[96DEVILLE]

I Have A 99 Deville With Same Problem. I Changed The Water Pump Twice, W/p Belt. The Tool Was Under $20 At Auto Zone.... Changed Thumistate Twice ,ran It Without One For A While, New Hoeses. No Help!! My Car Runs Hot When I Drive Up A Incline... This Was Last Summer. I Stopped Driving It For A Few Months. While Trying To Find Problem... This Past Winter I Started To Driver It Again And Had No Overheating Problems Car Run Grate For The Last 4 Months...... How That To Weather Is Getting Warmer..when It Hits 70 Deg. Out Side My Car Run Hot Again ????? If It Is A Head Gasket Why Does It Run Good In Cold Weather ??? If I Find My Problem I WILL Let You Know....or If Anyone Has Any Advice Plaese Responed.. Good Luck...