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  #1  
Old 10-23-2007, 12:26 AM
bradt bradt is offline
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2004 Chevy TrailBlazer LS
Dark Green Metallic 4.2L I6 4X4
Join Date: Oct 2007
Location: Ontario, Canada
Posts: 23
04 Will NOT Start

Hi all, I am new to the site and have a specific Problem. When I put the key into the ignition and turn the key my gauges and all go Hay wire. Turn the key and nothing !

I can not even put it in gear, with the key in the normal position. I step on the brake and the button on the shifter will not go in.

I checked the battery there is 13.2 volts and all the lights, radio etc.. work. I tried boosting it and it was getting 13.8 volts for about 20 minutes. SAME Thing as before, gauges that go haywire.

Is this a potential common problem ?
Is this a possible ignition problem ?

Any suggestions on where to look would be appreciated.

Thanks

BRad
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  #2  
Old 10-23-2007, 02:10 AM
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ssmedt ssmedt is offline
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2004 Buick Rainier
Cashmere Metallic 4.2L I6 2WD
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sounds like the ignition switch. i had the same problem with the same symptoms on a 97 blazer; turn the key and light light up but no crank and can't put it into drive, nothing except dash lights and my problem was the ignition switch.
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  #3  
Old 10-23-2007, 06:13 AM
-crash- -crash- is offline
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2002 Chevy TrailBlazer LS
Black 4.2L I6 4X4
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just for the asking did you pull your positive post off and inspect ? sometimes those darn things snap ! and look as though they are fine. other than that with also thinking the ignition switch for sure as they are a very common problem with the trailblazers. good luck
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  #4  
Old 10-23-2007, 06:38 PM
hingarfi hingarfi is offline
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2002 Chevy TrailBlazer LT EXT
Carbon Metallic 4.2L I6 2WD
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Ignition Switch

Hey guys. I have read enough to suspect my ignition switch. Is this a DIY project? If so, is it a major skill project? How about the required PN for 2002 TB EXT.
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  #5  
Old 10-23-2007, 09:28 PM
bradt bradt is offline
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2004 Chevy TrailBlazer LS
Dark Green Metallic 4.2L I6 4X4
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Thanks for the answers, I did look at the battery posts as I too have heard of that problem.

I actually switched the battery with my Malibou, this did not fix the problem. Same problem and symtoms.


Brad
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  #6  
Old 10-23-2007, 09:38 PM
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superman_79065 superman_79065 is offline
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2002 Chevy TrailBlazer LT
Black 4.2L I6 4X4
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How mechanical are you? I did my switch myself, with a little helpful advice from a GM tech. Advice that I now pass on to you, grasshopper. ...

First things first....is the key stuck in the ignition? If so, directly underneath the key cylinder, in the bottom half of the steering collumn cover, you'll notice a small plastic cover with a slot in it. Remove this cover carefully with a screwdriver or pocketknife and set it somewhere you won't lose it. Inside the hole you've just uncovered is a metal button that when pushed with a pen or small screwdriver will release the key from the cylinder.

Now remove the screws that hold the upper and lower halves of the steering collumn cover together. The cover is also held together with some plastic slots and clips that are molded into the covers themselves, so be careful not to break these off. With the cover removed, you can see the screws that hold the switch to the cylinder. I believe these are torx head screws, but not theft-proof.

Now, the trick is making sure the new switch is in the same position as the old on when you replace them. There is an internal gear in the switch that is slightly exposed and meshes with a gear in the ignition cylinder. If the new switch is in a different position then the switch you took out, this makes for many headaches and much cursing of Gm and electricity in general. According to the GM tech I talked to, the switches are supposed to ship in the "off" position. So, theoretically, an unopened switch from the dealer should be in the "off" position. Making sure you'r key is in the off positon on the switch before removing the old switch should ensure that you don't have any problems being out of position.
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  #7  
Old 10-24-2007, 08:19 PM
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TBlazeruss44 TBlazeruss44 is offline
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I'm not trying to break balls or anything, but should you,as a precaution, disconnect the negative battery terminal first-before starting this type of DIY project?
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  #8  
Old 10-24-2007, 08:29 PM
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superman_79065 superman_79065 is offline
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Quote:
Originally Posted by TBlazeruss44 View Post
I'm not trying to break balls or anything, but should you,as a precaution, disconnect the negative battery terminal first-before starting this type of DIY project?


Absolutely right....sorry I left that out. Basically, you should disconnect your neg cable before attempting ANY electrical repair on these vehicles....

Remind me to tell you all the story about me shorting out my XM and disabling my TB for a few days sometime....
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  #9  
Old 10-24-2007, 09:08 PM
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ThEx CoNvOy x07 ThEx CoNvOy x07 is offline
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Quote:
Originally Posted by ssmedt View Post
sounds like the ignition switch. i had the same problem with the same symptoms on a 97 blazer; turn the key and light light up but no crank and can't put it into drive, nothing except dash lights and my problem was the ignition switch.
I agree
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  #10  
Old 10-24-2007, 09:14 PM
bradt bradt is offline
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2004 Chevy TrailBlazer LS
Dark Green Metallic 4.2L I6 4X4
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Quote:
Originally Posted by TBlazeruss44 View Post
I'm not trying to break balls or anything, but should you,as a precaution, disconnect the negative battery terminal first-before starting this type of DIY project?
Good point, When you get all excited to jump in there you forget these simple things

Thanks

Brad
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