Originally Posted by 98runn'n
I've been having the same problem. Sound like little baby birds chirpin'. The noise is abosutlely annoying. I'm still trying to diagnos what it is. If anyone had the same problem and fixed it, please help.
I have the same problem with my '03 Tacoma. Mine is the blower fan for the heater and A/C. Turn the fan to a different speed and see if the noise changes. I pulled mine out and tried to oil it, but it didn't make a difference. It only does it occasionaly and I haven't been annoyed enough yet to replace it.