Almost anything can do it, on my f150 I had a whistle, turned out to be my magnetic mount ham radio antenna, only needed to move it a few inches to stop it. I thought it was up front from the sound, good luck finding it.
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Almost not an SOB
Artic Fox 3018 5th Wheel - on order
Grand Design 2800BH TT 2021
Prior TT 2017 Flagstaff 831CLBSS Classic Ultra lite - SOLD 5/21
TV 2024 F350 DRW - on order
TV 2017 F150 6.5' bed 3.5 Eco-boost Max tow 1800lbs payload
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