Last post on Nov 14, 2013 at 3:31 PM
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Chevrolet TrailBlazer, SUV
#101 of 124 03 trailblazer LT sometimes will not start
Aug 31, 2010 (2:17 pm)
Recently (about a month ago) I purchased a 2003 trailblazer LT with 67000 miles, it had been driving great, until about a week ago. I go to start it and it cranks but will not catch. I leave it alone for about an hour I believe I try again and it starts right up and was fine for about a week. Then same thing happened this time I kept trying over and over to get it to start for about close to an hour and then finally I was able to get home. It just seemed odd that it trying to crank but will not catch almost like it wasnt getting fuel, Im going to have someone look at it but in the mean time was wondering if anyone had any ideas as to what the problem could be? Thank you for any information
#102 of 124 2003 Trailblazer Problem
Sep 03, 2010 (7:53 am)
I am glad to hear that I am not the only one having issues with my 2003 Trailblazer LT, over 100,000 miles. When trying to start the vehicle all of the lights will come on it will try to crank over but won't start, put in a new battery, turn the key and it still won't start on 1st try, may have to try 5 or 6 times before it will catch. and can't step on the gas because it acts like it will flood. When it starts finally, it runs fine. Anyone with any ideas what might be wrong, advice is appreciated.
Sep 24, 2010 (6:44 am)
Car would not start, check battery, found to weak to start car, had jumped. When home and removed and replaced with new battery, First start car almost stalled out but RPMs came up and idled fine. This morning started up fine but did same thing with idle. When drive would stall out unless put into neutral, idle still low.
No check engine light (yet). But did have before (on and off) battery replaced.
#104 of 124 TRAILBLAZER IDLE PROBLEMS
Sep 24, 2010 (7:02 am)
Mine has the same problem for the last 2 months. When the a/c is turned on at idle it stalls. Just other day it went away and now idles fine with the a/c on. ??????????????????????????????
#105 of 124 Re: TRAILBLAZER IDLE PROBLEMS [luvdiesel]
Sep 24, 2010 (7:06 am)
Idle air control valve? Over time, gunk builds up and they get sticky. I haven't had to service or replace the one on out TB, but I have on the Durango with about the same mileage.
#106 of 124 Re: KEEPS STALLING [butch1017]
Sep 29, 2010 (10:30 am)
Disconnecting your battery has allowed the PCM to reset to original factory default settings. Unfortunately, your throttle body is dirty, but you didn't know it until now because the PCM has been altering the way the engine runs to compensate for it.
Now that the computer thinks everything is great, it's not taking into account how dirty the Throttle Body is, and that's where your getting the bad idle.
Remove and clean the throttle body as soon as you can, (and yes, disconnect the battery while you do it again), and after it's all clean and you reconnect the battery, all should be well.:
here's the "how to":
#107 of 124 2002 TB no start, electrical wackiness
Oct 23, 2010 (10:28 am)
Lately every 4 or 5 starts my 2002 Trailblazer won't turn over at all. Power locks don't work, can't pull key out of ignition, and buzzing sound comes through speakers. Also a noise coming from back seat fuse box. (Not sure if it's related, but the temp/compass display went out a couple weeks ago.) I can't manually lock the door when this happens either. I've checked the fuses, DH replaced the ignition switch. Any other ideas? Right now I just want to whack it with a baseball bat.
#108 of 124 Re: 04 Trailblazer Trouble [carmax21]
Feb 18, 2011 (1:46 pm)
If your still having the problem, replace your ignition switch.
#109 of 124 Re: 03 trailblazer LT sometimes will not start [keegankmr]
Apr 22, 2011 (7:20 pm)
any answer to this I have the same issue!!
#110 of 124 02 TB doesn't start
Sep 12, 2011 (10:33 am)
Does anyone have this problem? turn ign key to start, solenoid clicks, turn key off and try again. Nothing. No dash lights and key stuck in ign. I jiggle wires down by starter and/or remove postive batt terminal, replace postive batt terminal and then dash lights and eventually engine starts. TB does this more often that it used to. If you have had this exp. let me know what to do.