A loud buzzing or whining noise when the transmission is in reverse may be caused by the regulator valve in the transmission valve body. A revised regulator valve was released that does not resonate. Careful diagnosis should be performed because other issues can create this same type of noise.
Regulator valve may cause noise when transmission is in reverse on Dodge Dakota
Average mileage: 67,500 (22,000–113,000)
Drive Train affected: 2WD
4 people reported this problem
1996 Dodge Dakota - 2WD 113,000 mi, Visitor
I had noticed for a while this noise when backing up my truck. I have not yet attempted any repair.