Answer
Jul 29, 2025 - 05:20 PM
If your 2017 GMC Acadia’s doors won’t unlock in the rain using the key fob or door handle buttons—but the hatch still works and the doors unlock from the inside—it’s likely a moisture-related electrical issue, possibly involving the door handle sensors or wiring.
Since it happens specifically when it rains, the first place to inspect would be the door handle proximity sensors and door harness connectors, especially in the front doors. Moisture intrusion can cause short circuits or communication issues that prevent the unlock signal from reaching the door actuators.
Check the rubber wiring boots between the door and body for damage or moisture, and look for signs of corrosion at the connectors. It’s also worth scanning the vehicle for body control module (BCM) codes, which could point to the affected circuit. Starting with the driver’s door is smart, since it’s used most and most exposed to weather.
Since it happens specifically when it rains, the first place to inspect would be the door handle proximity sensors and door harness connectors, especially in the front doors. Moisture intrusion can cause short circuits or communication issues that prevent the unlock signal from reaching the door actuators.
Check the rubber wiring boots between the door and body for damage or moisture, and look for signs of corrosion at the connectors. It’s also worth scanning the vehicle for body control module (BCM) codes, which could point to the affected circuit. Starting with the driver’s door is smart, since it’s used most and most exposed to weather.
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