I hear a rubbing sound on the right front wheel. It reminds me of a brake shoe dragging on drum brakes. Found small 3/4 round shavings of aluminum on the whell just below the rotor.

It might not be seated correctly (if a shoe is only touching the drum at one end see if you can get the shoe to seat itself away from the end that's touching) The brake cylinder could be keeping the shoes spread apart slightly too (try bleeding the brake cylinder and applying the brakes hard a few times) There also could be a small variation in how the shoes are manufactured. If it's only binding enough to resist rotating the drum by hand it will bed in over time.

Sounds like you adjusted the brake shoes too far out and they are dragging (rubbing) on the inside of the drum. Back off the adjustments; the wheel should turn freely and stop only when you just begin to apply the brakes. The other thing that could be wrong is that the emergency brake is engaged; release the emergency brake.

Sounds like you have bad brake shoes, and either the wear sensor is dragging or the shoe rivets are cutting in to the drum. I would pull down and inspect. Also check your axle bearing while there. Remember if this side is worn so is the other side

try adjusting the rear brake shoes but.....spin the rear wheels first is u get the feeling of the shoes grabbing then releasing ( the tire gets loose then tight as u rotate it) u will need to have the drums cut on a brake lathe or replaced...when u have this done , then adjust the rear shoes until u get a slight drag on the rear wheels..go pump the brake pedal to seat the shoes if the wheel spins free adjust the shoes more an repeat until they have a slight drag after pumping the brake pedal

your brakes need to be changed, be careful driving the car

The only manual adjustment for the parking brake on these is at the shoes themselves. Procedure for that is as follows:

1) Place parking brake lever in "full released" position.
2) Raise and support vehicle.
3) Remove plug in parking brake shoe support to access adjuster star-wheel.
NOTE: Through the access hole, rotate the adjuster wheel in the following direction to expand the shoes outward against the drum.
Left brake--Rotate star wheel toward rear of vehicle.
Right brake--Rotate star wheel toward front of vehicle.
4)Using an appropriate tool, turn adjuster star wheel until wheel will not rotate (dead lock).
5) Back off adjuster six detents (teeth).
6) Rotate wheel, checking for light drag. If drag is too heavy, continue to back of adjuster one detent at a time until light drag is present. Do not back off star-wheel more than 17 detents from wheel lock.
7) Install access plug.
8) Adjust opposite wheel parking brake shoes using same method.
9) Lower Vehicle.
10) Apply and release parking brake lever once to ensure proper operation of parking brakes.

These directions are directly from 2006 Pacifica factory service manual. If you have any other problems feel free to ask. v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;}
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no do not touch the cable thats cowboy stuff ,remove the drum and then grind the lip out on the edge of the drum ,then adjust the auto adjusters up manually so drum just slips on and you can hear the brakes rubbing ,perfect. then do the other side ,when you finish the handbrake shouldnt move more than 3 clicks and the footbrake will be nice and firm .Then its off after dark to the local industrial estate and take on the boy racers with handbrake turns ,drifting is out as its front wheel drive

My advise is to adjust the rear brakes. The drum should not move in a side to side fashion. adjusting the brakes will also more than likely take care of that anti lock brake light also. adjust the brakes up to where the rear wheel will spin but you should be able to hear the brake show dragging slightly on the drum.

Get your brakes checked by whoever done them.

Brakes shouldn't having catching sounds, I would remove the drums and check for any foreign items. New brakes you would sometimes hear a rubbing sound, but nothing sharp and catching as such.

Check: shoes for foreign bits, even small amounts of gravel etc,
Inside of drums for damage.
Shoe springs are all attached and connected to the right places.
Cylinders are not loose.

This should solve your problem.