2018 GMC Yukon XL Tire Pressure Warning Light Stays On

Addressing Tire Pressure Warning Light in 2018 GMC Yukon XL for Safe Driving

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Tire Leaking Air
0%
30% chance it's the
Wheel Leaking Air
0%
15% chance it's the
Tire Pressure Monitoring System
0%
15% chance it's
Something else
The most common reasons a 2018 GMC Yukon XL tire pressure warning light stays on are a leaking tire, a wheel that no longer holds air, or a faulty tire pressure monitoring system.
  • Tire Leaking Air: A puncture, valve stem issue, or rim damage can cause a tire to leak air, leading to loss of pressure.
  • Wheel Leaking Air: A puncture or damage to the tire or rim can cause air to leak, resulting in a loss of tire pressure.
  • Tire Pressure Monitoring System: A malfunctioning tire pressure monitoring system can be caused by faulty sensors or a dead battery in the sensor units.
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 2018 GMC Yukon XL tire pressure warning light stays on?

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 a tire pressure monitoring sensor fails, the tire pressure monitoring system control module will recognize a loss in communication and turn on the warning lamp which indicates the failure. This is most often the case. However, the tire pressure monitoring sensor may also fail by reporting incorrect tire pressures. This could cause a flat tire to go unrecognized, or a properly inflated tire to signal a low or high tire pressure warning.

When a relearn is needed, for any reason, the TPMS warning light will illuminate, and many vehicles will display a message relating to the TPMS system being inoperative or loosing communication. It is important to keep a watchful eye on tire pressures when this system is having issues because there is no warning available for underinflation or overinflation of the tires.

The only symptoms requiring diagnosis for the tire pressure monitoring system warning lamp is if the warning lamp has illuminated while the tires have correct air pressure, or if the air pressure for the tires is out of specification and the warning lamp is off. This is because the overwhelming majority of cases where the TPMS lamp illuminates is due to the change in ambient temperature.

What steps should I take to diagnose the tire pressure warning light issue on my 2018 GMC Yukon XL?

To effectively diagnose the tire pressure warning light issue on your 2018 GMC Yukon XL, begin with a systematic approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by checking the tire pressure in all four tires, including the spare, using a reliable tire pressure gauge to ensure they meet the recommended levels outlined in your owner's manual. Next, visually inspect each tire for any signs of damage such as punctures, cuts, or bulges, as these can trigger the warning light. If the tire pressure is correct and no visible damage is found, consider resetting the tire pressure monitoring system (TPMS) according to the instructions in your manual, as this can sometimes resolve the issue. If the warning light remains illuminated, it may indicate a malfunction with the tire pressure sensors, which would require professional assessment and potential replacement. Lastly, driving the vehicle for a short distance can sometimes reset the system, so if the light persists after these checks, further investigation may be necessary. By following this diagnostic approach, you can efficiently identify and address the cause of the tire pressure warning light on your GMC Yukon XL.

What are the common causes for the tire pressure warning light to remain on in a 2018 GMC Yukon XL?

When the tire pressure warning light remains illuminated in your 2018 GMC Yukon XL, it can be a source of concern, but understanding the common causes can help you address the issue effectively. One of the primary reasons for this warning light is low tire pressure, which can occur due to natural air loss or temperature changes. Regularly checking and inflating your tires to the manufacturer's recommended pressure is essential for safety and performance. Another potential culprit is a faulty tire pressure sensor; if the sensor is malfunctioning, it may not provide accurate readings, causing the warning light to stay on. Additionally, the batteries in the tire pressure sensors have a limited lifespan and may need replacement if they are no longer functioning properly. In some cases, the entire sensor may need to be replaced if it is defective. Lastly, the tire pressure monitoring system may require recalibration to ensure it is providing accurate readings. By being aware of these common issues, you can take proactive steps to troubleshoot and resolve the tire pressure warning light concern, ensuring a safer driving experience.

How urgent is it to address the tire pressure warning light on a 2018 GMC Yukon XL that stays on?

Addressing the tire pressure warning light on a 2018 GMC Yukon XL is an urgent matter that should not be overlooked. Ignoring this warning can lead to serious safety concerns, as improper tire pressure significantly affects vehicle handling, braking, and stability, increasing the likelihood of accidents. Additionally, neglecting to maintain the correct tire pressure can result in uneven tire wear, which not only shortens the lifespan of your tires but also poses a risk of tire failure while driving. Furthermore, underinflated tires can severely impact fuel efficiency, leading to higher fuel costs over time. Ensuring that your tires are properly inflated is essential for optimal vehicle performance, especially in critical driving situations. Therefore, it is crucial to check your tire pressure regularly and address any warning lights immediately to maintain safety, performance, and cost-effectiveness in your driving experience.

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2018 GMC Yukon XL Tire Pressure Warning Light Guide