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Old 08-23-2011, 05:38 PM
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Chevy pass lock system

The dealer said I need a new pass lock and ignigiton and a new case for 895.00 any ideas how to do it cheaper? The security light was on for several weeks before it shut down. I was able to restart just before the tow truck came, took it to the dealer who reset it and it stopped for a few starts and then came back on again. I can't wait to see if it will start again tommorrow morning. Got any ideas?

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Old 08-25-2011, 09:34 AM
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what year, make, and model is it?
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Old 08-25-2011, 10:08 AM
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If it's an earlier passkey system, there is a very cheap solution to just bypass it.

GM only used 15 different resistance pellets in the keys. You can measure the resistance on that pellet with your Ohm meter. Hold the probes to each side of the key on that little metal strip in the middle of the pellet. You can pick up a resistor at Radio Shack. You may only need one, but, depending on the resistance needed - you may need to combine more than one to reach that resistance level.

I did one on a 97 Lumina. There is an orange sleeve under the column that has two skinny wires inside. If you don't want to cut the wire between the connector and the ignition switch, you can cut off a 4-6" section at the junkyard, and just leave the connector on your column unplugged. You could either use crimp connectors or solder the resistor(s) inline.

If you have a newer passkey 3, there is a passlock bypass you can buy for under $100.

If I find a pic of that orange wire connector, I'll post that. Thought I had one saved.
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Old 08-25-2011, 10:54 AM
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DO NOT mistake the yellow sleeve which also has 2 small wires. This is airbag wiring. Airbag wire colors vary as far as I remember, but passkey wiring is always 2 small white wires and not always inside a sleeve.
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Old 08-28-2011, 11:28 AM
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Yeah, definitely stay away from air bag wires!!

I found a picture of the orange sleeve with the two white wires inside over on www.LS1.com. That is right under the column.....likely have to remove an access panel to see it.



And the 15 different resistance pellet readings.
Attached Files
File Type: txt 15 Pellet Codes for Passkey.txt (371 Bytes, 57 views)

Last edited by GSXMEN; 08-28-2011 at 11:39 AM.
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Old 08-28-2011, 11:38 AM
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Here's another shot (90's F-body with air bag).....found over at www.thirdgen.org.

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