Question about 2004 Chevrolet TrailBlazer

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2004 Chevy Trailblazer We had to replace the

2004 Chevy Trailblazer We had to replace the battery 2 months ago..since then we have had trouble and have changed spark plugs and are still having problems with car dying when idling with AC on...does fine if AC is off. Then Speedometer quit and now the back hatch will not unlock

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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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Well you might need to replace your altanater

Posted on Feb 23, 2012

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Has there been a recall on a 2004 trailblazer gas tank


Looks like there should have been, but only 2 covering lighting. See link at the bottom.

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  • http://www.cars.com/recalls/chevrolet/trailblazer/2004

    May 23, 2016 | Cars & Trucks

    1 Answer

    2004 chevy trailblazer power loss, high rpms, low ppms


    Check the timing chain. Some times the chain will shift with worn teeth and get out of synch. This will cause the engine to lose power and back fire. Sometimes with a flame through the carb. I did that one once. Easy fix if it is the problem.

    Oct 28, 2013 | 2004 Chevrolet TrailBlazer

    1 Answer

    I replaced battery on 2004 chevy trailblazer and now a/c blows cold and hot


    Before any parts are replaced in the HVAC system, try the following procedure to recalibrate the system. Turn all switches and controls to OFF or fully CCW positions, then disconnect the battery for about 2 minutes. Reconnect the battery and turn the ignition to the ON position (don't need to start engine) and don't touch any of the HVAC controls for about 2 minutes. After that try the system again and see if it works correctly, if not, you will need to have a mechanic diagnose it.

    Jul 07, 2012 | 2004 Chevrolet TrailBlazer

    2 Answers

    Battery light on my 2004 chevy trailblazer. It lasted a day then all the ABS breake light came on the the battery drained. The truck shut off. What could this be. I bought a brnad new battery 2 years ago.


    The battery light comes on when there is an issue with the charging system. Most likley you have a bad alternator. With the engine running you should see a min. of 13.5 volts at the battery and better yet 14+ volts. If you have 12.5 or less than the alternator is not charging.

    Once the vehicle is started the battery is no longer in play. The alternator is what keeps the power supply to the vehicle and recharges the battery for the next time you want to start the vehicle. Once battery voltage drops below 9 volts or so systems start to shut down. Eventually the battery will drain enough that the engine management system can no longer function and the vehicle will stall.

    Sep 30, 2011 | 2004 Chevrolet TrailBlazer

    1 Answer

    Why does my 2004 Trailblazer run rough at stops and AC is on? Doesn't stall and temp. is fine. Also idle gage seems fine. It also sputters when shutting engine off. Just had the motor mounts...


    ONe of the "easy" fixes is buy a can of throttle body cleaner. Remove the air intake near throttle boddy and clean the inside of throttle body as best you can this should help it. If it doesnt have it checked out it could be more advanced problem. Good Luck.

    Sep 09, 2011 | 2004 Chevrolet TrailBlazer

    1 Answer

    When trying to start car battery needs jumped it was replaced about 4 months ago,it needs jumped started and keeps turning over trying to start.


    this means you most likely have a parasitic lose this were something is drawing voltage from battery even when car is off

    Jan 27, 2011 | 2004 Chevrolet TrailBlazer

    2 Answers

    Hi ;battery guage , speedometer ,rpm guage stay bottomed out.fuel guage did same thing couple o days ago but came back normal.


    chevy refuses to recall this speedometer. The same part is in several other models and they were recalled. The stepper motor in the gauge cluster is faulty. The dealership will charge around $700 to replace it. I reported it to the gov't agency that handles recalls and chevy in detroit. No results.

    Jan 06, 2010 | 2004 Chevrolet TrailBlazer

    1 Answer

    At what mileage should the coolant be changed in a 04 Chevy TrBl?


    Renew the coolant every 24,000 miles or 2 years which ever comes first.
    If your battery is in good condition, there is no need to change it.

    Dec 02, 2008 | 2004 Chevrolet TrailBlazer

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