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I have a 2004 chevy Impala 4 door 2 wd, automatic transmission , that has been giving problems for a few years now. In the start it would stop running while being driven. So I took it to a shop and after a long and drawn out process and parts being replaced which the ignition switch was a major one and the car computer was software reset by a professional, for the security system. The car ran a few weeks then did the same thing while running. Got car home and it would start a few times after that then stopped starting altogether. Now it was making noise like it wanted to start but would not turn over. It has been suggested to me to by pass my security system would resolve the issue for good. Is this a viable recommendation for this issue. I hope I have given enough information. Thank you for your time and help.
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You need to reset your troubleshooting process. Start by checking for spark. If spark is present while attempting to start, use starting fluid to see if fuel might be the problem.
It does sound like you believe the ignition switch might be the cause again.; if the security light stays on when the key is in the ON position that could be the problem.
A quick check of the fuses is also not a bad idea; under the hood and in the dash.
If you do decide to check the switch, you will need to remove the radio to push the ignition switch back into the dash and out via the radio opening.
The Pink wire will only have battery voltage (12VDC) when starting or the ON position, the orange will be at battery voltage (12VDC) at all times.
Even if you were to bypass the Passive Alarm System if the switch is not at 12VDC when ON or START it still will not start.
I also support Jotmon1’s suggestion to also check for spark and fuel.
If the car has been sitting and many attempts to start the car check the battery condition as well; it may need a charge before proceeding.
Also, a lot of gm sedans from the early kid 2000’s are known to have body module issues. The running poorly issues would be separate from this BTW.
If the body module is going out, the gauges, electric windows, radio and security system will be very unpredictable or just not work, but that would not affect how your engine runs.O e huge possibility that can cause all this, is a bad electrical connection. The positive goes to the alternator, starter and power distribution box, the negative goes to the engine block and the chassis sheet metal. It’s worth checking all ends of all those connections safely and don’t be afraid to clean them.
Also have the harging system checked in case your battery or alternator is taking a dump.
A poor power output or wonky connection can also cause a lot of this.
Many parts stores will do a free charging systems check, like Autozone.
It could be a pass lock issue, it could be a lot of things actually. If the light is flashing, then it may be a pass lock problem. If that’s the case, you may need to have someone with a GM scan tool check it out unfortunately. More info on no starts here.
http://www.ericthecarguy.com/faq/solving-automotive-no-start-problems
Please keep us posted on how things work out.
Thanks all of you for your responses.. ya’ll have giving me good information and things to look into…. I will give update as I try these out and let you know the answer I find…. 🙂
More than likely the pass lock feature. To reset, turn key to on position for 10 minutes (I believe the security lights goes off at that point), turn it to off, cycle it back to on and then start it. I had this issue off and on for years in my 2003 chevy malibu. I’d highly suggest just getting an electrician to disable the damn thing as it will occur again (I had pioneer electric basically have the system bypass it and it hasn’t been an issue since).
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