Alright guys, my friend has a 2008 Hummer H2. Yesterday he was driving through small puddles and the engine was running perfectly, he parked it in his driveway to find out this morning it won't start. It just cranks over..

Here are the diagnostic codes.

p0606 ECM/PCM processor

P069E definition unavailable

U0109 Lost Communication With Fuel Pump Control Module


I can take a wild guess and say that one of his ground wires is corroded or has a loose connection, if that's the issue.. Where can I locate the grounds for the Fuel Pump Control Module?

Thanks,

- iSki123

 

how you solved P0606 error?I have a similar problem