IDENTIFICATION
Note. For testing and diagnostic procedures of electronic components, see AUTO TRANS DIAGNOSIS - 4T60-E - 1995 article or AUTO TRANS DIAGNOSIS - 4T60-E - 1996 article.
All transaxles have a metal identification plate attached to the rear face of transaxle case. (Scheme 23)
| Body | Model |
|---|---|
| A | Century, Cutlass Ciera & Cutlass Cruiser |
| C | Ninety Eight & Park Avenue |
| G | Riviera |
| H | Bonneville, Eighty Eight & LeSabre |
| K | DeVille |
| L | Beretta & Corsica |
| N | Achieva, Grand Am & Skylark |
| U | Lumina APV, Silhouette & Trans Sport |
| W | Cutlass Supreme, Grand Prix, Lumina & Regal |
BODY CODE DESIGNATIONS (1995-96 PASSENGER CARS & VANS)
Scheme 23
DESCRIPTION
Hydra-Matic 4T60-E transaxle is a fully automatic 4-speed unit consisting primarily of a 3-element hydraulic torque converter and converter clutch. Transaxle uses a variable capacity vane-type oil pump to supply all hydraulic pressure needed for operation.
Multiplied torque from torque converter is transferred to transaxle by a sprocket and drive link chain assembly. Other internal components consist of 4 multiple-disc clutches, a roller clutch, a sprag clutch, 3 bands and a compound planetary gear set. Final drive gear and differential assemblies are an integral part of transaxle.
Transaxle uses 2 electronic shift solenoids, controlled by the Powertrain Control Module (PCM), to switch hydraulic pressure on or off. Another electronic solenoid controls Torque Converter Clutch (TCC) lock-up. Some models also use a Pulse Width Modulated (PWM) solenoid to control rate of TCC apply.