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  1. OEM Issues
    Hey everyone. I have a 06 Trailblazer ls ext with around 79000 miles on it, and I was driving around the other day and the heat and air conditioning switch stopped working (0-5). I tried playing around with what numbers it will work on and it has only worked on 0, 1, and 2. Before this problem...
    air conditioning problems heater fan heater/ac
  2. General
    I have a 05 Envoy. I have been having problems with the heater, and now it has seem to move to more of the electrical in the truck. In the last week and a half I have had to use a battery charger twice to start the truck. Once I do that and give my dad a ride to work the battery will stay...
    battery electrical problems heater fan heater/ac ignition
  3. General
    2002 Trailblazer. Speeds 1,2,3 do not work on heater fan blower. High positions 4 and 5 work fine. Switch, blower motor, something else...? Thanks!
    blower heater fan switch
  4. General
    I have a 2003 Trailblazer with automatic climate controls. Most of the time it work ok, but once in a while, it will 1. No fan (any speed) or 2. No Air or 3. No heat Doesn't seem to go with any pattern, It just start screwing up.. Then all of the sudden it starts working normal again...
    air conditioner automatic climate control heater heater fan
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