Transmission Description

The 4R70W is a transmission with the following features:

• Wide ratio gears
• Four speeds
• Rear wheel drive
• Automatic
• Electronic shift
• Torque converter clutch control
• Line pressure controls

The transmission uses a Ravigneaux-style double-pinion compound gearset to produce four forward speeds and reverse. Two bands, two one-way roller clutches and four friction clutches are used to hold or drive various planetary gearset members.

4R70W Transmission

All vehicles are equipped with a vehicle certification label, affixed to the LH (driver's) side door lock post.

Refer to the code in the space marked TR on the vehicle certification label for proper transmission identification.