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My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
The first thing that needs to be done is to have the fault codes read out/checked with a fully compatible scan tool or computer plugged into your vehicles data port to see what codes are set.Once this is done any codes set then need diagnosed to then locate and repair the park sensor fault here.I have seen issues with internal control unit failure for the park sensor control unit itself needing replaced as well as wiring damage to the sensors can cause this issue.As for the tail gate window issue here this can be a fault with the window control switch stuck on or shorted needing replaced.
Both of these will have to be checked into and tested further first having the fault codes read out then diagnosed to then locate and repair the faults here.
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