when car warm up the power steering get hard to turn when at idel on 2001 Cadillac Seville SLS

power get hard to steer when car runs for hour at idel

Asked by for the 2001 Cadillac Seville SLS
First check the condition and level of the power steering fluid. The steering system could be flushed out and flushed until the fluid is clear coming out the return line to the reservoir as the wheel is turned from side to side with the engine running. Your vehicle also has electronic variable assist that may have a problem within its operation but the system needs to be properly diagnosed to see what is going on. Its foolish to speculate without doing proper diagnosis.