4T80E Transmission parts, repair guidelines, problems, manuals
Transmission general data

The 4-speed automatic transmission 4T80E was designed in 1993 together with 4.6 liter engine V8 Northstar for FWD Cadillac models. In 2004, this heavy and high-priced transmission was significantly updated and installed with the same engine on Buicks and Oldsmobiles.
| Number of gears | Transmission Type | Drive | Torque (Nm) | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|---|
| 4 | AT | FWD | 450 | 14,2 | 6,6 | Dexron VI |
Technical issues and repair guidelines
The owner of this rare transmission usually order only a 3-component filter. The overhaul generally consists in the valve body cleaning, the torque converter repair and gaskets replacement.
Which cars run with this gearbox?
| Brand | Model | Year | Type | Engine |
|---|---|---|---|---|
| Buick | LUCERNE | 05-11 | 4 SP FWD | V8 4.6L |
| Cadillac | CONCOURS/SEVILLE | 95 | 4 SP FWD | V8 4.6L |
| Cadillac | DEVILLE/SEVILLE/CONCOURS | 96-05 | 4 SP FWD | V8 4.6L |
| Cadillac | DTS | 05-11 | 4 SP FWD | V8 4.6L |
| Cadillac | ELDORADO | 95-02 | 4 SP FWD | V8 4.6L |
| Cadillac | LIVERY/HEARSE/LIMO | 97-01 | 4 SP FWD | V8 4.6L |
| Oldsmobile | AURORA | 95-03 | 4 SP F/4WD | V8 4.0L |
Instruction manuals and useful links
| Link type | Source | Description |
|---|---|---|
| web | www.at-manuals.com | Sensors 4T80 |
| www.at-manuals.com | Converter Update for GM’s 4T80E | |
| web | www.at-manuals.com | Scheme 4T80e |