Problem with My 2004 Chevy Malibu classic 2.2L.
My girlfriends car just started acting funny last week. It died
on her a couple times, then would take several tries to get it
start up. Eventually we couldn't get it to start at all.
checked all the
fuses etc. So I decided to replace the pump
and filter. After that it started up and ran. When she got
home it wouldn't restart again! I also should add that the
theft light is blinking, and the door locks occasionally lock
and unlock by them selves.

This also applies to 1999, 2000, 2001, 2002, 2003 years.
A common problem is
the ignition cylinder and/or the ignition switch. With the
buzzing of the relay, i would say all this may be related to
the ignition switch. A low voltage supply to any of the
circuits that the switch feeds will give strange
conditions. If going to replace the ignition switch, then also
do the cylinder at the same time. With all things described,
sure sounds like the ignition switch.
P.S. The locks may be related to the ignition switch
problem or not at all.
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