The blower motor for my 2005 Suburban suddenly

you will need to replace the blower motor as it has probably siezed going by the squealing noise you say you heard.i`m assuming this has more than 3 speeds for the fan motor.if it wasn`t working on one speed then you probably have a bad blower motor resistor that will need to be replaced as well so you will have all fan speeds.this is located in the air duct housing near the blower motor and will have about 6 wires on it.some of these on under the hood on the firewall anywhere from the passenger side to the center of the firewall.not sure about the vent switch.if the vent switch is moving the doors and you hear a clicking then you may have a vent door problem that the door pivot is worn.

The motor has sealed bearings. You need a motor but probably not the squirrel cage. The switch repair was to get the fan working and warranty wouldn't cover the fan.

For similar issues always check the fuse first. Check if all speed are gone. It also could be the resistor that is connected between the switch and the blower. It cold also be loose wiring. You may need to inspect the said parts which is found behind the glove compartment.

if the motor hasnt been running for a long time it will squeel. my father has a k1500 truck the same year and to change the motor you need to remove the glove box

check fuses for blower, then if good check switch for power then check blower motor for power. run a power jumper to blower motor and make sure blower works

Sounds like there is a issue with the front blower motor I would check your fuses first because sometimes the motor jumps in voltage causing the fuse to blow. Check your user manual for location also if that is not it and the motor is getting power it could also be the switch that controls the blower motor.

It uses the same fuse as the front heater blower. There is a ballist resister to allow for the different speeds of the motor that can fail and the blower motor is well known to fail too. Sometimes thers a fuse right in the wire thatr's connected to the blower motor it'self.

Check for BLOWER RELAY Problem if RELAY is Good the BLOWER MOTOR is BAD

Heater blower motor resister is bad, replace, located under dash above heater motor.

It sounds like your blower motor may be bad. I don't know if you know how to check power at your blower motor plug, but you can use a volt/ohm meter or a test light. If you have power (12VDC) , your motor is most likely bad. There is also a resistor block module which has 2 resistors on it. It controls the motor speed basically by restricting the power by directing it thru one of the resistors. The higher the resistance, the slower the motor turns, thus the 3 speeds for the motor. The resistor module is mounted on the blower housing and has 2 screws holding it in with a small plug connected. It is just about straight ahead of the passengers left knee.
You can get used motors from a junk yard pretty cheap.
Good luck