Question about 2004 Chevrolet TrailBlazer

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2004 trailblazer is running like **** blower on defrost makes car wanna stall out and lights flicker what could this be

Just changed alternator and it seems to be running really hot but not over heating and radiator fluid was low and filled it but don't know where to find to bleed this on a 2004

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  • blaze31
    blaze31 Jan 13, 2013

    the coolant light or service engine light is not comming on either im so confused on where to start. just dove 10 houses down turned car off and seems really hot and engines seems to be jumping

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  • Chevrolet Master
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You would need to know for sure that the radiator is full and that the serpentine belt is not slipping.
The water pump could have died and that could affect the belt and the alternator.

Posted on Jan 13, 2013

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Posted on Jan 02, 2017

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SOURCE: 2004 trailblazer stalls

Possible Cylinder Mis-Fire...

Take it to Autozone or AdvanceAuto, And have the diagnostic test ran on it.

Posted on Jun 27, 2009

RixsFixes
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SOURCE: how to drain 2001 chevy caviler radiator

Hi

It sounds very much from your description that there is a strong possibility of air being trapped within the cooling system and causing the problem. This will cause the low fluid warning to appear on the car and although the vehicle will appear to be full of fluid - in fact you cannot replace enough fluid because of an air trap in the system.

Most vehicles cooling systems can be bled by removing the cap from the radiator or header tank and then simply allowing the vehicle to tick over for 10 minutes or so. Check and replace the fluid as the air is expelled from the system through the open header tank/radiator.

This may well resolve the problem without any further action on your part.

Some vehicles do have specific bleeding procedures for the cooling system but as far as I am aware this simple procedure is the standard method with your vehicle.

Also it is important to pay attention as to why the vehicle is loosing coolant in the first place. Is there a leak any where - check coolant hoses are not cracked. Is vehicle overheating because of fan failure hence boiling off fluid? Is there evidence of water getting into oil pointing to head gasket problems?

These things should all be considered in addition to clogged radiator.

Hope this helps. Please do rate this answer. Thanks.

Posted on Sep 15, 2009

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SOURCE: service engine soon light stays on......when put

Take it to autozone and have them do a scan, it's free. maybe they can help you.

Posted on Nov 01, 2009

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SOURCE: when i turn on my heat my 2004 trailblazer stalls

if this happens while the defrost of ac is turned on, it could be a seized ac compressor which will cause the serpentine belt to squeal and drag making the engine sometimes stall. if it happens with the ac off and the selector on say the floor, or dash vents, the issue could be a bad alternator and battery. this is confirmed when the blower motor engages and the lights dim and then the truck goes dead.

Posted on Feb 17, 2010

  • 1311 Answers

SOURCE: 2004 Trailblazer sputters and often stalls if fan,

First the throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.
Engine running too cool means that either the thermostat is stuck open or the coolant temperature sensor is defective. Both should be replaced since they are in same area.

Posted on Oct 26, 2010

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I'll try, sure its the right alternator? belt on tight ? did you do something different , are all connections correct, tight, not connected ? when you changed the alt, did you remove the ground cable from the battery first ? may have shorted something out. check your belt tension, maybe thats it. try all this first, you might need prfessional help

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Sounds like that drains your battery. I would check the battery and make sure it is good and holding a charge. Your alternator may be going bad as well. Start your car and take off the hot side battery terminal. Make sure everything inside is off. If it dies instantly, change your alternator.

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2004 Trailblazer sputters and often stalls if fan, defrost, heat or air are turned on. Service engine light is on and coding for enine running too cool. Are these issues related and/or what could be...


First the throttle body needs to be cleaned, grime in this area prevents the throttle plate from closing completely and allowing air to enter, making the air/fuel mixture lean.
Engine running too cool means that either the thermostat is stuck open or the coolant temperature sensor is defective. Both should be replaced since they are in same area.

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2 Answers

When i turn on my heat my 2004 trailblazer stalls


if this happens while the defrost of ac is turned on, it could be a seized ac compressor which will cause the serpentine belt to squeal and drag making the engine sometimes stall. if it happens with the ac off and the selector on say the floor, or dash vents, the issue could be a bad alternator and battery. this is confirmed when the blower motor engages and the lights dim and then the truck goes dead.

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clean your throttle body....same thing happened to me and my truck runs great now.

Mar 19, 2009 | 2004 Chevrolet TrailBlazer

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Check with a GM dealer to see if there is repair bulletin on the voltage regulator in the alternator.

Dec 15, 2008 | 2004 Chevrolet TrailBlazer

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