2009 Montana stalling issue

[jayman]

Hello I recently bought a 2009 Montana it now has a stalling issue. It will normally start fine but will only run for a minute or 2 then stalls. When you turn the key off and back on theres no power to the fuel pump or starter afrer a few minutes it will start again but will again stall after a minute or 2. I replaced the throttle position sensor today but no change. Any advice would be appreciated thsnks in advance

 

[jayman]

 

[jayman]

Showing these 2 codes says 4 codes but just shows these 2 twice

 

[melsg5]

Check the battery connections and check the connections at the PCM.

OBD-II Trouble Code: P0601 Internal Control Module Memory Check Sum Error

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[jayman]

Ok thanks for the reply I will try that tomorrow cheers