GM 4L80-E transmission
|This article does not cite any references or sources. (December 2009)|
|Body and chassis|
|Class||4-speed longitudinal automatic transmission|
The 4L80-E (and similar 4L85-E) is a series of automatic transmissions from General Motors. Designed for longitudinal engine configurations, the series includes 4 forward gears. It is an evolution of the Turbo-Hydramatic 400, first produced in October, 1963. 4L80-Es have been optioned only in Chevrolet/GMC pickups, vans, and commercial vehicles, and the Hummer H1.
The "MT1" 4L80-E is able to handle engines with up to 800 foot pounds of torque. Final drive ratios include 3.42, 3.73, and 4.10.
- 1991– Chevrolet C/K/Chevrolet Silverado/GMC Sierra V8
- 1991– Chevrolet Suburban/GMC Yukon[disambiguation needed]
- 1995–2003 Chevrolet Tahoe/GMC Yukon[disambiguation needed]
- 1995– Chevrolet Van/Chevrolet Express/GMC Savana
- 2002–2006 Chevrolet Avalanche V8 8.1L
- Hummer H1
- 1992–1998 Rolls-Royce Silver Spirit/Spur II, III, IV
- 1991–1992 Bentley Eight
- 1991–1997 Bentley Turbo R
- 1991–2002 Bentley Continental R/S/T
- 1999–2002 Bentley Arnage Red Label
- 1993–1996 Jaguar XJS
- 1994–1997 Jaguar XJR
- 1993–1997 Jaguar XJ12 / Daimler Double Six
- 1996–1999 Aston Martin DB7
The "MN8" 4L85-E is able to handle vehicles from 7200 to 16,500 lb (3265 – 7483 kg) GVWR with up to 460 ft·lbf (624 N·m) of torque. Final drive ratios include 3.42, 3.73, and 4.10.
- Chevrolet Avalanche
- Chevrolet Suburban
- GMC Yukon XL
- Chevrolet Express with Duramax Diesel
- GMC Savana with Duramax Diesel
Note:These transmissions have issues with early style 12 pin harnesses in which transmission fluid leaks around the harness and shorts the pinouts causing transmission to go into "limp mode" This issue can be easily rectified by simply cleaning the plug.