In GSC I believe there was a penalty for auto gearchange but not for auto clutch, it's probably the same for GSC2012 but we can no longer see the hdv file.
Heres the one from gsc2011(from F3 car):
[AIDPENALTIES]
TC=(0.00,0.010,0.020)
ABS=(0.000,0.010,0.020)
Stability=(0.000,0.010,0.020)
Autoshift=(0.00,0.005,0.005,0.010)
Steering=(0.000,0.010,0.015,0.020)
Braking=(0.005,0.010,0.015)
Invulnerable=(0.00,0.00)
Opposite=(0.00,0.010)
SpinRecovery=(0.00,0.005)
AutoPit=(0.00,0.005)
AutoLift=(0.00,0.000)
AutoBlip=(0.00,0.000)