Vauxhall Opel Vectra C Signum 1.9 CDTi Automatic Gearbox Control ECU Unit part number 55 559 861 IN WORKING ORDER PLZ CHECK TO MAKE SURE YOURS IS FAULTY AND NOT TO BUY JUST TO TEST THIS ONE TO SEE ECU ONLY THIS MAY NEED TO BE PROGRAMED TO YOUR CAR FOR THIS TO WORK This ECU as not been tech 2 cleared and MAY need to be reset, unlocked and coded to your vehicle by a qualified auto electrician using correct software and equipment