Try calling your local boneyards. If you get one and that's not the problem you'll still probably have to keep it. But it should be a lot cheaper than the dealer. You should check prices against the local Auto Parts stores, and the dealer. Sometimes the dealers prices are better than the part stores. If the prices you find seem extremely high, let me know. I've got a couple of "friends" in the business that give me great deals on used parts...... (Used price is usually about 1/2 of new.)
Or, if it's a 4x4 quad cab with 4:10 gears, and you just want to unload it....... :-)
Good luck, Gary.