The GM6 automatic transmission is a fully automatic 6-speed automatic transmission for back-wheel / all-wheel drive with electronic control.
Essentially, the GM6 automatic transmission consists of the following components.
There are two various types of emergency running mode:
Hydraulic emergency running mode
In the event of failure of an electrical component, the transmission can switch into the hydraulic emergency running mode. In this case, all the solenoid valves are switched off and the transmission shifts, if the 1st, 2nd or 3rd gear is engaged, permanently into 3rd gear. If the 4th, 5th or 6th gear is engaged in the event of failure of the electrical equipment, the transmission shifts permanently into 5th gear. When the transmission is operating in the emergency running mode, 5th gear is engaged and the ignition is switched of and on again, the transmission shifts to 3rd gear.
Electrical emergency running mode
If a gripping clutch does not correctly engage or the releasing clutch does not correctly disengage, the transmission control can switch into the emergency running mode. The transmission works in the restricted mode. Defective clutches are not used. This means that only a limited number of gears is available
For transmission adaptation, the following work must be carried out:
After replacement of the entire transmission, the service function does not have to be run, as the transmission is already fully adapted on delivery.
The service function can be found at the following path:
Service functions/Drive/Transmission control/Calibrations/Transmission adaptation.