Thank You for writing into AskPatty!!
To address your concern, a "squealing" noise may be coming from one of your drive belts. This may be an A/C belt or power steering belt. I would have your belt inspected for wear and cracks, many times it may just require a bit of "belt dressing" to condition the belt and quite the sound. That would be a low cost solution, IF that was the only problem.
Hope This Helps!!
A. J. Valle
〉 Answered on Feb 27th, 2012 by Amanda J. Pierce, MBA "AJ", Certified Mechanic, Project Coordinator; Primavera Scheduler at VIGOR Alaska Industrial Shipyard & BizzM3ch Solutions
The squealing noise may be coming from your blower motor, which is located on the passenger side, dash. The shaft & bearing inside the motor may be dry and intermittently causing the noise. At my shop we would replace the blower motor, however I found a link that explains about it and how you could attempt to lube it, may or may not work.....
http://redhouseon7th.com/redhouse/howto/1999BuickBlowerReplacment/bearing1.html motor housing
To find out how much replacement of the blower motor would be - check the Repair Price Estimator on my website www.larsonsservice.com - Hope this helps:)
Have a Fun Day!
〉 Answered on Feb 27th, 2012 by Diane Larson, Owner/Manager at Larson's Service