battery. key circuit, or solenoid.
if your talking about a v6 noise on start up. most all 3.1 make this noise until engine gets warm. if the noise does not go away when warmed up. better check it out !
if its a low knocking noise it is normal on the 3.1 engine!! if it is loud check to make sure the valves are getting oil!! I have a 2000 Malibu v6 and it is the same way.
wrong plugs or wrong gap!
how to replace actuator on a 2000 malibu
on 3.1--14.3 gallons--2000 Malibu
what is the tire size for a 2000 Chevy Malibu ls
Where is the ecm located in a 2000 Chevy Malibu
yea
p0412 on a 2000 Malibu is secondary air injection system valve A malfunction-
if it is not making any noise,or leaking from bottom of pump. Releif hole is on bottom of pump,if leaking replace pump.
stater or silanoid
map sensor 2000 malibu location