Some GMC Yukon XL owners report experiencing persistent electrical issues that cause the vehicle to shut off while driving and sensor malfunctions. These problems may stem from electrical system malfunctions, such as a faulty alternator or wiring issues, which can lead to unexpected engine shutdowns. Additionally, some owners have identified transmission problems that can also trigger engine shutdowns, particularly when the vehicle is in gear. The most common cause of these shutdowns is an electrical issue, including a faulty alternator, battery, or loose wiring connections. To address these concerns, owners are advised to check the alternator and battery for proper functioning, inspect wiring connections for looseness, and have the transmission examined by a qualified mechanic. If issues persist, seeking a professional diagnosis from a certified mechanic or dealership is recommended to ensure thorough troubleshooting and repair of the electrical and sensor-related problems.
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