Question about 2002 Chevrolet TrailBlazer

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2002 trailblazer I just recently had the battery changed on my car and now I notice that whenever I cut on the air conditioning it cuts off.

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  • wkrafick Sep 02, 2008

    I have the exact same problem! Just replaced the battery and now it won't idle with the a/c on.



    Suggestions anyone? Thanks!

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  • 43 Answers

First you should try cleaning the throttle body and let the computer relearn its idle by unhooking the battery again and restarting

Posted on Sep 29, 2008

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1 Answer

What can I do to fix my ignition in my 2002 chevy trailblazer ? It won't cut off and when I finally got it off it won't cut on.


What do you mean cut off or cut on ? turn on turn off ? Ignition switch problem ? Chevy had ignition switch problems .

Jan 03, 2016 | 2002 Chevrolet Chevrolet TrailBlazer LS

1 Answer

What causes our 2002 trailblazer to shut off every time we connect the wire to the air condition accummulator


Problem could be the AC compressor going bad, or more likely, the throttle body needs to be cleaned thoroughly front back sides. Also, the PCM (computer) needs to be reset to allow it to relearn to the newly cleaned TB.

Jul 10, 2014 | 2002 Chevrolet TrailBlazer

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I have a 2002 trailblazer. The car stalls now for whatever reason.


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. Make sure to clean the front and back sides of the throttle body. Also, disconnect the battery during the cleaning process to allow the computer to reset and relearn to the cleaned throttle body.

Mar 04, 2013 | 2002 Chevrolet TrailBlazer

1 Answer

On 2004 Trailblazer, when air conditioning is turned on car does not idle right almost cuts off. no problem at speed, only idle & slowing down.


I would suspect the clutch on the air conditioning unit, also if the unit is overcharged
from a recent charge this would also bog the engine. At speed it would not be as pronounced.
Hope this helps.

Apr 25, 2011 | 2004 Chevrolet TrailBlazer

2 Answers

While standing still in traffic, turn heat on and the engine shut off what is this problem?


Let me guess....you recently unhooked or changed your battery? Easy fix, let me know if you did this....

Mar 02, 2011 | 2002 Chevrolet TrailBlazer

1 Answer

2002 trailblazer cuts off when a/c comes on


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.

Aug 30, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

2002 Chevy Trailblazer idle down cut off when heater or AC is on


most of the time computer just needs to relearn itself. should straighten itself out after a drive.if not try cleaning the throttle plate

Dec 03, 2008 | 2002 Chevrolet TrailBlazer

1 Answer

2002Chevy trailblazer engine cuts off when heater & ac is on


remove the airintake boot and clean throttle butterfly with a rag and carb cleaner

Dec 03, 2008 | 2002 Chevrolet TrailBlazer

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