04 auto gto trans
02-16-2015, 01:26 PM
#2
Moderator
An '04 trans does not have an Input Speed Sensor (ISS).
By '07 all (or nearly all) 4L60E has ISS and the PCM expects it.
That makes '06 a transition year where the sportier (Vette and GTO) models and later-in-the-year models are likely to have ISS.
CORRECTION: All (or nearly all) '06 have ISS and '05 is a transition year, where some models have it and some do not.
Do have the old trans? If yes, a picture of the inside electrical connector would tell us as ISS will have 2 extra pins.
Or do you have the model number of the PCM?
By '07 all (or nearly all) 4L60E has ISS and the PCM expects it.
That makes '06 a transition year where the sportier (Vette and GTO) models and later-in-the-year models are likely to have ISS.
CORRECTION: All (or nearly all) '06 have ISS and '05 is a transition year, where some models have it and some do not.
Do have the old trans? If yes, a picture of the inside electrical connector would tell us as ISS will have 2 extra pins.
Or do you have the model number of the PCM?
Last edited by mrvedit; 02-16-2015 at 07:10 PM.
02-16-2015, 07:09 PM
#3
Moderator
Looking over my notes from talking to a sponsor, it appears that all '06 have the ISS and '05 was the transition year with some models having ISS and some not.
Therefore, you need to determine if your PCM expects ISS as the '04 trans will not have it. I don't know how difficult it is to disable ISS in a newer PCM.
Therefore, you need to determine if your PCM expects ISS as the '04 trans will not have it. I don't know how difficult it is to disable ISS in a newer PCM.
02-17-2015, 08:36 PM
#4
Teching In
Thread Starter
Join Date: Nov 2014
Location: iowa
Posts: 41
Likes: 0
Received 0 Likes
on
0 Posts
yeah its a e40 pcm out of 05/06 gto and I think t42 tcm I talked to a place that said they could make it work we will c ive looked and looked and nobody has said they can remove the iss
02-17-2015, 10:35 PM
#5
Moderator
I'm leaning in the direction that the E40 doesn't use the ISS. For one bit of evidence I found this thread:
https://forum.efilive.com/archive/in...p/t-12226.html
In which someone says "GTO's dont run ISS".
In that case you can use a 4L60E, a 4L65E or the 4L70E which does have the ISS.
Note that '08 and later and quite different and do not work with any pre '08 PCM.
https://forum.efilive.com/archive/in...p/t-12226.html
In which someone says "GTO's dont run ISS".
In that case you can use a 4L60E, a 4L65E or the 4L70E which does have the ISS.
Note that '08 and later and quite different and do not work with any pre '08 PCM.
02-18-2015, 05:05 PM
#7
Moderator
Just make sure it really is what they say - the bell housing should have a bolt hole in the 12 O'Clock position.
Trending Topics
02-18-2015, 05:16 PM
#9
Moderator
If bolted to an LS1 it should be fine.
Forgot - worst case you would also need a new internal wiring harness - another $75 and 1/2H labor to install. But I don't think your PCM is an ISS unit.
Forgot - worst case you would also need a new internal wiring harness - another $75 and 1/2H labor to install. But I don't think your PCM is an ISS unit.
02-20-2015, 10:08 AM
#10
I'm pretty sure the sensor is only in TBSS 4L70Es. 05/06 GTO used a 4L65E and 04 used the 4L60E with the only difference between the 60/65 being the internal upgrades. Control logic should be the same.
Keep in mind GTOs were oddball cars that didn't always correlate with other GM offerings. Example, 2006 ALL GM autos were filled with Dexron VI but they still used the 2004 dipstick with the "Dexron III" engraving on it. All 04-06 GTOs used the E40 ECM. The 2004s had TCM functions controlled by the ECM, the 05/06s had a separate TCM. All GTOs got a factory deep pan. Other 4L60E cars did not. Other 2006 GM offerings that stayed with the 4 speed auto may have upgraded to ISS, but the 2006 GTO was pure 2005 carry over. Especially since it was it's planned last year and was a dying fish. Hence, it did not receive the 6L80E.
Fairly certain the trans will plug and play.
Keep in mind GTOs were oddball cars that didn't always correlate with other GM offerings. Example, 2006 ALL GM autos were filled with Dexron VI but they still used the 2004 dipstick with the "Dexron III" engraving on it. All 04-06 GTOs used the E40 ECM. The 2004s had TCM functions controlled by the ECM, the 05/06s had a separate TCM. All GTOs got a factory deep pan. Other 4L60E cars did not. Other 2006 GM offerings that stayed with the 4 speed auto may have upgraded to ISS, but the 2006 GTO was pure 2005 carry over. Especially since it was it's planned last year and was a dying fish. Hence, it did not receive the 6L80E.
Fairly certain the trans will plug and play.
Last edited by CoolAid; 02-20-2015 at 10:14 AM.