Do you have any pick n pulls in your area?
If so, go grab one for a few hours work and a few hundred bucks.
I'd not advise anyone to do this unless they planned on going though the unit. They are invariably bad or on their last legs.
If you purchase a good used trans from a salvage yard over the counter with a warranty you'll have a higher likelihood of it lasting a decent amount of time. Pick and pulls usually last a few months at most and 4L60Es typically run between $175-$250 w/a 30 day warranty vs $300-$500 otc w/a six month warranty from a salvage yard.
It looks like my transmission on my 97 2 Door Tahoe K1500 is on the way out, got some pretty bad sounds coming from it now. No slipping, but based on the suddenness of the noise, from my research it sounds like the sun shell is cracked. Any suggestions for a shop in the Miami area? I'm leaning toward a reman, but not sure who to go with. The truck is basically all stock, and I do some occasional towing with it. Truck has 250k miles on it, although the engine was replaced at 200k by the previous owner.
Look for some local shops with good reviews and call them up. Ask them exactly what they do with the transmission (parts installed, procedures performed, etc).
At min, they all should come with:
- full cal kit (paper/rubber/frictions/bonded steel-rubber apply pistons/band/filter)
- 3-4 steels (others if need be)
- all bushings replaced
- new input sprag
- new heat treated sun shell
- sonnax LB 4l60e boost valve
- new accumulator pistons
- sonnax wide rear sun gear bushing
- all new oem/rostra harness and solenoids
- torque converter
- pump vanes/rotor guide
Procedures:
- resurface pump castings w/pump body rotor/guide pocket remachined
- reverse input drum remachined or replaced with new one
- fwd drum pressure tested for leaks at the base of the input shaft
- front end play set between .015-.025