Sitting in my truck with the engine and A/C running. I was holding the RPM at about 1000revs. I was in the truck about ten minutes doing this. I was about to shut down when the ck. eng. light reared it's ugly head. I coded it out and heres what I came up with... . P0500,No vehicle speed sensor signal... a vehicle speed signal was not detected. P1596,speed control switch input above maximum voltage..... I drove the truck after and it didn't go away. I have the batteries dis-connected now for about 2 hrs. How long do you think I need to leave dis-connected or does one have to see the #$@% dealer... ... ... Chris

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