Product Details

Updated style external wiring harness pigtail fix kit for the GM 4L80E and 4L85E automatic transmission.

• Part brand: Rostra Powertrain
• Part number: 350-0033
• Transmission models: 4L80E, 4L85E
• Covered makes: GM, GMC, Chevrolet, Hummer
• Year range: 1991-2009
• Instructions included: Yes
• Alternate part numbers: 12154288, 41756BDR, 33859VC, 3445EK, 3445K, 34986

The 4L80E and its variants were in production from 1991-2010 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

The 4L80E and 4L85E transmissions were found in the following GM labels and other brands; Chevrolet, GMC, Hummer H1, Isuzu NPR.

These transmissions can be found in the following vehicles; however, you should double check your application with the 17-bolt pan count.  It is common for similar vehicles to have multiple transmission options available from the factory.

• Avalanche 3/4 ton 2002-2006
• Hummer H1 1991-2005
• Isuzu NPR gas engine 1990-2007
• Motor Homes 1995-2005
• Sierra Pickup 1991-2010
• Silverado Pickup 1991-2010
• 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 external wire harness pigtail kit fits the following years: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010.