2003 chevy silverado LS

Why does my high beam indicator stay on constantly when the truck is OFF. I’ve found many complaints online about this problem and hope someone has figured it out by now. The indicator works fine as supposed to while the truck is runningĀ  (only comes on with high beams on). When truck is turned off indicator come on after 15 seconds and stays on indefinitely. If any elect. circuit is used (open door,flip light switch,move the high beam signal, turn key, etc.) the indicator goes off then back on 15 seconds later if the truck isn’t started. All of my lights work properly on the truck,(every one of them) so it’s not a bad bulb issue for sure. I’m hoping someone knows what is going on since this is a common problem. Could it just be due to the recall on the cluster that was only available for 7 years or 70000 miles? The cluster does have bad readings on oil and volt readings. I’m tempted to take out the cluster and disconnect the indicator light just so it doesn’t drain the battery over time while not being driven.