Thanks for the suggestions! Today I finally got a chance to work on the tahoe a bit. Of course the battery was dead. I put the original ignition switch back in. and no changes to the security light or anything. I tried both a 1000k and 1500k resistor to hopefully bypass the passlock but...
So I have a dreaded passlock bug in my Tahoe now. Earlier this summer I had to replace the ignition switch wiring (turns out that wasn't the issue anyway) and ever since then the security light is on constantly and the battery dies after a day or so. It has a brand new battery and alternator...
So the ignition switch went bad in my 02 Tahoe (stuck in 3rd gear, had the common trouble codes for a bad switch). I bought the wiring kit from the dealer and replaced it tonight. Once I got it back together I went to start it and no go. Everything works but when I turn the key it doesn't...
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