I purchase ACDELCO #12592124 Engine Control Module (ECM Computer) for 2005 CADILLAC CTS 3.6L V6 DOHC.
When try to programm it I have following errors:
1) E4491: Reprogramming error! Check all connections and reset programming interface!
2) E4423: Unknown reprogramming error
Please HELP ME
When try to programm it I have following errors:
1) E4491: Reprogramming error! Check all connections and reset programming interface!
2) E4423: Unknown reprogramming error
Please HELP ME
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