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#1
11-28-2005, 08:42 AM
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01 Impala fan only works on #5 setting, 1 thru 4 don't work...
Unfortunately I have had some water behind my firewall due to a clogged drain. This probably has loaded up and may be damaged the fan. Good news, the drain plug is no longer clogged. Bad news, my fan only works on #5. Any ideas? Possible fuse? May be it will work after drying out.?
Thanks. Keith 
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#2
11-28-2005, 06:12 PM
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Re: 01 Impala fan only works on #5 setting, 1 thru 4 don't work...
If you have a manual HVAC system, it's classic blower motor resistor. Water leaking in through bad cowling seal, etc. will drip down onto the blower motor, blower motor resistor and wiring. Positions 1 - 4 from the HVAC head unit feeds to the resistor matrix to vary the blower motor speed. In position 5 the resistor is bypassed and the blower motor is fed direct battery power via the HVAC HI speed relay so the blower itself is probably OK.
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#3
11-28-2005, 07:19 PM
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Re: 01 Impala fan only works on #5 setting, 1 thru 4 don't work...
had the same thing in my 2000 last year...bnaylor3400 is 100% dead on
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