4L80/85E Transmissions. 6L90 Transmission | Diesel Place

Info: Sticky GM 4L80E/4L60E Reference Material, Manuals, FAQ's/Parts List. (Updated November 2018)

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ATTENTION Sticky Your input needed for building FAQ's for tranny

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by Diaric

Info: Sticky 4L80E Conversion - Older Truck

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Info: Sticky The most common problem facing the 4L80-E NO OVERDRIVE and how to deal with it.

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by GenBiltstein

Info: Sticky Leaving electrical and going into Hydraulic. Repeated DTCs?

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by GenBiltstein

ATTENTION Sticky First posters new to 4L80-E/ 4l85-E Transmission forum? Read before posting.

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by GenBiltstein

Question: 4L85e high TC slip speeds

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311

by MLars

Question: 4L80 no overdrive or 4th. Rebuilt trans.

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546

by richardht1948

4l80e giving me grief...

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778

Question: Dipstick for 6L90/MYD 6 spd used in the gas 6.6

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639

4l80e not shifting out of 1st

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774

Question: Rebuild kit

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807

Question: Limp mode insanity

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590

Question: 80LE trans

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858

Question: 1986 M1031 from TH400 to 4L80

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637

4l80e needs high rpm to move

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1K

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54

2K

No Overdrive No codes

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727

Intermittent loss of overdrive. NO DTC,S. WTF

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by DeerCreekFarm

1996 4l80e, fresh rebuild, no reverse

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9K

stuck direct drum on 1995 4l80

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4L80e 2nd gear only

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Question: 1994 K2500 SUBURBAN 4th gear like braking

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645

93 g30 limp mode?

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2K

Attention to previous post

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711

by Bob54

4L80E no codes, no reverse, all forward gears great!

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111K

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1K

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926

Question: Filling Transmission cooler after radiator removal

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997

Question: Shifter/ cable issue

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by DieselBurban99

4L80E Limp mode, Trans fuse blowing, unable to clear DTCs 81, 82, 83

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9K

Question: 94y GMC SUBURBAN 4L80E 2nd gear no engine brake

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Losing TCC Lockup

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953

4L80E limp mode

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3K

Tranny Code cross reference... someone please answer -I'm going nuts!

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by GHOST

1995 K2500 6.5 4L80E to NV4500 swap in progress questions

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2K

Question: 6L90e upgrade in a '96 K2500?

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2K

Question: Going on and out of limp mode

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1K

Question: 4L80e transmission from Humvee?

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2K

by kingofthirdrock

Trying to fix Code 81/82 in my 94 Chevy 3500

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Question: TransGo HD2 Install

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by mbost