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NO won't work. The wiring harness for the transmission on the 90 model will not hook up to the 97 4L60E transmission. And the ECM / computor on the 90 model will no operate the 97 electronic transmission. You can NOT use anything newer then a 1991
That will be a 700R4 transmission.
If it's a 1/2 ton then it will be a 700R4. 3/4 ton will have a 4L60E.
Yes. Note that this will be a mechanical 4L60, not the electronic 4L60E, which was introduced in 1993.
You would need an electronically controlled engine with an ECM. The 700R4 in the 91 is a mechanically controlled transmission.. the 4L60E in the 95 is an electronically controlled transmission.
Depends on model and engine
I use Mercon Depends on make, model,............
Call your local GM dealer with the seventeen digit vin number and they will be able to tell you. NEW ANSWER: Yours has a 4L60E in it. The 1/2 tons used the 4L60E and the 3/4 tons and up used the 4L80E. They quit using the 700R4 around 1991 ( I think ) The 4L60E and the 4L80E will not interchange due to the wiring harness and ECM / computer.
Possibly. Look at the model # on each transmission. If they are the same, then they are interchangeable.
They've had the manual transmission option always. I believe 1991 was the first model year.
I belive the transmission will take sincromesh fluid found and any gm dealer and your transfer case will take dexatron III fluid.
Yes a lt1 will fit in a 1991, but i believe the motor mounts are a little different for the lt1. You cannot transplant it though without an PCM from an lt1, which needs a 4l60E transmission to control the transmission and engine codes. There are standalone kits available but they cost more than a PCM.