4l60e gone again.... what to do on rebuild options

[91kenny1]

Ive searched endlessly on this transmission. My 03 Silverado 1500 2wd. Thinking of rebuilding it myself with upgrades. Lost my 2nd and 4th gears while heading out camping. Transmission has 30K on a rebuild from a local trans shop. Warranty is up on Friday, what a coincidence! 2yrs unlimited mileage. Do I allow this shop to make it right, assuming they will rebuild/fix my failing transmission? Do I attempt my own rebuild? I have another shop in mind but the money spent there could be the money building me a nice solid unit on my own.