Mechanic Special. GMC Sierra fully loaded. 4x4. Power windows and door locks. 230,000 miles. Truck is burning coolant. Diagnosed by Bakers Diesel in West Haven. Leaking exhaust gases into coolant system. Truck will need head gaskets. I’ve inherited the truck from dad who passed Jan 10th. Looking to sell as is. Clear title. Asking $10,000 obo.