Can you say recall notice? Chevy knows about this problem and has extended the warranty through 2016 or 150,000 miles. Just had my 2006 Silverado fixed at dealership @ no cost to me. It takes the shop approximately 45 minutes to correct.
SOURCE: 2006 Chevy Impala - Heater
the blower motor resistor is damaged probably in the process of removing the heater core replace the blower motor resistor, and please dont forget to rate me!!
SOURCE: Blower motor or resistor?
If it was the motor that went out then it would not blow at all. The resistor is the culprit that starts killing off speeds. It should be about $25 to $30 at an aftermarket store like autozone or advanced auto parts.
SOURCE: fan control switch
the blower resistor and pigtail will need to be replaced. good luck ive seen this problem a lot of times mr gm ha ha
SOURCE: Heater/ac switch speeds 1 and 2 don not work in 99 Silverado
you need a resister found under your air duct by the passenger floor under dash board auto zone sells these for about 25.00 you may as well buy cabin air filters while your at it . 1 of the screws will be a pain to install back into the duct work I left mine out didn,t make a difference . you might have to order it as they are a comman item oh you will need a vacuum to clean up mess from cabin air filters .this is not a hard job .
SOURCE: chevy silverado 2500HD won't start after changing fuel filter
Fuel Pump may have took a poo.. ???
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