2004 Buick Rainier Q&A
2004 Buick Rainier Question: Miscellaneous
Sounds like your A/C system is putting too much load on your engine or that your engine is not compensating the idle speed for the extra load the A/C Compressor is putting on the engine. I would start with the Engine Performance Diagnostics. best way is to check the codes in the computer to see if you have a sensor/system that is going out, like the Idle Control Motor or Electronic Throttle Body System. - dandd
The CD player in the radio may fail. Our technicians tell us that the radio will need to be removed and sent out to a radio repair shop to correct this condition.