Can you ID a 6L80E/6L90E?
09-27-2011, 06:27 PM
#1
Can you ID a 6L80E/6L90E? I picked up a 6L90E? used. Seller said he was parting out a wrecked 09 Silverado 1500 crew cab. The trans has a build sticker on it, anyone know how to decode it? I didn't get to see the truck, so I just want to verify what I have. I know its a 6LX0E, just want to confirm year and model
09-28-2011, 09:00 PM
#7
I believe the 6L90 has 34 spline instead of the 32 in the 6L80
AWD/4WD Transmission-bellhousing to end of output shaft (bellhousing to end of case)
4L70: 26.875" (22.25")
6L80: 27.125" [+.250"] (23.3")
6L90: 28.625" [+1.750"] (24.7")
4L80: 29" [2.125"] (26")
AWD/4WD Transmission-bellhousing to end of output shaft (bellhousing to end of case)
4L70: 26.875" (22.25")
6L80: 27.125" [+.250"] (23.3")
6L90: 28.625" [+1.750"] (24.7")
4L80: 29" [2.125"] (26")
Last edited by philntx; 09-28-2011 at 09:17 PM.
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09-29-2011, 09:58 AM
#11
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8CAA is an 08 MY 6L80e 2wd Since this is my second post here, I don't know how performabuilt trans or the other trans shop poster feels about posting a link to another trans site, but PATC has some pricey 6L80 and 90 parts for strengthening the trans. There is also a custom built 6 speed auto I just heard of that I can research if you want. Real pricey and doesn't have the 4.027 first, though. The MYC or MYD is usually only found on the option sticker, and that is on the original truck.
If you can get the last eight of the vin, I can tell you a little more info on the truck if it helps, but all you need is really right there. The VIN can be pulled up by any GM dealer since that is the only vehicle with that number, with only one other possibility, as you may also need the first three for positive ID.
8= model year
CA= model code
A= Automatic or Manual
If you can get the last eight of the vin, I can tell you a little more info on the truck if it helps, but all you need is really right there. The VIN can be pulled up by any GM dealer since that is the only vehicle with that number, with only one other possibility, as you may also need the first three for positive ID.
8= model year
CA= model code
A= Automatic or Manual
Last edited by Brian68; 09-29-2011 at 10:06 AM. Reason: Added information.
09-29-2011, 10:32 AM
#13
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I work at a dealer, for the moment. That is just experience with the model code, if I got a code I didn't know I would be looking for awhile....
The trans is really generic as they sit on the shelf at the factory and other than 80's or 90's, there is no way to tell or for that matter even care about where it came from, as they are all the same. the software is where the difference is made when programming for each application. The TCM will need to be programmed somehow with a VIN so it doesn't default the shifts and be a nasty child in operation.
This is mostly why I joined this forum, 'cause I want to build and install a LS1 in my 93 truck, and would really like to get a 80 or 90 behind it. I don't have a whole lot of performance experience in me so....
The trans is really generic as they sit on the shelf at the factory and other than 80's or 90's, there is no way to tell or for that matter even care about where it came from, as they are all the same. the software is where the difference is made when programming for each application. The TCM will need to be programmed somehow with a VIN so it doesn't default the shifts and be a nasty child in operation.
This is mostly why I joined this forum, 'cause I want to build and install a LS1 in my 93 truck, and would really like to get a 80 or 90 behind it. I don't have a whole lot of performance experience in me so....
09-29-2011, 11:57 PM
#16
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Here is the full VIN, 2GTEC638881149578, It is what you said only an 08, with the Denali package, and had an L92 eng and 3.42 rear.
I can do some research as to the model code breakdown when I get off of vacation next week. I know the CA is an 80 2wd and an 8CKA or 8CJA would be a 4wd, just don't know why yet.
HTH
I can do some research as to the model code breakdown when I get off of vacation next week. I know the CA is an 80 2wd and an 8CKA or 8CJA would be a 4wd, just don't know why yet.
HTH
09-30-2011, 11:42 AM
#18
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April 19/10 it had 65,950 miles, at Keating Chev in Crosby TX. It had a rear extension 0-ring seal put on at 51,304 10/19/09 in Modesto CA.
I wouldn't worry much about the trans, the most common problems on those are leaking 3-5-R seals on the back of the pump cover and bad welds (leaking) at the 3-5-R housing. That has a symptom of delayed reverse or wierd 3 or 5 shifts, usually just cold. They also use viton check ***** that wear quickly on one or more positions, but I have not seen much else common, and not a ton of those 3 either. The pump cover now has a second design for 09 and up units that is a service fix for 07-08 models that uses better seal design.
There is a 6L80 conversion thread right now I am learning a boatload from, this might calm the nervousness for you?
I wouldn't worry much about the trans, the most common problems on those are leaking 3-5-R seals on the back of the pump cover and bad welds (leaking) at the 3-5-R housing. That has a symptom of delayed reverse or wierd 3 or 5 shifts, usually just cold. They also use viton check ***** that wear quickly on one or more positions, but I have not seen much else common, and not a ton of those 3 either. The pump cover now has a second design for 09 and up units that is a service fix for 07-08 models that uses better seal design.
There is a 6L80 conversion thread right now I am learning a boatload from, this might calm the nervousness for you?
09-30-2011, 02:09 PM
#20
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This one https://ls1tech.com/forums/conversio...0e-swap-2.html
Or I can save you time and just go here http://www.pacificp.com/forum/viewto...216c3ea8add063
Or I can save you time and just go here http://www.pacificp.com/forum/viewto...216c3ea8add063
