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Rebuild manual for the GM 4L80E and 4L85E automatic transmission.
Product specifics:
- Publisher: ATSG – Automatic Transmission Service Group
- ATSG part number:4L80E
- Book type:Rebuild and overhaul – Techtran manual
- Covered models:4L80, 4L85,4L80E, 4L85E
- Makes:Chevrolet, GMC, Hummer H1, Isuzu NPR, Jaguar, Aston Martin, Bentley, Rolls-Royce
- Year of origin:USA
The blue cover 4L80E ATSG overhaul manual covers procedures and technical service information for transmission inspection, repair, dis-assembly, assembly, diagnosis, and troubleshooting.
This book contains detailed information regarding the following:
- Bushing locations
- Checkball locations
- Clutch clearance specifications
- Electrical volt and ohms information
- Endplay check and recommendations
- Exploded views
- Line pressure check procedures and specs
- Recommendedtools list – Not all required
- Thrust washer locations
- Torque specifications
- Torrington bearing locations
- Transmission model application codes
- Trouble codes and fixes
- Trouble shooting
- Valve body assembly detail for valves and springs
- Much more…
The 4L80E and its variants were in production from 1991-2013 and can be identified by the 17 bolt oil pan and 4 forward gears. Typically, this transmission is found in the heavier duty trucks and vans; mostly the 2500 and 3500 series. It will also be found in the heavy half-ton, such as the 1500HD, SS, or Denali truck with the 6.0L
These transmissions can be found in the following vehicles; however, you should double check your application with the 16 bolt pan count and square shape. It is common for similar vehicles to have multiple transmission options available from the factory.
- Aston Martin DB7 1996-1999
- Avalanche 3/4 ton 2002-2006
- Bentley 1991-2006 (confirm 4-speed with 17 bolt pan)
- Hummer H1 1991-2005
- Isuzu NPR gas engine 1990-2007
- Jaguar XJS, XJS-R, XJ12 1993-1998
- Motor Homes 1995-2005
- Rolls-Royce 1992-2003
- Sierra Pickup 1991-2013
- Silverado Pickup 1991-2013
- Suburban 6.0L 1996-2007
- Tahoe 6.0L, 8.1L 1995-2003
- GMC & Chevy Van 1991-2009
- Yukon XL 6.0L, 8.1L 1995-2003
This transmission is part of the Turbo-Hydramatic series and known by the following codes and model numbers: 4L80E, 4L80-E, MT1, 4L85E, 4L85-E, MN8
This automatic transmission rebuild guide covers the following years: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013.
