OK, you got me, I might have to look that one up. I'm just a basic mech when it comes to these things. I would think that if you unplug the solenoid at the transmission and the symptoms go away, you have found the problem. But then again this can be misleading because you don't know for sure if it's a bad solenoid, dirt in the valve body or a bad signal from the ECM. (If that's where it gets it's signal from.) Is it tied to the brake switch as well? Did you already checked for voltage at the switch and solenoid? I'm just thinking out loud here. Let me know if I get warm, never worked on one of these.
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