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Old 09-10-2012, 12:36 PM
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What would have to be changed to use Buick tranny in Suburban

Found 96 Buick Roadmaster 4L60E, low miles, cheap from friend. Want to put it in 96 C-1500 Suburban. What are the differences that would need to be changed out, etc. Some are telling me it will work, and I believe them. But, Interchange books don't show it as the same. Thanks for responses.

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Old 09-10-2012, 05:13 PM
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4L60E is an electronic controlled trans. What did you intend to use for a controll unit?
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Old 09-10-2012, 05:39 PM
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I'll be hooking it up the the electronics in the Suburban. My suburban now has a 4L60e, which is messing up; and I can get the Buick (same year as sub) very reasonable, and I've been told by some it should just fit right in...but since it is not listed in the interchange as a compatible transmission, I just wonder what, if anything, has to be dealt with.
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Old 09-11-2012, 10:30 AM
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Internal wiring harness, etc.. inside pan may be different but, you could probably swap that from the Suburban Trans.
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Old 09-11-2012, 11:08 AM
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Buick trans.......

Not sure about your buick trans,BUT,the older B.O.P. trans had a different bell housing pattern,maybe you you can use an adapter plate.
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Old 09-11-2012, 12:15 PM
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The bell housings are the same, as far as I can tell. On some swap guides I have noticed the trucks will fit the cars, so that means the bell housing will fit. The wiring inside is one of those things I'll need to check, but I'll be taking the pan off both anyway, so that won't be a problem. Thanks for the heads up on that. I'm not sure the solenoids are the same, or the wiring plug, or the cooler line hookups...but I think all that can be swapped. I'm assuming the torque converters will be a bit different, and so not sure if I should use the one from the sub or the one on the Buick.
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Old 09-11-2012, 12:48 PM
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contact tci,they might be able to help.They offer a 6 spd for street with a computer
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Old 09-14-2012, 11:01 PM
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Its not that complicated.... bolt it in, plug it in, drive it. There were some OBD2 changes in 96, but the tranny is the same. As long as it plugs in, everything will be kosher.
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Old 09-15-2012, 08:52 AM
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Quote:
Originally Posted by curtis73 View Post
Its not that complicated.... bolt it in, plug it in, drive it. There were some OBD2 changes in 96, but the tranny is the same. As long as it plugs in, everything will be kosher.
X2 I would probably look into a remanned torque converter or at least have yours cut open and rebuilt. Fresh fluid and new filter and make sure the valve bodies and solenoids look similar. flush the trans cooler and lines, Then run it.
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Old 09-18-2012, 11:13 AM
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Some external changes noted so far

Just picked up the Buick transmission and have noticed the tail shaft housing will have to be changed. I'm assuming the wires on the back that come off it for the speed sensor (??) on the driver's side, and which come off my Suburban trans on the passenger side, will require the swap because they look totally different even though the wires might reach around and plug in (not sure about that, even). Also noticed the Buick transmission does not have the black control box on the driver's side that my Sub has, and has a metal U shaped piece bolted to a shaft which will probably have to come off so the black box off the sub trans can be bolted on. I don't have the Sub trans out yet, so may notice some other externals that are a bit different, but I have been told by 2 transmission repair shops these will interchange (eventually). Just posting this to help anyone who might search for the same kind of info since I have had no luck on the forums getting a definitive answer.
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