97 Suburban A/C Blower stays on

[Jim Hood]

The blower fan in my 97 Subrban stays on high in all switch positions even in the off position. It will sometimes go off in the high position. I replaced the blower relay but no change. I inspected the wiring at the switch but all looks fine. I don't know if there is a multi-speed resistor between the switch and the relay and don't know where to find it if there is. It appears that the relay never gets any voltage to latch it up which I think takes it off of high speed. Any suggestions? Jim

[keith2004]

hi, i also had the same problem with the a/c i found out the rear a/c controls in the back was messed up and staying on? you may try that and see thanks