01-23-2012, 01:23 PM
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#1
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Powered by LX9
Join Date: Mar 2010
Location: fox vally wi
Posts: 1,429
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trans question
I'm looking to change the trans soon. Its starting to slip, I'm looking at a gagt trans. Question is will I run into any issues?
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-23-2012, 01:28 PM
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#2
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15.65 @ 87.3 MPH
Join Date: Nov 2009
Location: Sarnia, Ontario
Posts: 1,189
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As far as I can see, your PCM needs to be adjusted for the change in gear ratio. Also I remember reading that 03+ 4T45E trannies were upgraded with stronger internals for reliablity or something of that matter.
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Hit a dear! Back to stock 3400... For now
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01-23-2012, 02:04 PM
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#3
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How do I adjust it
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-23-2012, 02:21 PM
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#4
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GLS member
Join Date: Nov 2007
Location: Indiana
Posts: 3,201
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Tuning software like hptuners
I have a gagt tranny in my car's nd the tranny shop did it
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01-23-2012, 03:42 PM
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#5
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GLS member
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
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Have you tried changing the fluid and filter on your existing transmission?
Have you tried a fluid conditioner?
Is the transmission fluid pressure adjustable on these things?
How many miles are on this transmission?
I have over 206,500 miles on a vintage 1995 Ford Escort automatic transmission, and that's in Baltimore - Washington DC traffic too.
Last edited by zzyzzx : 01-23-2012 at 03:46 PM.
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01-23-2012, 06:05 PM
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#6
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Honestly I'm after the different final drive ratio
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-23-2012, 06:15 PM
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#7
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15.65 @ 87.3 MPH
Join Date: Nov 2009
Location: Sarnia, Ontario
Posts: 1,189
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Quote:
Originally Posted by jawa
Honestly I'm after the different final drive ratio
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Have you driven a GAGT to see the difference? I'd start there first to see it it's really worth the trouble.
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Hit a dear! Back to stock 3400... For now
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01-23-2012, 11:10 PM
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#8
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Well in found a low mileage lx9. For 200. And I'm looking to put the gagt trans up to that moter
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-23-2012, 11:11 PM
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#9
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GX Member
Join Date: Jan 2011
Location: maryland
Posts: 181
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GAGT ratio is 3.29
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01-24-2012, 09:39 AM
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#10
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Powered by LX9
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Location: fox vally wi
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Quote:
Originally Posted by zzyzzx
I have over 206,500 miles on a vintage 1995 Ford Escort automatic transmission, and that's in Baltimore - Washington DC traffic too.
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No offence but this is a Oldsmobile were talking about here on a Oldsmobile alero forum, the alero is nothing like the escort that you make reference to quite frequently on this board, they are compleatly different cars, yea the escort is a fine car, so just because it gets better mileage out of some parts because of its lighter weight doesn't make it a good comparison vehical to a heavy alero. Just my input,
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-24-2012, 09:42 AM
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#11
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Quote:
Originally Posted by Shiwnath
As far as I can see, your PCM needs to be adjusted for the change in gear ratio. Also I remember reading that 03+ 4T45E trannies were upgraded with stronger internals for reliablity or something of that matter.
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I wonder if I grab the gagt pcm if it would work on the alero
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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01-24-2012, 09:56 AM
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#12
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15.65 @ 87.3 MPH
Join Date: Nov 2009
Location: Sarnia, Ontario
Posts: 1,189
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Quote:
Originally Posted by jawa
I wonder if I grab the gagt pcm if it would work on the alero
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Not really no... Your PCM has your VIN flashed into it as well so, your car wont really like having a PCM with a VIN other than your own. To be honest your better off getting it reflashed anyways because then you can also fine tune your car and quite possibly gain a bit of HP in the process.
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Hit a dear! Back to stock 3400... For now
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01-24-2012, 11:17 AM
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#13
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i speed up for corners
Join Date: Apr 2009
Location: Dover,NH
Posts: 3,489
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pm reddog he has a GT tranny in his alero i am pretty sure.
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Alero is gone but not forgotten
1999 black gls coupe R.I.P 130k
1999 auburn mist metallic gls sedan R.I.P
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01-24-2012, 11:23 AM
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#14
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Powered by LX9
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Quote:
Originally Posted by xXManwhoreXx
Tuning software like hptuners
I have a gagt tranny in my car's nd the tranny shop did it
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How did you get your trans to work, any noticeable difference?
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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02-22-2012, 12:59 PM
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#15
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GL Member
Join Date: Nov 2003
Location: Weaverville, NC
Posts: 398
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When is it slipping? Mine is slipping from a dead stop if I even slightly accelerate hard. I think it is the front tranny mount that has bit it and may be the cause. At least that is what the tranny guy said.
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02-22-2012, 01:14 PM
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#16
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GLS member
Join Date: Jun 2011
Location: Canada
Posts: 1,319
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There really is so little difference between the two that I would just put another 40 in it... just my 2 cnts. I had the 40 in my se and a 45 in the 00. Comparing the tables, there is really not that much difference.
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02-22-2012, 07:21 PM
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#17
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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Quote:
Originally Posted by JLw7123
pm reddog he has a GT tranny in his alero i am pretty sure.
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HAHA No, not yet, but I do plan on putting one in later.
With HPTuners, you can change the gear ratio in about 2 seconds. All the drive gears are the same it's just the FDR.
The nice part about the 4T45 tranny is that they are still using it today! It's used in the New Malibu, the G6, and a few other cars. I know it's also in the G6 4 cyl and the Cobalt with a 3.90 FDR. There is also a 3.61 ratio too.
Fuller has a 3.42 in his car and it's a bit much for a stock engine. He has the next cam up from what I'm putting in. His I believe is a custom job though.
For what I'm doing the 3.29 is a perfect fit. The 3.61 which is next, is too much for my taste 
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2000 Olds Alero 3400 SFI 14.53 @ 94.93
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02-24-2012, 08:17 AM
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#18
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GL Member
Join Date: Jan 2011
Location: michigan
Posts: 414
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^ so if newer cars are still using the same transmissions, could we swap in a brand new/slightly used one? are they backwards compatible?
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02-24-2012, 10:25 AM
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#19
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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^^ That was my point
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33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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02-24-2012, 10:59 AM
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#20
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GL Member
Join Date: Jan 2011
Location: michigan
Posts: 414
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right. i was just wondering if they'd be PERFECTLY compatible since they upgrade over the years. then again i'm just dumb xD
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