Question about 2004 Chevrolet TrailBlazer

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I have a 2004 trailblazer LS and when I turn the air on the whole car shuts down. To my knowledge I have not changed or added the freon in my car. What do you think the problem is? and cost?

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Sounds like the a/c unit has seized up and when clutch is engaged is stalling the engine

Posted on Jul 07, 2010

  • rlisiak Jul 07, 2010

    is it the compressor? or can I add Freon and see if it kick back on?

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Adding r134a will not help, once the bearings wear out it is time to replace the pump

Posted on Aug 01, 2010

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2004 chevy trailblazer electrical problems


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I have a 2004 Trailblazer and my rear a/c starts out blowing cold air but gets warm shortly after but the front a/c keeps blowing cold air all the time???? what could cause that ????


Just a little low on freon can make it get too cold and it freezs if you in position to check the freon level you'll find with the system on high and the engine reved up the low pressure is below 25PSI. fill it to reved up is above 25 and your problem will go away. Low on freon will make it cold enough to frezze up and then warm up as the air does'nt go though the ice. it'll work good as you start up till it frezzes and after it's stopped up with ice it blows warm (it's really too cold). the more freon in the system the warmer it'll all blow because all the pressures are higher and it's the difference in pressures that make it cold.

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How difficult is it to replace the blower motor resistor on my 2004 Chevy Trailblazer LS - is it behind the glove compartment or do I have to get into the dash?


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Aug 01, 2010 | 2004 Chevrolet TrailBlazer

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My air conditioning keeps shutting down. I know I


maybe your freon is low if it is you know becuase the compressor will come on and very sune after it will kick out. if not and the compressor is running for a long time before breaks but its still not cold the compressor is weak.

Jul 29, 2010 | 2003 Chevrolet TrailBlazer

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When idling(ie at red light), the ac was on high


Sounds as if the A/C Compressor has issues with the clutch/shaft locking up.... the blow off you heard was probably the pressure relief valve allowing an over charge of freon escape the system....however if the A/C system has a compressor problem or a clog that condition will also happen....can you have someone put a set of high/low gauges on it just for safety sake to be sure it is not developing too high of a head pressure...that would be my recoomendation....if the compressor locks up the belt can be thrown off causing your vehicle to require a tow/repair on the spot.

May 06, 2010 | 2004 Chevrolet TrailBlazer

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2001 Isuzu Rodeo LS after adding Freon A.C runs warm and cold


It sounds like by adding refrigerant to the system it may be over pressurizing. When this happens it will cycle on and off.

You will need to hook up a set of manifold gauges and monitor the high and low pressures to see what is happening.

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I have a 2004 Chevy Trailblazer LS with strange noise.....


If it is making a noise in the belt area, have them check the water pump. These get loose water pump bearings that cause belt noise.

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too much freon is the same as not enough freon

Have an 04 mazda6 as well, AC seems to be the cars weakness. It takes 15-20 minutes till my car is ina driveable condition (Phoenix, AZ)

Take it in for a tune up, but I doubt the AC will be any better

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