GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

GMT900s who swapped to a 4l80....

Thread Tools
 
Search this Thread
 
Old Sep 22, 2016 | 07:00 AM
  #1  
Three6GMC's Avatar
Thread Starter
TECH Addict
15 Year Member
Loved
Liked
iTrader: (11)
 
Joined: Mar 2010
Posts: 2,165
Likes: 27
From: Corpus Christi
Default GMT900s who swapped to a 4l80....

Got a question for the guys who swapped to a 4l80, did you guys have any issues with the factory shifter cable on a 4l80? I went from a 6l80 to a 4l80 and my shifter won't hit 2nd or 1st gear. Seems like the shift lever on the trans is too long causing too much throw between park an 1st or my cable is just too short. I moved the cable bracket further back and now it wont reach park. The ones with original 4l60 trucks was your cable able to work on the 80e? My guess is it does and my only option to keeping a stock shifter right now is to swap to a 4 speed shifter cable and lever and get rid of my 6 speed shifter.
Reply
Old Sep 22, 2016 | 07:54 AM
  #2  
shupe's Avatar
TECH Regular
iTrader: (7)
 
Joined: Feb 2005
Posts: 401
Likes: 2
From: NW Arkansas
Default

60e- 85e here. Stock shifter cable was fine. I will say its a little less positive in the gates on the stalk.
Reply
Old Sep 22, 2016 | 11:10 AM
  #3  
Three6GMC's Avatar
Thread Starter
TECH Addict
15 Year Member
Loved
Liked
iTrader: (11)
 
Joined: Mar 2010
Posts: 2,165
Likes: 27
From: Corpus Christi
Default

Ok that's what I figured... I'll order up the 4 speed shifter and cable and go from there. Thanks.
Reply
Old Sep 22, 2016 | 08:48 PM
  #4  
RS/SS 4.8's Avatar
10 Second Truck Club
iTrader: (13)
 
Joined: Jul 2012
Posts: 1,258
Likes: 5
From: San Antonio Tx
Default

Yea the 6Ls have PRNDM and the 60/80s have PRND321 so the cable is too short on the 6Ls for the 80e
Reply
Old Sep 22, 2016 | 09:19 PM
  #5  
Three6GMC's Avatar
Thread Starter
TECH Addict
15 Year Member
Loved
Liked
iTrader: (11)
 
Joined: Mar 2010
Posts: 2,165
Likes: 27
From: Corpus Christi
Default

yep... gonna have to order the whole shifter actuator on the steering column and cable to do it right.
Reply
Old Sep 22, 2016 | 09:29 PM
  #6  
JordanH's Avatar
Restricted
iTrader: (16)
 
Joined: Feb 2015
Posts: 714
Likes: 1
From: El Paso, Texas
Default

It's actually two pieces... The cable is self adjusting, and if you look inbetween the crane and body right where the drivers door is, you can see where they seperate. You may be able to get away with just swapping out the one part of the cable?

Or just try the self adjusting sequence? It may work.....
Reply
Old Sep 22, 2016 | 09:56 PM
  #7  
Three6GMC's Avatar
Thread Starter
TECH Addict
15 Year Member
Loved
Liked
iTrader: (11)
 
Joined: Mar 2010
Posts: 2,165
Likes: 27
From: Corpus Christi
Default

self adjusting sequence? Never heard of that..


Just ordered part# 20787606 and 22833055. Thats the 4 speed shifter actuator and cable. Didn't show two different parts for the shifter cable, all one piece from what I can tell unless I just ordered the second piece your talking about.





Reply
Old Sep 23, 2016 | 01:06 AM
  #8  
Wolftrk99's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Jun 2013
Posts: 5,492
Likes: 48
From: Virginia Beach,VA
Default

The actuators are the same (at least they were in my 08) and my 4l60 cable works just fine with the 6l80. There are an upper and lower cable, as far as i could tell the only really differebce was the length of the boot on the lower section. Havent looked into any of the early nnbs hd trucks with a 4l80. Probably just need to adjust the cable, as mentioned its under the driver door, pull the white or yellow colored collar up and squeeze the two ends together and let them go and it will self adjust. Other thing you can do is to release the lock and go from 1st to park 10 times and it is supposed to adjust!! Ive always had better luck with the first method though!!!
Reply
Old Sep 23, 2016 | 02:53 PM
  #9  
JordanH's Avatar
Restricted
iTrader: (16)
 
Joined: Feb 2015
Posts: 714
Likes: 1
From: El Paso, Texas
Default

[QUOTE=Three6GMC;5379598]self adjusting sequence? Never heard of that..



Here's the self adjusting sequence. It's really easy to do, and I'm pretty sure all the gmt800 and gmt900 are like this. Not sure of other year models? The shift cable is actually two cables... In the first pic you posted, that's the trans side of the cable. The cable splits into two at the self adjusting part, but you don't want to take it completely apart for the adjustment of it, only if you're replacing that portion of the cable.

How To Adjust Trans Shif Cable - Ask the GM Technician - GM-Trucks.com

Last edited by JordanH; Sep 23, 2016 at 02:59 PM.
Reply
Old Sep 24, 2016 | 09:32 AM
  #10  
musclecity85's Avatar
TECH Apprentice
iTrader: (5)
 
Joined: Feb 2009
Posts: 350
Likes: 5
From: columbia SC
Default

whatever you do make sure you buy the cable from GM..i bought one from the parts store and after a day of messing with it i couldnt get it right..bought one from the dealer installed it no issues at all
Reply



All times are GMT -5. The time now is 06:55 PM.