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Old November 29th, 2011, 07:13 PM   #1
magauto
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Default 1997 awd astro trans in 1999 4x4 gmc jimmy

I have a 1997 astro trans and wanting to put it in a 1999 4x4 jimmy, have reseached and have found both people saying yes and no about shifting proper... Has anyone done this or know anything about it?
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Old November 29th, 2011, 07:27 PM   #2
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swap the solenoids to be safe (don't cook the ecu), then you should be all set. shift points can be handled in the valve body and ecu.
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Old November 29th, 2011, 07:56 PM   #3
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Default re1997 awd astro trans in 1999 4x4 gmc jimmy

shift soleniods are the same, part numbers match from one to the other.
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Old November 29th, 2011, 07:59 PM   #4
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use your s-dime converter, iirc they have a little bit higher stall converter than the full size trucks (maybe vans too).
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Old November 29th, 2011, 08:22 PM   #5
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Ok thanks for input i was just looking in that, also the jimmy lost reverse so that means trans needs tatol rebuild????
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Old November 29th, 2011, 09:54 PM   #6
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Quote:
Originally Posted by deerebowtie View Post
use your s-dime converter, iirc they have a little bit higher stall converter than the full size trucks (maybe vans too).
No please
You cant clean the burnt tranny material out of your old convertor,so why would you put that junk in your new trans? Buy new or run the convertor that comes in the working trans,unless you like doing s10 trans swaps.I dont,they suck to work on.
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Old November 29th, 2011, 10:00 PM   #7
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Ok thanks for input i was just looking in that, also the jimmy lost reverse so that means trans needs tatol rebuild????
Most likely depending on miles.It could be worn reverse clutch,a broken hard part,or a cracked case,all comon on the 4l60e.
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Old November 29th, 2011, 10:10 PM   #8
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i don't run automatics in wheelers bdd, didn't think of what you said. my mistake. what bdd said.

now with that in mind, will boiling the converter in water for a while clean out the clutch material? or a sonic parts washer? are they safe to stick a pressure washer in with say a 30 degree tip?
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Old November 29th, 2011, 10:22 PM   #9
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so have found some info on blazer forum that says 96-97 only????? and and on another forum says 97 and newer! idont like you working on s10 so dont want to do it more than once lol
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Old December 10th, 2011, 09:41 AM   #10
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so i changed it, works just fine having 97 astro awd trans in a 1999 4x4 gmc jimmy thanks for all the input guys
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