blower motor makes noise on 2001 Suzuki Grand Vitara

Blower motor makes noise when fan is on for Air conditioner, blower motor works normal when heat is on. Tell me how to repair this.

Asked by for the 2001 Suzuki Grand Vitara
Something is caught in the fan. Blower motor is behind right side of dash, my labor guide says it takes just over an hour to remove, clean and refit. There is a company that independent auto repair shops buy their information from that the same information inexpensively to do it yourselfers. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
Autozone have some popular workshop manuals for free on line once you register (for free) on their website
and get an online repair manual subscription.