2018 Buick Enclave Speedometer Isn't Working

Diagnosing Common Causes of Speedometer Malfunctions in Your 2018 Buick Enclave and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Vehicle Speed Sensor (VSS)
0%
28% chance it's the
Speedometer
0%
23% chance it's the
Electrical Issue
0%
14% chance it's
Something else
The most common reasons a 2018 Buick Enclave speedometer isn't working are the vehicle speed sensor (VSS), a faulty speedometer, or an electrical issue.
  • Vehicle Speed Sensor (VSS): A faulty vehicle speed sensor can result in inaccurate speed readings and erratic transmission shifting.
  • Speedometer: A faulty speed sensor or a broken connection in the speedometer circuit can result in inaccurate speed readings.
  • Electrical Issue: A blown fuse or a short circuit in the wiring can cause various electrical issues in the vehicle's systems.
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 initial diagnostic steps to take when the speedometer isn't working on a 2018 Buick Enclave?

When faced with a malfunctioning speedometer in your 2018 Buick Enclave, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuse associated with the speedometer; a blown fuse is a common and easily fixable issue that can halt its operation. Next, inspect the speed sensor, as it plays a crucial role in relaying speed data to the speedometer. Look for any signs of damage or wear that could indicate a malfunction. Utilizing an OBD-II scanner to scan for error codes can provide further insights into the problem, helping you identify any specific issues related to the speedometer or speed sensor. Additionally, examine the wiring and connections linked to both the speed sensor and speedometer for any signs of damage or corrosion, as faulty wiring can disrupt the necessary signals. If these initial steps do not resolve the issue, consider testing the speedometer cluster itself, as the problem may reside within this component. By following this structured approach, you can effectively diagnose and address the speedometer issue in your Buick Enclave, ensuring a smoother and safer driving experience.

What are the common problems that could cause the speedometer to stop working in a 2018 Buick Enclave?

When your 2018 Buick Enclave's speedometer stops functioning, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty vehicle speed sensor, which is responsible for relaying speed information to the speedometer; if it malfunctions, you may experience erratic readings or a complete failure. Another potential issue is a broken speedometer cable, which can disrupt the connection needed for accurate speed display. Additionally, a blown fuse in the instrument panel can cut power to the speedometer, leading to a non-responsive gauge. It's also worth considering problems within the instrument cluster itself, such as wiring issues or a malfunctioning gauge, which can prevent the speedometer from working correctly. Lastly, the stepper motor, which controls the movement of the gauge needle, may fail, resulting in a stuck or inaccurate speedometer. By identifying these common problems, you can take the first steps toward diagnosing and resolving the issue, ensuring your speedometer functions properly once again.

How urgent is it to address the non-functioning speedometer in a 2018 Buick Enclave?

Addressing a non-functioning speedometer in a 2018 Buick Enclave is an urgent matter that should not be overlooked. The speedometer plays a critical role in ensuring that you are driving within legal speed limits, and a malfunction can lead to unintentional speeding, resulting in fines or even more severe legal repercussions. Moreover, the safety of both the driver and passengers is at stake; without accurate speed readings, you may find yourself driving too fast or too slow, increasing the likelihood of accidents. Additionally, the speedometer is linked to various vehicle systems, and neglecting this issue could lead to further complications that may affect overall vehicle performance. Lastly, if you plan to sell your vehicle in the future, a non-functioning speedometer can significantly diminish its resale value, as potential buyers may be deterred by unresolved maintenance issues. Therefore, it is crucial to address this problem as soon as possible to ensure compliance with the law, maintain safety, preserve vehicle performance, and protect your investment.

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2018 Buick Enclave Speedometer Issues & Repair Guide