2021 GMC Yukon XL Tire Pressure Warning Light Stays On

Addressing Tire Pressure Warning Light in 2021 GMC Yukon XL for Safe Driving

Find Repair Location
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 2021 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 2021 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 of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

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 2021 GMC Yukon XL?

When diagnosing the tire pressure warning light issue on your 2021 GMC Yukon XL, it's essential to adopt a systematic approach that begins with the simplest solutions. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they meet the recommended levels outlined in your owner's manual. If the pressure is correct, visually inspect each tire for any signs of damage, such as punctures or bulges, which could trigger the warning light. If the tires appear to be in good condition, the next step is to reset the tire pressure monitoring system (TPMS), as sometimes the system may require a reset to function correctly. Consult your owner's manual for specific instructions on how to perform this reset. Additionally, examine the TPMS sensors on each tire to confirm they are operational and undamaged. If, after completing these steps, the warning light remains illuminated, it may be time to seek professional assistance from a mechanic or dealership for a comprehensive diagnosis and repair. By following this methodical approach, you can effectively troubleshoot the issue and ensure your vehicle's safety on the road.

What could cause the tire pressure warning light to stay on in a 2021 GMC Yukon XL?

When the tire pressure warning light remains illuminated in a 2021 GMC Yukon XL, it can be attributed to several common problems that DIYers can investigate. The most frequent culprit is low tire pressure, which can easily be checked using a tire pressure gauge. Ensuring that all tires are inflated to the manufacturer's recommended levels is crucial for both safety and performance. If the tire pressure is adequate, the issue may lie with a faulty tire pressure sensor, which could require replacement if it is malfunctioning. Additionally, sensor calibration issues can arise, necessitating a recalibration process to ensure accurate readings; this can often be done by following the vehicle's manual. Electrical faults within the tire pressure monitoring system may also cause the warning light to stay on, requiring a more in-depth inspection of the system's wiring and connections. Lastly, external interference or obstructions around the sensors can disrupt their functionality, so clearing any debris or ensuring proper sensor placement is essential. By systematically addressing these potential issues, DIY enthusiasts can effectively troubleshoot the persistent tire pressure warning light in their GMC Yukon XL.

How urgent is it to address the tire pressure warning light that stays on in a 2021 GMC Yukon XL?

Addressing the tire pressure warning light that remains illuminated in your 2021 GMC Yukon XL is not just a matter of convenience; it is a critical safety concern that demands immediate attention. Ignoring this warning can lead to dangerous driving conditions, as improper tire pressure significantly impacts vehicle handling and braking capabilities. Furthermore, neglecting to check your tire pressure can result in uneven tire wear, which not only shortens the lifespan of your tires but also increases the risk of a blowout while on the road. Additionally, underinflated tires can severely affect your vehicle's fuel efficiency, leading to higher fuel costs over time. Lastly, a persistent warning light may indicate a malfunction in the Tire Pressure Monitoring System (TPMS), which could prevent you from receiving timely alerts about other potential tire issues. Therefore, it is essential to promptly investigate and resolve any tire pressure warnings to ensure your safety, protect your investment, and maintain optimal vehicle performance.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2021 GMC Yukon XL Tire Pressure Warning Light Causes & Fixes