Gas Gauge Wrong After Filling Up? How to Fix Your Fuel Sending Unit

Опубликовано 20 мая 2026, 21:01

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Is your gas gauge reading wrong, stuck, or not moving after filling up your car or truck? A faulty fuel sending unit or fuel level sensor is often the culprit behind an inaccurate fuel gauge, low fuel warning light, or erratic needle. In this video, we'll show you how to diagnose a bad fuel sending unit, test your fuel gauge, and replace the part yourself to save money on costly repair shop visits.

0:00 Gas Gauge Wrong After Filling Up? How to Fix Your Fuel Sending Unit
0:20 What's in a Fuel Pump Assembly?
0:58 The Part That Talks to Your Fuel Gauge
2:00 Several Ways to Replace the Fuel Pump Assembly

This repair was done on a 2017 GMC Yukon XL SLE 5.3L Sport Utility 4-Door Automatic and the process should be similar on the following vehicles:
2015 GMC Yukon XL
2016 GMC Yukon XL
2017 GMC Yukon XL
2018 GMC Yukon XL
2019 GMC Yukon XL
2020 GMC Yukon XL

🔧 List of tools used:
• Flat Blade Screwdriver
• Phillips Head Screwdriver
• Pry Bar 1aau.to/oaPQ-1AXAA00020
• Complete Metric Wrench Set
• Complete Metric Socket Set
• 1/2 Inch Breaker Bar
• Ratchet
• Floor Jack
• Hammer
• Jack Stands
• Wheel Chocks
• Gloves 1aau.to/odL3-1AXSS00048
• Safety Glasses

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⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.