2021 Chevrolet Silverado 1500 Speedometer Isn't Working

Common Causes of Speedometer Malfunctions in Your 2021 Chevrolet Silverado 1500 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2021 Chevrolet Silverado 1500 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 steps to diagnose a non-functioning speedometer in a 2021 Chevrolet Silverado 1500?

To effectively diagnose a non-functioning speedometer in your 2021 Chevrolet Silverado 1500, begin with the simplest solutions. Start by checking the fuse associated with the speedometer in the fuse box, as a blown fuse is a common and easily fixable issue. If the fuse is intact, proceed to inspect the speed sensor located on the transmission, as this component is crucial for relaying speed data to the speedometer. Look for any signs of damage or malfunction. Next, examine the wiring connections linked to the speedometer; loose or damaged wires can disrupt the signal and cause the speedometer to fail. If these components appear to be in good condition, utilize an OBD-II scanner to check for any error codes that may indicate specific problems within the speedometer system. Finally, if all previous checks yield no results, the issue may lie within the speedometer cluster itself, which can be tested to determine if it requires repair or replacement. By following this structured approach, you can systematically identify and address the root cause of your speedometer issue.

What are the common problems that could cause the speedometer to stop working in a 2021 Chevrolet Silverado 1500?

When troubleshooting a non-functioning speedometer in a 2021 Chevrolet Silverado 1500, it's important to consider several common problems that could be at play. One of the primary culprits is a faulty vehicle speed sensor, which is responsible for relaying speed information to the speedometer; if this sensor fails, it can result in inaccurate readings or a complete stop in functionality. Another potential issue is a broken speedometer cable, which, if damaged, can disrupt the connection necessary for the speedometer to display the correct speed. Additionally, a blown fuse in the instrument panel can also lead to a non-operational speedometer, making it a simple fix that should be checked first. Problems within the instrument cluster itself, such as wiring issues or malfunctioning gauges, can further complicate matters, as they may prevent the speedometer from working properly. Lastly, issues with the electronic control module (ECM), which oversees various vehicle functions including the speedometer, can also result in failure. For those looking to tackle this issue themselves, it's crucial to systematically check each of these components to identify the root cause of the problem, ensuring that the speedometer is restored to proper working order.

How urgent is it to address the malfunctioning speedometer in a 2021 Chevrolet Silverado 1500?

Addressing a malfunctioning speedometer in a 2021 Chevrolet Silverado 1500 is of utmost urgency due to several compelling reasons. First and foremost, safety is a primary concern; an inaccurate speedometer can lead to unintentional speeding, putting both the driver and others on the road at risk. Additionally, there are legal implications to consider; driving with a faulty speedometer can result in fines or penalties if you are stopped for speeding or involved in an accident. Furthermore, the speedometer plays a crucial role in monitoring the vehicle's overall performance, and neglecting this issue can lead to suboptimal operation and decreased efficiency. Lastly, timely intervention can prevent further damage to related components, potentially saving you from costly repairs in the future. Therefore, it is essential to prioritize the repair of a malfunctioning speedometer to ensure safe driving, legal compliance, and the longevity of your vehicle.

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2021 Chevrolet Silverado 1500 Speedometer Issues | RepairPal