Truck is a 93. I just took the truck up the street to get gas and my trans is shifting through the gears way to quick. I just drove the truck home from work a few hours before and trans was fine. Oh and my volt meter is not working now either. It's like it has no power to the gauge. Any ideas?

 

Check for blown fuse.

 

Error code scans. Check connections on the tranny & integrity of the wires to the connections.

 

Probem is fixed. It was a blown fuse. It's amazing how a blown fuse could cause the tranny to shift like that. Thanks