05 chevy classic malibu do brakes need to be bled

dont mess with your bleeders period. if you are changing your pads just remove the reservoir cap on the master cylinder compress the pistons on the calipers and replace the pads. the only time you ever need to bleed brakes is if you had to remove a hose or a brake line, caliper ect. as long as you havnt opened any bleeders or removed any hoses or lines there is no need to bleed the brakes. especially dont mess with the bleeders on the a.b.s. pump or you will have a royal mess. once you are done with your brake job dont forget to pump your brake pedal several times to get your pedal back up or you could crash through your garage.

Unless something happened to get air into the system, bleeding the brakes is not required and is not part of a normal brake job. You are correct in that when you compress the caliper piston it will displace fluid, but it will simply push it back into the master cylinder reservoir. The only thing you need to watch is that it doesn't overflow, as brake fluid is corrosive and can quickly damage a car's paint. If it looks like it will overflow, simply you a siphon or syringe to remove some of the fluid.
Here is a link to step by step directions with pictures.

You do not have to bleed them at all. Remove the cap off the master cylinder and you can then compress the caliber to remove the old pads and install new ones. No need to belled unless you replace the master cylinder or a caliber.