hi i just got a probe and it says code 55, does anyone know what this is , i have a 1994 gt v6 5 speed

Both of these links show all the codes.

http://homepage.ntlworld.com/dorothy.bradbury/probemx/index.htm

http://forums.probetalk.com/showthread.php?t=54044

55 is Vehicle Speed Sensor VSS

Controles speedo, probably ABS and airbags as well.

If you arn't having any drivability issues I'd follow the procedure to reset your CEL memory (just unhook your battery overnight) and see if the CEL comes back.

Brice