Guys loosing will to live with strange problem .....

now .... closing tailgate shuts then pings back up like it doesn’t wanna stay shut . I need to shut it 4-5 times before actually stays shut . I’ve changed tailgate lock and tailgate handle for brand new parts still problem persists . Looked under trim all wiring looks fine ..... anybody experienced similar issue ? 

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Edited 9 January, 20197 yr by FlyingSpanner