90 jeep cherokee auto trans
 

My jeep slips out of gear while i am driving.I just got it out of the
shop.They changed the filter and oil in the trans.The old filter was not
pluged & the oil was not burnt.I also have a factory alarm that goes off
when I shot off rhe engine.(I disconnect the batt. when I park)I think the
two are the same problem,When I go over any kind of bump the tranny slips
and the alarm dash light goes off. Is there any kind of sensor or wires
that may trigger this kind of problems.
Please help a dying jeep..............