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Originally Posted by 03Alero
I appreciate all the info that people have put on here. I have an 03 Olds Alero, and I"ve been dealing with this problem for quite some time. It got worse and worse, until I was finally having to reset my system 2-3 times per week. I stumbled upon this forum, and I decided to follow the resistor route that many have suggested. I followed the following steps:
1) Started car and cut yellow wire (Security light came on)
2) Measured resistance. I'm not sure if it was me or the multimeter, but I was having a hard time getting a good reading. My best estimate was ~1500 ohms.
3) I installed a 1500 ohm resistor between the yellow wire and the black wire and put everything back together.
4) I started the car, and my security light is still on. I guess it is in bypass mode, and the resistor I installed wasn't close enough to the value it was looking for.
So, my question is how do I force the BCM to reset when it is already in bypass mode? I followed the normal procedure that I used to follow when the car wouldn't start (put key in "On" position and wait 10 mins), but that didn't do anything. Any suggestions?
Thanks!
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OK you sure you got it back together correctly? The resistor should be between the black wire and the cut yellow wire going to the BCM and not the dash and DO NOT CONNECT THE 2 YELLOW WIRE ENDS BACK TOGETHER. Also, when reading the resistance don't forget to meter the other end of the cut yellow wire after you have it started. If all of that is correct then you have another problem going on. You may need to run another wire from chassis ground to the black ground wire as well. If or when you are 100% you've got it right you can play your dice and unhook the battery for 5 minutes then try to start it. It'll either work or lock you out and then you'll have to do the PK2 relearn sequence.