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Old 01-12-2020, 04:42 PM   #1
Hawkeye1980
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Cant start my 2005 Grand Am GT

Hope all are well. Been away for some time. Restoring my 1989 Formula 350, almost done.

So had to jump start a car. Unfortunately I used a key for my GT that was heavy with other keys. I never had the dealer fix the recall.
Now it won't start. Security light just comes on and never blinks. I bought a new ignition lock and system. I had trouble with the settings the new ignition to my original key but that is fixed. I soldered in a 2200 ohm resistor next to the ignition module. Cut the yellow, stripped the black one to bypass the security.
So still it won't crank, security stays on solid, never turns off. No codes either. Just installed new battery. I can hear the fuel pump prime as well. But still solid security light and won't crank.

This car has served me very well please help!
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Old 01-12-2020, 09:20 PM   #2
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Reading through the forum, not finding help on my problem, even though a few have had the same issue:
security light stays on
No crank
Internal lights, radio, remote trunk release. key fob not working.

I knew my ignition lock was going bad, I just forgot not to put a key that had weight attached on it. I was jumping my mini van and my lighter key chain was on it.
I am wondering did the jumping of my mini van burn out my starter? or my PCM?

I HATE GM security. I have the VATS on my 89 FIrebird, simply plugged in an after market module and no more problems. I want to disable this garbage on my 2005 GT. HELP!!

thanks in advance.
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Old 01-13-2020, 12:58 AM   #3
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Does it turn over? I have done the bypass on an older F body but I didn't think that worked with these cars. If it cranks over, then flashing the computer to disable VATS might be the easiest fix. If the weight of the keys is causing a physical issue with the ignition switch, then it won't do anything.
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Old 01-15-2020, 04:12 PM   #4
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Quote:
Originally Posted by Vegeta View Post
Does it turn over? I have done the bypass on an older F body but I didn't think that worked with these cars. If it cranks over, then flashing the computer to disable VATS might be the easiest fix. If the weight of the keys is causing a physical issue with the ignition switch, then it won't do anything.
Thanks for responding. No it does not turn over all. No clicking, nothing. Just the fuel pump primes. Driving me nuts. The SECURITY light stays on solid. Even after 10 minutes. Tried the 30 minute re learn, no go.

I am wondering if when I jumped my mini van something burned out? Next is to try to jump the starter and see if if at least spins.
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Old 01-15-2020, 11:59 PM   #5
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Check the fusible links if you already replaced the ignition lock. I bypassed my 99 like you did and have not have any problems with it. Make sure you followed the instructions from here:
http://www.bergerweb.net/grandamsecurityfix.htm
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Old 01-17-2020, 09:52 AM   #6
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Definitely check the starter, i had an intermittent one years ago.
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Old 01-19-2020, 07:49 PM   #7
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I would check the wiring to the starter. Make sure they all have continuity.
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Old 01-27-2020, 12:55 PM   #8
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Quote:
Originally Posted by pongagt View Post
Check the fusible links if you already replaced the ignition lock. I bypassed my 99 like you did and have not have any problems with it. Make sure you followed the instructions from here:
http://www.bergerweb.net/grandamsecurityfix.htm
thanks will do. The weather has been bad so I have not had a chance to try anything new yet.
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Old 01-27-2020, 12:55 PM   #9
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Quote:
Originally Posted by nivek98 View Post
Definitely check the starter, i had an intermittent one years ago.
I may just replace it Its the original and the car has over 220k on it thanks.
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Old 01-27-2020, 12:57 PM   #10
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Quote:
Originally Posted by AaronGTR View Post
I would check the wiring to the starter. Make sure they all have continuity.
will do.

I bought a remote starter switch from Advance Auto The kind that has 2 leads with a push button. For bump starting, etc.. What terminals do I hook it up to please?
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Old 01-28-2020, 02:53 PM   #11
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Terminals on the starter. One has a big wire which has the 12 volts.. then the other terminal with smaller wire. Third wire is ground. Pushbutton shorts these two together and engages starter motor. Probably able to find the right wites behind the ignition also, but over my head.
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Old 01-29-2020, 10:06 PM   #12
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I don't see how it could be a bad starter because of the accessories that don't have power. Check the high amperage fuses on the fuse block under the hood and check the pcm like the person did in this article.
https://www.justanswer.com/pontiac/3...on-switch.html
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