Hi guys,new here, so i bought an Impala 2004 base model wich has a problem with the Passlock.the owner try to fix it buy replacing the ignition swicth from a Junk donor but, didn't work.He also replace the BCM from the same donor but didn't work aswell. he was tired of working on the car so he sold it to me. Anyway,so now the car wont start or even crank and the dreaded security symbol flashed in the message center! so i took my Genesys scanner to see if theres any DTC's and i got a full list of DTC's in the Historic only and i found that the scanner wont found the PCM and the Air Bag module, its sa that those are not present.here the DTC's that i found
the three first are related to loss of commucation with PCM but remember those are only in Historic! so now im stuck and i dont want to replace a part that is not the culprit i wanna do a good diagnosys since i'm actually a student in automotive mechanic!
oh and i found out i have no chime at all and the power windows dont work! and i also use the original BCM for the car
if you have some info for me feel free to reply thanks guy