I have for sale a Bully Dog Outlook screen I got rid of from my 2006 GMC Duramax. Use instead of assesses. Includes the pillar shell that fits Chevys/GMCs. Includes new Exhaust Gas Temp probe. Plugs into your OBD port, then keep track of as much as 4 parameters at when. Over $300 for brand-new ones. Will fit some Chevys/Fords/Dodges from 99-up. $100.