In this episode of PowerNation Extra, LT from Truck Tech explains how to fix electronic issues in the instrument cluster which is common in 2003-2007 GM truck and SUVs - like the one they have in the shop. Some fixes you can try are:
1. Take the cluster out and send it to a repair shop for aroun $100.
2. Go down to your local dealership and likely need to get a new cluster for around $500.
3. Or repair it yourself, as LT shows you how, for about $20 and an hour of your time.