Question about 2005 Chevrolet Trailblazer Ext

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I have 2005 chevy trailblazer heater wont work,

I have 2005 chevy trailblazer LT V8 heater wont work, and car overheats when turning the heat or AC on. Could it be a broken fan belt?

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  • carhob May 11, 2010

    did you check coolant level?

  • Anonymous Mar 17, 2014

    no heat 2005 chevy trailblazer

  • Anonymous Mar 24, 2014

    can a 2008 chevy 4.2 engine from a trailblazer be replaced with a 4.2 from a 2005 trailblazer

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Sounds like your water pump is going out or your thermostat is stuck. Check the thermostat first and make sure it is not frozen in the clsed position.

Posted on May 08, 2009

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2005 motor in a 2008 chevy blazer


Chevrolet TrailBlazer - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Chevrolet_TrailBlazer
WikipediaProduction of the Blazer overlapped with the TrailBlazer until 2005, when the 2-door ...2006-2008 Chevrolet TrailBlazer LT ... The Active Fuel Management system on the V8 engine shuts off 4 of the 8 ... 2003-2005 Chevrolet TrailBlazer EXT.

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1 Answer

No air in front but i have air in rear is there a belt in front ??


Can you hear the front ac/heater fan? They use the same AC compressor so that should be okay. The fan switches fail quite often on those. That controls how much air is pushed by the fan for AC, heat and defrost. The switch is attached to the fan knob on the dash.

Aug 29, 2014 | 2005 Chevrolet Suburban

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2005 chevy trailblazer ac won't work but defrost does while driving only


Hi. There happens to be a common problem with these trailblazers inside the ducting box located under the dashboard. The mode actuator door motor stops working due to a faulty motor itself and the default position is defrost only. As far as the Air Conditioning not working, there maybe another problem to diagnose there. Could be low refrigerant, or electrical problems to the compressor, or faulty fan clutch(another very common problem with these trucks). Type in mode actuator door and 2005 trailblazer in your search engine online i.e. Google or Yahoo and you will find many posts about this problem. I think there may even be a Youtube video about replacing it. Let me know you need more help. Thanks.

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How do I fix a fan in a 2003 trailblazer LT


my 2003 Chevy Trailblazer EXT lt ac works/ but the fan won't go from low to any other setting? any ideas

Jul 07, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Heat/ac fan doesn't work


go to the ac fan resistor first - then check the fan itself (put 12 v), remove climate control and check plug for shortage-melted wires

Jul 25, 2009 | 2005 Chevrolet Trailblazer Ext

1 Answer

2005 chevy trailblazer, fan switch wont work on all speeds


Had the same problem on my 2005 trailblazer I replaced the resister and wire harness because wire harness was burnt on a few connections. Cost was 75 bucks for both parts at Napa auto parts works fine now

May 23, 2009 | 2005 Chevrolet Trailblazer Ext

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