If by motor you mean the engine. If the car is running and it's not making much noise turn in the a/c in the car and if the noise gets worse I would replace your air conditioning pp
The bearings are out of it. Replace Blower motor.
Could be your steering fluid is low? My 1982 GMC pickup truck makes a noise when my steering wheel fluid gets low.
try checking fluid level
Your joints are releasing the synovial fluid and makes a cracking noise.
Probably the heater blower motor.
Change the fluid in the power steering unit it will most likely fix the problom.The fluid in this p/s pump gets thick because of the tube that runs in front of the motor and heats up the fluid causing it to loose it's viscosity.
mine needed power steering fluid
Your transmission fluid might be low.
the car may be low on power steering fluid
Check the GEO Trackers transmission fluid. The fluid could be low, or the fluid could show metal parts indicating a transmission problem causing the noise.
The screeching noise is most likely the blower motor. Either the motor itself is bad or the fan blades are striking the housing. Run the heat without defrost and see if the noise is the same. Also check at different fan speeds to see if the noise changes.
It could be low on power steering fluid. That is a common problem. It makes a sharp whining noise when you turn the steering wheel.