Key reprogramming

2001 CHEVROLET IMPALA
170,000 MILES • 3.8L
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BOBRA 69
  • MEMBER
  • 1 POST
I can't get a new key reprogram to the engine. What does the pigtail wires coming from the ignition switch control?
Dec 23, 2020 at 8:10 AM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
The wires that come off the ignition switch are for the passlock sensor. Basically this is the sensor that picks up the signal from the key to tell the system that it is a good key and it is ok to start the engine.

Are these wires not connected to anything? If not, that is the issue.

If not here is a video that shows how to program GM keys that should help if you need that as well. Let us know about this and we can go from there. Thanks

https://youtu.be/uOXUIfddHBU
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Mar 13, 2021 at 2:33 AM
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