Here's some great information for those of you that own a motorhome or may need to tow a vehicle with an Automatic transmission.
When you tow your rear-wheel drive car, van, pickup or SUV, the drive shaft to the rear axle must be disconnected to prevent damage to the automatic transmission. This requires mechanical service under the car which is not convenient for RV towing. REMCO's Drive Shaft Coupling was developed to provide a quick and easy means of disconnecting the transmission while sitting in the driver's seat. The coupling (mechanical clutch) is installed into the rear portion of the vehicle's drive shaft, near the rear axle.
When disconnected, the rear axle is free to turn without turning the drive shaft or transmission. The coupling has a control cable attached to it which extends to a location under the driver's seat. This control cable is pulled out to disengage for towing and pushed in to engage for driving the car.
Let REMCO Remco Towing custom build a new replacement drive shaft with coupling for you. Prices start at $649.00. Call 1-800-228-2481 for details on application.
Here's both the installation and the driveshaft measurement PDF's.