Method and control device for control of an automated manual transmission gearbox

Method (400) and control device (115) for control of an Automated Manual Transmission, AMT, gearbox (113) in a vehicle (100). The gearbox (113) comprises a split gearbox (210) and a main gearbox (220), and is especially arranged for shifting with zero shift technology. The method (400) comprises detection (401) of a shift request; placement (402) of the split gearbox (210) in a neutral position; engagement (403) of the requested main gear (220) with zero shift technology, and shifting (406) to the requested split gear (210).