I am new to these forums and have an issue with my 03 GPGT. Recently when turning on the A/C it makes a squealing noise coming from above the front passenger side almost above the glove box. Today, this noise didn't happen and there is no air flow from the A/C. When driving this morning I hit a bump and the A/C came on then turned off again. Does anyone know what this can be caused by and how to fix it? Thanks.