Question about 2004 Chevrolet TrailBlazer

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My 2004 chevy trailblazer loses power when driving, its like it stalls but doesnt die, and then regains power. why ?

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BAD GROUND SOMEPLACE , WE CAN NOT TEST IT FOR YOU

Posted on Feb 24, 2019

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Posted on Jan 02, 2017

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SOURCE: 2005 Volvo S40 T5 is losing power while driving

had this problem as well.. check the oxygen sensor on it (sometimes critters like that wire) or like shel said dirty injectors or filters could be it.. bad gas is also another one... dont go to places with old tanks or that is really cheap, run at least 91

Posted on Jan 19, 2010

  • 246 Answers

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

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SOURCE: 2004 chevy trailblazer fuse box diagrams

I have front and rear a/c. The air is blowing in the back but not in the front. Don I have 2 blowers/units. Could this be a fuse?

Posted on Jul 15, 2010

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SOURCE: 2004 chevy trailblazer-Reduce engine power

You need to get the fault codes read to determine where the problem is that set the SES light. Autozone will scan your car at no charge. At some point you will need to get a mechanic involved to further diagnose the codes.

Posted on Sep 25, 2010

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SOURCE: 2004 Chevy Trailblazer We had to replace the

For the stalling issue, 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.
The dead speedometer could be a bad stepper motor in the instrument cluster or a bad speed sensor on the transmission. If the cruise control is not working, the problem is most likely the speed sensor.

Posted on Oct 18, 2010

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While driving 2006 impala down the road, car tries to stall lights interior and exterior flash, but car never stalls and regains power immediately?


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Sometimes the Computer [PCM] that controls the engine will loose it's memory on how you've driven it when power is removed. It should reset itself after a few miles of driving.

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2004 Chevy Trailblazer We had to replace the


For the stalling issue, 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.
The dead speedometer could be a bad stepper motor in the instrument cluster or a bad speed sensor on the transmission. If the cruise control is not working, the problem is most likely the speed sensor.

Oct 15, 2010 | 2004 Chevrolet TrailBlazer

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try changing the air filter ,i had a problem ,at ilde in drive my trailblazer would stall, changed the air filter now it's not stalling and got my power back ,there is a secondary air pump that i have to change ,
not sure were it is ? still not running perfect but it's running better .and my service light is on too.
i got it put on scope ,it's the pump .
not sure if this helps ,but i'm start to run in to problems too,i have a 2004 trailblazer.
i like to do fix things myself ,i hope i can.it's the cost if you know what i mean.

Dec 17, 2008 | 2004 Chevrolet TrailBlazer

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