HELP!!! No crank ignition issue!!! - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 08-25-2008, 10:54 PM
Doc Doc is offline
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HELP!!! No crank ignition issue!!!

OK guys, here is the story. My wife went out the other night to roll the windows down on our 2003 trailblazer (6 cylinder), and left the key in the run position over night. Next morning I went to start the truck and well......dead battery. Charged it and tried to start the truck.....nothing. I have replaced the battery, ignition switch, checked the starter relay and double checked every fuse in both boxes. It's not the starter because I can jump the starter with a screw driver and make the engine turn over. Everything works inside the truck and all the lights come on just fine. I am stumped. Any suggestions??????
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  #2  
Old 08-25-2008, 11:33 PM
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brendanpower brendanpower is offline
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2007 Chevy TrailBlazer LT
Moondust Metallic 4.2L I6 4X4
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Does it have the battery run down protection?
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Brendan,
PCMFORLESS Tune, CAI, HID's, PIAA's, Mirror Signals, Glasspack & Tip
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  #3  
Old 08-26-2008, 11:30 AM
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neelskit neelskit is offline
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2002 Chevy TrailBlazer LT EXT
Pewter Metallic 4.2L I6 4X4
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Does the security light on the dash flash when you turn the key to start?
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Old 08-26-2008, 04:43 PM
Doc Doc is offline
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Yes, the secuity light flashes a few times when the key is turned to the on position and then it stays on.

Does anyone out there with a service manual know what the security module reset procedure is? I know it is something like turn the key on and wait 'till the security light turns off, then turn the key off for a minute and repeate the procedure 2 more times but I would like to see the actual procedure. I don't know if the key has to be turned to the crank position first and then to the on position or if there are other details I don't know about. Thanks again for the help.
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Old 08-27-2008, 08:45 AM
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neelskit neelskit is offline
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I know that some people have had to do a security re-learn after getting a tuned PCM. I've seen the procedure on here before...

Here it is:

http://forums.trailvoy.com/showpost....3&postcount=24

This should get you back up and running.
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  #6  
Old 08-27-2008, 08:44 PM
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Neelskit,

Thanks for the link. I was able to talk to a mechanic that was nice enough to give me the reset procedure last night and that did the trick. The procedure he gave me is the same procedure that was in the link so that is definetly the right steps to reset it. I am still a little puzzled as to why leaving the key in the on position would have caused my issue but I guess I will get over it since I have a running truck now!!

Thanks again for the help.
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  #7  
Old 08-29-2008, 03:15 PM
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neelskit neelskit is offline
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2002 Chevy TrailBlazer LT EXT
Pewter Metallic 4.2L I6 4X4
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No prob!

The electronics on these trucks can be stubborn at times. In your case, probably just a glitch.

Glad your driving again!
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  #8  
Old 11-05-2008, 10:19 PM
KrazyRat KrazyRat is offline
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2002 Chevy TrailBlazer LT
Graphite Metallic 4.2L I6 4X4
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start issue

I'm having a no start problem, I've gone through the threads with no avail. My shifter is NOT getting stuck at all and it has free range. That is why I want to rule out the ignition switch. I turn the key and nothing happens, if I jiggle the shifter around while attempting to start it, sometimes it works. I started with the cheap end of it and replaced my park/nutural safety switch, it was only 34.99. It seemed to be fine and I thought I was out of the woods until it happened to me again twice today. So I go through the normal routine of shifter jiggle and turning it over and I finally get it to start. This may sound weird but it seems to only occur when it is cold. Please help me!
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  #9  
Old 12-25-2012, 09:55 AM
Trchamp Trchamp is offline
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Did you ever find out what is wrong? I am having the same problem.
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