Long stories I bought 1999 GMC K2500 for plow snow. Had issue with key ignition it was hard to turn.
I end swap with junkyard steering column from 1997 K1500 they look exact. Right now it only run for 1-3 seconds then died.
I really want bypass that passlock it drove me crazy. 3 hours of try reset by do 30 mins relearn procedure.
I notice security light flash like 2-3 times when you turn key ON then it went off.
I read that you could bypass with this one but I wasn't sure if it will work for K2500? http://www.bergerweb.net/PasslockFix/