[carlos5555]

Hello, my friend, I have exactly the same problem as you. After I unload the car from the truck at the dealer, it turn on.

Two weeks ago I fixed the "Ignition switch" and "Key cylinder" problems but now I have this issue.

One technician from the dealer was in my house and regarding his disgnostic I have to chance the fuel pump...I am not sure about this diagnostic, he checked the pump pressure and it was cero.

What I did was full the fuel tank until 3/4, after I loaded the fuel I shaked the car in the rear bomper (To simulate being pulled up on the bed of a truck) and after this the car turn on.

My guess is that maybe the car has a problem with the floatting device in the fuel tank.

When you changed the fuel pump did you changed the floatting device also?

The most interesting situation is that always happens when I leave the car in an angle or when I park in a place that before to park I have to incline a lot the car.

I am serching and trying more stuffs to find the root of this problem, if you find something let me know. I do not want to change the fuel pump until be complitly sure this problems is solved with this change.

One more interseting comment, I thing this problem could be happening also in the Malibu 2001.