NHTSA Complaint #538725 — 1994 GMC SUBURBAN

WIPER MOTOR WOULE STOP RANDOMLY AT ANY SPEED, TEMPERATURE, WEATHER CONDITION, BUT LESS LIKELY IN EXTREME COLD. WIPER WOULD STOP DURING A RAIN STORM , ON A NARROW FREEWAY, LATE AT NIGHT. REPLACE MOTOR TO NO AVAIL, AFTER CONSIDERABLE DISSASEMBLE AND RE-BUILDING ATTEMPTS; FOUND IT TO BE A GROUND PROBLEM, A SEPERATE GROUND FROM THE MOTOR HOUSING TO THE VEHICLE BODY. THE RUBBER MOUNTING TO REDUCE THE NOISE AND VIBRATION TO THE PASSENGER INTERFERED WITH THE GROUND. IT WAS RANDOM AND DEPENDED UPON THE MOTION OF THE MOTOR ROCKING ON THE RUBBER FEET TO OPEN OR CLOSE THE CIRCUIT. SOLUTION TO MOVE POSITIVE WAY TO ENSURE THE GROUND IS ALWAYS ESTABLISHED, REGARDLESS OF THE MOTION OF THE MOTOR.