Will be installing new PCM. Yes, have doubled checked that it is the problem. Have ordered the replacement pre-programmed from a reputable source. The questions on installation: 1) Should I disconnect the battery before removal and installation? 2) Do the 2 plugs just unplug or are they locked on somehow? ( I don't want to break anything by forcing them off). 3) Should I wipe out/clean the inside of those plugs before re-plugging into new PCM? 4. ) Do I need to unplug the seperate TCM ( it's not being changed) before I do anything with the PCM. This is a 2007 with the 2.2 Thank You.

 

Yes disconnect the battery, clean and apply dielectric grease to the connectors , there are locking pins in the connectors.

 

Thank you.

 

Ignore any directions about resetting the key security, that comes from the same people that think you can program a fob by doing a funny dance.

You will need to get the crankshaft sensor relearned, even if you don't get a CEL for it.