HomeAll RepliesReply To: CT4 is event code 4300. How much longer? Reply To: CT4 is event code 4300. How much longer? Sponsored September 1, 2022 at 10:08 am #722803 SGarciaParticipant Lol could be months ! Mine has been at 4300 for over a month so far… Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored