any modifications to your vehicle's electrical system, especially if you're not experienced. Incorrect modifications can damage the cruise control system and other components. If you plan to upgrade any electrical components, consult with a qualified mechanic to ensure the modifications are done correctly and do not compromise the vehicle’s systems.

When to Seek Professional Help

While many cruise control issues can be diagnosed and fixed at home, some problems require professional expertise. You should seek professional help if:

You're Uncomfortable with Electrical Work

Working with electrical components can be dangerous if you're not experienced. If you're not comfortable working with electricity, it's best to take your vehicle to a qualified mechanic. Electrical work, if done improperly, can result in injury or damage to your vehicle. Professionals have the training and tools to safely diagnose and repair complex electrical issues.

The Problem Persists

If you've tried the troubleshooting steps and the cruise control still isn't working, it's time to seek professional assistance. A mechanic will have the diagnostic tools and expertise to identify the underlying problem. A mechanic can properly diagnose complex issues using professional-grade tools that are not typically available to the average vehicle owner. They can often provide a more accurate diagnosis and a more efficient repair.

You Suspect a Complex Issue

If you suspect a complex issue, such as a problem with the PCM or other electronic components, it's best to leave it to the professionals. These issues often require specialized knowledge and equipment. Complex electronic problems require specialized knowledge of vehicle systems and diagnostics. Attempting to repair complex issues without the proper knowledge or tools could result in further damage to your vehicle.

Conclusion: Keeping Your Chevy Trax LS Cruise Control in Top Shape

There you have it, guys! A comprehensive guide to troubleshooting your 2017 Chevy Trax LS cruise control. By following these steps and taking preventative measures, you can keep your cruise control working smoothly and enjoy those long drives with ease. Remember to always prioritize safety when working on your vehicle and don't hesitate to seek professional help if you're unsure about any repairs. Happy driving!

I hope this guide has been helpful! If you have any questions or need further assistance, don't hesitate to ask. Happy motoring, and stay safe on the road! Always remember to consult your vehicle's owner's manual and, if in doubt, consult a qualified mechanic for any repairs or diagnostics. This is a very important step to ensure the safety and proper functioning of your vehicle. Enjoy the road! Good luck, and keep cruising! Remember, a well-functioning cruise control system will make your driving experience significantly more comfortable, especially on those long journeys.