On my gl 3.0 1995 tarus the rear end makes aloud squeaking nosies off and on ..i change rear brakes the other day and it still makes the nosies

What type of noise ? Squeaking, grinding, popping etc. .

If only the pads were changed then you can't expect much

Proper brake service requires hours of rust removal,lubing
certain places & parts,new or machined rotor,fluid flush and
much more.

No reason at all for brakes to squeak except poor & sloppy
work

99% of that comes from the pros

Those who work on there own cars eventually learn the
proper way to do things & resolve problems

I don't know your situation or where the work was done or
by whom

You could have rusted & frozen caliper pistons from never
changing brake fluid every 2 years or bad flex hose holding
pressure on pads.

The rear brakes last a long time since 80% of braking is on the front wheels. This helps keep the car in a straight line in hard braking where the front wheel lock up. The rear wheels keep rolling to keep the car in a straight line much like a fin on a rocket keep its path straight through the air. If you have never changed the rear brakes then it is time to check it. The squeak is caused by a device mounted is such a way so that it touches the brake disk when the pad wears to a certain point. Letting you know it is time for a new pad.

either the brakes need cleaned or replaced or the wheel beraring depending on when it squeaks it could just be condensation if it squeaks first thing in the morning or after sitting all day at work then it is condensation but if not then have the brakes checked

Getting the levers loose is a start but the shoes may have gotten hot and "glazed". Have him replace the shoes, use a good quality name brand and not the cheapest you can find shoes, and it should be OK.

changing brake pads on F250 2006

check u-joints, pionion bearing,and all bearing and bushings may need greasing also check rear brakes may cause squeeking

It is the belt tensioner pulley.
The bearings are worn out. Quite easy and cheap to replace

I have had MB vehicles for 10 years now and the brakes ALWAYS squeak. I feel like any time after 10k miles, expect it. I live in west LA and there are hundreds of MBs here. They all squeak. Sad but true.