hello to day just retro fitted a cd 70 and cid in to my o3 vectra all working fine change my steering wheel to one with scrollers (facelift) program cim from botton to scroller ok it shud all work now put no i press the right side and it beeps the horn was told i need a new cim unit can i just get another cim unit swop out my eeprom chip then would it work or is it only work will programing it or duz anyone have another way to get the old one to work right thanks
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