Ok, I found it on my truck. I have a 2002 2.3L 4x2. I am having the same problem. Mine is stuck in the cold position. It is behind the engine about 4-6 inches down and a B@!#H to get to. I think it takes metric because I have standard wrenches and I could not get it off to replace it. I hope this helps.

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2002 2.3L Standard trans, short bed 4x2