i got a 92 s-10 tahoe 2.8 v6 5speed. anyways here is my problem. i start up my truck. first gear fine. switch to second and i hear a noise and all the sudden my truck sound like a semi. really loud kinda like when its really hot out and the a/c is runnin. but its always doing it now in every gear. i need to know if it is my fan. if someone could help i would love to hear from you. peace.