Chevrolet Malibu Forums banner

1 - 5 of 5 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
i have a 2005 malibu 3.5 automatic. I changed the motor in it and made sure all wire were hooked up however i used the PCM from the new motor instead of the original. Now the problem is The obd2 port wont comunicate and the fuel pump doesnt run when turning on the key. All fuses looked good however just wondering if the PCM is the problem due to its not the original?
 

·
Registered
Joined
·
67 Posts
Was the engine from another ‘05 Malibu?
I know later engines are different and the PCM from the 3.5 Pontiac G6 wont work either, same engine different electronics.

Did you do a key relearn for the new PCM?
Did you try the old PCM?

This is a bit over my head, hopefully you get this figured out.
 

·
Registered
Joined
·
3 Posts
Discussion Starter #3
yes motor and PCM was from another 05 malibu. the car will start and run if i spray starting fluid in it just that fuel pump isnt running and OBD wont comuunicate.Going to check voltage to fuel pump and make for sure pump isnt bad but with all the different modules in it didnt know if it was a computer problem Thanks for you reply anything helps
 
1 - 5 of 5 Posts
Top