Re: 1991 Sillverado 5 Speed trans problem
1993 New Venture Gear released the NV3500. Externally the earlier GM units "look like" the NV3500 however internal components were extensively re-designed.
I would look for a NV3500 for a replacemnet out of a newer truck.
Note: All the illustrations in the 1993 service manuals are of a 5LM60, with multiple shift rails, so I don’t know when they switched to using only the NV3500 in production.
I would stay away from anything built before 1991
Remember from the outside these transmissions look alike.
Sorry – I have not saved any identification number information for identifying them.
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