How do you retract the break pump to put over breaks on a 2004 Chevy Malibu?

There's no "brake pump" in the sense of a manually retractable pump on a 2004 Chevy Malibu (or any modern car). The brake system uses hydraulic pressure from the master cylinder, which is actuated by the brake pedal. You don't retract anything to work on the brakes.

If you're trying to replace brake pads or rotors, or work on any part of the braking system, you'll need to:

1. Release the brake caliper: This usually involves using a C-clamp or specialized brake caliper tool to compress the caliper piston. This creates the space needed to install new pads. There's no retracting involved, just compressing.

2. Bleed the brakes (possibly): After working on the brake system, especially if you've opened the brake lines, you'll need to bleed the brakes to remove any air that might have entered the system. This involves opening a bleed valve on each caliper while someone else pumps the brake pedal.

If you're having trouble with your brakes, I strongly recommend taking it to a qualified mechanic. Improperly working on your brakes can be extremely dangerous. Misunderstanding brake system components could lead to serious injury or death.