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Chevrolet TrailBlazer, SUV
#9 of 125 2004 Trailblazer - Ignition Problems and Stalling
Aug 30, 2007 (7:06 pm)
I've been having an intermittent problem (you know, the one's that never happen for the service dept) with my 04 Trailblazer.
Every now and then, when you go to start the TB, all of the gauges go crazy and dash lights are flickering. You can hear the various relays chattering. Sometimes, it will hit the starter briefly. If you turn the key off and on a few times, it will eventually start like normal.
It has stalled on me a couple times on the road. When it does, the gauges are doing the same thing. Bouncing all around, lights and relays chattering. Turn it off, try to turn it back on a few times, eventually it starts.
I've considered trying to replace the ignition switch, thinking that there may be a bad connection. I'm hesitant to just start replacing things - it's an expensive way to troubleshoot.
Right now, it happens about every other day.
Any thoughts, other than get something other than a Chevy?
#10 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [dougrsmith]
Aug 31, 2007 (3:36 am)
You have a bad ignition switch. I'm surprised the dealership hasn't tuned into it, because you're having classic symptoms of a failing ignition switch. Had the same problems with gauges going crazy, wouldn't start, etc, etc. Eventually it will fail totally, so it replaced ASAP. Ignition switch is about $50, should be an hour labor at most dealerships ~ $150 total.
Edit: They can be hard to diagnose if you/they can't catch the failure. About the only way is to replace the ignition switch to be sure. The contacts go bad in them over time, generally due to the accessories being on at the time of starting the vehicle. GM is aware of the problem, and has an updated ignition switch.
#11 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [zombywuf]
Aug 31, 2007 (5:46 am)
GM also has TSB's out concerning the weight that people have hanging on their keys. This can cause premature failure since having a lot of weight causes the lock cylinder to ride crooked in the ignition switch.
#12 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [zombywuf]
Aug 31, 2007 (7:44 am)
Thanks - In the thousands of other sites where people post their car problems, no one ever seemed to provide enough description of the problems they were having to know if the problems were the same. All the others said "Car would not start - replaced ignition switch".
I think I will see if I can get the dealer to go ahead and replace it.
So glad I traded in my Toyota Tundra for this Chevy. ;-/
I put 150k miles and 7 years on the Tundra - had the brakes worked on at 120k. That's it. Never had it to a repair shop or dealer to fix anything.
#13 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [dougrsmith]
Sep 01, 2007 (4:49 am)
I had the same thing happen to my TB at the gas station. Gauges and relays going crazy. Turned out that the positive battery terminal had gotten so hot that it melted the metal connector inside. Replaced the bolt inside the battery terminal and haven't had a problem since. So check your battery connections, especially the part that goes directly into the battery. Silly, huh but it's worth a try and could save you some money.
#14 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [dougrsmith]
Sep 02, 2007 (9:11 am)
Doug I have this same problem in an 04 trailblazer ext.. They already changed my ignition switch it didn't fix the problem.. It happens intermittently for me though. Like once a week and the last time it took 5 times to start it.. I hope yours is the ignition, but it wasn't mine. We changed it 3 weeks ago and it happened to my husband today. Ours only occurs when starting it whether hot or cold, not while running already.
#15 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [robandshell]
Sep 02, 2007 (10:25 am)
Sometimes, I wonder if it isn't the Starter, but often the problem begins before I have turned the key all the way to engage the starter.
I suppose I could have a couple problems...
#16 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [dougrsmith]
Sep 03, 2007 (6:16 am)
Check your battery connections and replace or clean them. I bet this solves your problem.
#17 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [dougrsmith]
Sep 03, 2007 (6:46 am)
I am taking it back to the dealer tomorrow, hoping they figure out what is wrong.. Luckily I stil have warranty..
#18 of 125 Re: 2004 Trailblazer - Ignition Problems and Stalling [robandshell]
Sep 03, 2007 (12:27 pm)
I just dropped mine off at the dealer this afternoon.
I was able to get the problem to occur for the tech. He almost instantly said he thought it was a bad connection or bad neutral switch in the gear selector column.
I should know tomorrow. I'll post an update, hopefully to say that it was just that simple.