hi friends recently I changed my engine for my g35 2007 because there was rattling sound from engine; after changing the engine it drove for 10 to 12 days after that one day I was planning to go out with my family all off sudden all those three lights came and in each gear the transmission slips in every gear . I don't know what's wrong with it. kindly help me to find the solution friends.

 

is there a check engine light? get those codes read and post them here.

 

Sounds like a case of 'The loose ground wire'