Checking the Transmission Breather
The breather is located at the top left-rear of the transmission main housing. The breather prevents air pressure buildup within the transmission.
Transmission housing breathers must remain unobstructed. A plugged breather could result in pressure build-up, which could cause oil leakage.
If the breather is plugged, clean or replace it. Check more often if the vehicle is operating under very dusty conditions.
Caution: When cleaning the transmission, do not spray steam, water, or cleaning solution directly at the breather. Spraying steam, water, or cleaning solution directly at the breather can force the water or cleaning solution into the transmission and contaminate the transmission fluid.