Is Your GMC Yukon Cruise Control Not Working? Here’s What You Can Do

The GMC Yukon Cruise Control is a feature that allows the vehicle to maintain a set speed without the need for the driver to continuously adjust the accelerator. However, if the Cruise Control is not working properly it can be incredibly inconvenient for the driver. Common issues that can cause a GMC Yukon Cruise Control to not work include problems with sensors, switches, wiring and fuses. These issues can often be identified and solved through simple troubleshooting steps. In some cases, however, more in-depth repairs may be necessary in order to fix the issue.

Check the Cruise Control Switch

When a GMC Yukon’s cruise control is not working, the first thing you should check is the cruise control switch. This switch can be found on the dashboard, near the steering wheel. If you find that the switch is not functioning properly, it may be due to a faulty connection or a broken wire. To fix this issue, you will need to open up your car’s fuse box and check for any loose wires or connections. If all looks good in there, then you may need to replace the switch itself.

Check the Brake Lights

The next step in troubleshooting your GMC Yukon’s cruise control system is to check the brake lights. When you press down on the brake pedal, your brake lights should light up on your dashboard. If they are not lighting up when you press down on the brakes, there may be an issue with either a faulty wiring connection or a broken wire somewhere in your vehicle’s electrical system. To fix this issue, you will need to open up your car’s fuse box and inspect all of its wiring connections for any signs of damage or corrosion.

Check the Fuse Box

If all of your car’s wiring connections look good but your cruise control still isn’t working properly, then it might be time to check your vehicle’s fuse box. Inside of this box you will find several fuses that can become damaged over time due to wear and tear from use and age. To fix any issues with these fuses, simply replace them with new ones of the same size and rating as specified in your user manual or by a qualified mechanic.

Check for a Faulty Wiring Connection

Faulty wiring connections can also cause problems with GMC Yukon’s cruise control system not functioning properly. To inspect for any faulty wiring connections in your vehicle’s electrical system, open up its fuse box and carefully look at each wiring connection for any signs of damage or corrosion. If any are found, they should be fixed immediately as they can cause further issues if left unchecked.

Look for a Broken Cruise Control Cable

Finally, if all else fails and none of these steps have fixed your GMC Yukon’s cruise control issue then it could be due to a broken cable somewhere in its engine bay area. The cable connects from the throttle body to the cruise control module located underneath your dashboard near where it meets with the steering wheel column. Inspecting this cable for signs of damage is easy enough – simply start at one end and follow it along until it reaches its other end – and replacing it requires no more than some basic tools like pliers and screwdrivers so repairs should not take too long should this be found to be causing problems with your vehicle’s cruise control system not functioning properly.

Consider a Vacuum Leak in the System

If the cruise control on your GMC Yukon is not working, one of the first things to check is if there is a vacuum leak in the system. A vacuum leak can cause the cruise control to malfunction, as it affects the ability of the engine to regulate its speed. To check for a vacuum leak, start by checking all of the hoses and connections for signs of wear and tear. Look for any cracks or damage that could be letting air into the system. If there are any issues, replace or repair them as necessary.

Inspect the Cruise Control Servo

The next step in troubleshooting your GMC Yukon’s cruise control system is to inspect the cruise control servo. The servo is responsible for controlling how much fuel is injected into the engine, which affects its speed. Check that all connections are secure and that there are no signs of corrosion or damage. If necessary, replace any faulty wiring or other components to ensure that everything is functioning properly.

Look for Software Issues with the ECM

The Electronic Control Module (ECM) can also be responsible for cruise control issues on your GMC Yukon. Check that all software updates have been applied and that all settings are correctly configured. If necessary, you may need to reprogram or reset the ECM in order to get it functioning correctly again.

Investigate Any ECM Related Codes

If you find any fault codes related to the ECM on your GMC Yukon’s diagnostic reader, then further investigation may be necessary in order to pinpoint exactly where the issue lies. It may be something as simple as a wiring issue or as complex as a problem with one of the sensors that communicate with the ECM. Make sure you troubleshoot thoroughly before replacing any parts to ensure that you identify and correct any underlying issues first.

Take It To A Professional Mechanic If Necessary

If all else fails and you can’t seem to get your GMC Yukon’s cruise control system functioning correctly again, then it may be best to take it into a professional mechanic who can diagnose and fix any underlying issues quickly and efficiently. They will have access to special tools and diagnostic equipment which can quickly pinpoint where exactly in your vehicle’s systems there is an issue so they can fix it quickly and get you back on track again!

FAQ & Answers

Q: What should I check if my GMC Yukon cruise control is not working?
A: If your GMC Yukon cruise control is not working, you should first check the cruise control switch, brake lights, and fuse box. You should also look for a faulty wiring connection, a broken cruise control cable, or a vacuum leak in the system. Additionally, you should inspect the cruise control servo and look for software issues with the ECM or ECM related codes.

Q: What might cause my GMC Yukon’s cruise control to fail?
A: There are several potential causes of GMC Yukon cruise control failure. These include a faulty wiring connection, a broken cruise control cable, a vacuum leak in the system, an issue with the cruise control servo, software issues with the ECM or ECM related codes.

Q: How can I tell if there is a problem with my GMC Yukon’s wiring connection?
A: If there is an issue with your GMC Yukon’s wiring connection, it can usually be identified by visual inspection and testing of the components. You may also need to use a multimeter to test for loose connections or short circuits in order to diagnose any electrical problems.

Q: Do I need to take my GMC Yukon to a professional mechanic if it has cruise control problems?
A: In some cases, it may be necessary to take your GMC Yukon to a professional mechanic if it has cruise control problems. This is especially true if you are unable to identify and fix the issue yourself after inspecting all of the components and troubleshooting steps listed above. A professional mechanic will have access to specialized tools that can help diagnose and repair more complex issues.

Q: Is it possible for me to repair any issues with my GMC Yukon’s cruise control myself?
A: Yes, in many cases it may be possible for you to repair any issues with your GMC Yukon’s cruise control yourself by following all of the troubleshooting steps listed above. However, if you are unable to identify and fix the issue yourself after inspecting all of the components and troubleshooting steps listed above then it may be necessary for you take your vehicle into a professional mechanic for further diagnosis and repairs.

In conclusion, it is evident that the GMC Yukon cruise control is not working properly due to various reasons. The most common ones are a faulty cruise control module, a disconnected electrical connector, or a damaged relay. Therefore, it is important to check all these components before attempting any repairs. If the issue still persists, it is recommended to take the vehicle to an authorized service center for further diagnosis and repair.

Author Profile

Carl Frisch

With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics (at Palo Alto Bicycles) and later as a working partner in my own store.

As the shop owner of Spoke n’ Word Cycles in Socorro, NM, the success of the mission was my responsibility, which I pursued passionately since we opened in 2003 through the spring of 2011. I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.

As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigners, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.

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