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- - AC/Heater fan high speed (https://67-72chevytrucks.com/vboard/showthread.php?t=810159)

CJ2A	08-05-2020 01:20 AM

AC/Heater fan high speed

1995 K2500 and the AC/heater fan high speed does not work. I got a new switch for $260 and resistor for $15 on amazon and still no high speed fan. Anyone have issues like this ? Wiring harness hiding a bad wire ?

Just curious if this is a common issue ?

Tom	08-05-2020 07:10 PM

Re: AC/Heater fan high speed

Fan only switch is like $40.
Full speed is direct power. Anything less runs threw a resistor to lessen power going to fan. I'd assume the fan is going bad at this point.

speedygonzales

08-09-2020 09:34 AM

Easy to test the motor

Apply battery voltage straight to the motor with jumpers to test if you get high speed or not.

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