Question about 2005 Chevrolet TrailBlazer

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2005 trailblazer idle low after battery replacement

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You may try driving the vehicle a while to see if it helps,if it does not relearn,have the dealer reflash the computer.

Posted on Jul 17, 2010

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Posted on Jan 02, 2017

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I have a 2005 chevrolet trailblazer with a 4.2 eng. the eng. idles rough increase rpm it runs fine keep getting code random misfire P0300


i would check the crankshaft sensor or the camshaft sensor the crank sensor is on the side of the engine i believe the pass .and the cam is in back of the engine .on top

May 08, 2018 | 2005 Chevrolet TrailBlazer

1 Answer

Stalling idling


engine idle to low for extra load at idle.

do not turn on a/c until driving and see if you get the same result.

Jul 14, 2014 | 2005 Chevrolet TrailBlazer

1 Answer

2006 trailblazer- low idle code, flickering lights


it may be caused by the low idle clean the throttle body also check the idle air control valve. the alternator is not spinning fast enough to produce rite amount of volts to your lights.

Dec 02, 2012 | 2006 Chevrolet Trailblazer

1 Answer

2004 Trailblazer 6 cyl. idles too low and sometimes will kill but runs great. A scan code of P0606 comes up which relates to the pcm but this has been going on for over a year and it helps idle better...


The low idle could be caused by a dirty throttle body (TB). Take the TB off the intake and clean it thoroughly front and back sides. While doing the cleaning, disconnect the battery to reset the PCM. This will allow it to relearn to the cleaned TB.
As far as the P0606 code, it is possible that the PCM only needs to be reflashed (memory reloaded). This can only be done by a GM dealer.

Aug 26, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

Engine cuts off when heater is turned on


You need to have the throttle body cleaned, because of grime build up on the butterfly, idle speed is too low and when HVAC is turned on it loads it more. Make sure that the battery is disconnected during the cleaning so that the computer gets reset, and is allowed to relearn to the newly cleaned throttle body.

Sep 20, 2011 | 2005 Chevrolet TrailBlazer

1 Answer

The idle on my 2005 trailblazer is low , and the vehicle shuts-down whenever I turn on the ac.


You vehicle has an idle air solenoid that increases engine speed under a load at idle , they get carbon build up and stop working, some can be cleaned some have to be replaced, ck with your local mechanic, he may just clean it!

Apr 19, 2011 | 2005 Chevrolet TrailBlazer

1 Answer

My trailblazer has a idling problem, the battery gage is dropping when sitting at lights etc.thought it was altenator but changed it out still having the problem when it is sitting still it is idling to...


Very low idle will cause a very low voltage output from alternator, so nothing unusual about that. At low idle the truck is basically drawing from the battery, not the alternator. As soon as you cure the idle problem, the alternator gauge reading will return to normal.

Jan 22, 2010 | 2006 Chevrolet Trailblazer

2 Answers

Low idle on 2006 Trailblazer ext


2005 trailblazer i know ille is set by pcm but is there any thing i can do to rase it up just little bit .

Dec 06, 2008 | 2006 Chevrolet Trailblazer

1 Answer

At stop rough idle


idle air speed controller.
dirty throttle body
air cleaner clogged
air flow meter
bad injector
leaking intake manifold
vacuum leak
bad plugs
ignition components

Nov 22, 2008 | 2005 Chevrolet Trailblazer Ext

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