2009 Nissan Altima Hybrid brakes squeak

my question is when i press the breaks it gives a squeaking i went to the mechanic and he told me its the abs pump i changed it and it still makes the same noise what do i need to do to get rid of the noise.

Find another mechanic.

Tester

Where is the squeaking coming from? Front vs rear? Right vs left? Wheels vs elsewhere?

ABS pumps don’t squeak. Agree with @Tester.

Does this noise occur while the vehicle is parked and you apply the brake? Hydraulic brake actuators can make some strange noises, this is sometimes caused by a small amount of air in the brake lines.