2001 Silverado 2500HD heater switch?

[zieg85]

My truck doesn't have factory AC as it is just a plain work truck.  I have a 6 position switch off then 1-5.  My blower works on 4 and 5 only.  I am thinking it is the fan resistor but usually just the highest position works.  Am I on the right track or should I be looking to replace the fan switch.

[zieg85]

Just a blower relay I take it???  I don't see the resistor like our truck have.

[VileZambonie]

Yes there is a resistor and it is most likely your issue. See #5

[zieg85]

Thanks Vile!!!  I will locate it and check it out.  Looks to be under the dash passenger side

[Irish_Alley]

know on my 02 ive had issues with the resistors and the connector. but unlike you i have 1-4 and Hi doesnt work unless i wiggle the connection. but the resistors are a known issue and will overheat

[zieg85]

know on my 02 ive had issues with the resistors and the connector. but unlike you i have 1-4 and Hi doesnt work unless i wiggle the connection. but the resistors are a known issue and will overheat

my luck I will have a burnt up plug it...  On a positive note I snagged a very nice topper today.

[Irish_Alley]

well at least you have that going for you lol

[zieg85]

Thanks Vile!!!  I will locate it and check it out.  Looks to be under the dash passenger side

$29+ later I have all speeds now.  Thanks Vile!!!