SSR FAMILY MEMBER
My truck would over heat after driving only 3 miles! We had to haul it on a U- HAUL TRUCK and trailer 550 miles to our home in Michigan. I brought it to a speed shop who puts super chargers on for Berger Chevrolet and any one that wants to pump up their horsepower! His place is called CUSTOM HORSEPOWER and has a dino to fine tune your vehicle plus he has his own cars that he races! The first thing he did was to pull the exhaust manifolds and spark plugs to look inside to see if water got into the motor. He found to my surprise that no water got into the firing chambers, so that was good news that the head gaskets had not blown! He found that my lower radiator hose had a small leak and when you turned off you motor it would suck a little air into your engine each time. The air will build up in your water pump and cause a air block because your thermostat is lower than the water pump! The air will not go down and move into your radiator so there is no water moving through your engine! Fix is to purge the air from the water pump. He said all LS motors have the same weakness. Older motors have thermostat on top and water flows to top of radiator, not down to bottom!