This is the 2nd chevy venture I have had with this problem and have found several other complaints about it on the internet. Seems like gm would repair the problem this is ridiculous. Lucky I was driving it when it happened - if it was my wife it probably would have overheated and blown up. I have stopped driving it long distance in fear it will overheat and ruin the heads or gaskets . GM should take responsibility for this because it is an obvious problem with the vans. I have tried repairing it by putting new relays in and temp sensor but nothing has seemed to work. very upset