2009 GWM STEED 2.8 p/u d/c diesel

2009 GWM STEED 2.8 TDi DUBBEL CUB Diesel - yes vechile in my name since 2012 - Mechanical damage, heat guide gave trouble bakkie overhead. Need new pistons. Fault on vehicle Mechanical issues Immobilizer ( sentral locking) does not work. Have to lock open with keys. Door behind driver seat does not open. The things inside we took out when it broke so he is closed and can't open. Over the 300 000 km on the clock. Speedo don't work either. VRYBURG North West