Wiper blades don't return to home position

To make room for my annual garage party last fall, I parked my 2002 GM Envoy on the street. After cleaning the garage the next morning I hopped in the Envoy to move it back into the garage. It was raining softly so I needed to use the wipers. Rather than returning to their home position at the bottom of the stroke, the wipers instead stopped at about 30 degrees – kinda right in my line of sight. I pushed the wipers down, but the rest position has not reset back to the correct spot. 1. Do I need to replace my wiper motor? 2. Why would a night outside have made the wipers forget their proper rest position?

The most common thing I would suspect is the wiper arm linkage is loose and has moved from its normal position on the motor. I especially would lean toward that if you were able to move the arms down by hand. The second most common thing I would suspect is the motor itself. If all the nuts and bolts are tight, you really shouldn’t be able to move the arms down by hand.

Thanks. I’ll check the linkage.

Your original post said the wipers would not park normally. I take this to mean BOTH stopped half way on the windshield.

BTW, its not wise to manually park the wipers, damage will/can result.

Try this: If the wipers at the position they are in when the switch is turned off (fail to park),disconnect the multi-function switch electrical connector. (Under drivers side dash close to firewall and steering column)

If the wipers now park, replace the multi-function switch.

If the wipers still don’t park, check the wiring from the wiper motor to the switch for a short circuit.
If the circuits are good, replace the wiper motor.

If replacing the wiper motor follow the proper procedure: when installing the crank arm on the wiper motor shaft maintain a gap of 5/32 to 5/16 inch(4 to 8mm) between the V-notch in the crank arm and the tab. DO NOT rotate the the wiper shaft.

there should be a control box by the motor in older cars you had to replace the motor the newer cars has chip control