My 2007 pt cruiser will not shift into overdrive? overheating when it wants to

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Milage is98000 the child safety locks are turning on by there self.I was in an ancient nationwide took it to there garage said it starting this was not due to accident they refused to have it tookto have the Chrysler store said it's I could fix the Chrysler store body .ir take a check and fix it my self that's the only problem one person looked at it where it was my first accident wasn't my fault I trusted them now my cars going crazie heres some codes p0731, p0562, p0750, p0846, p0882 p0755 p0760