I PURCHASED A NEW 2007 GMC ACADIA IN MARCH 2007. IN AUGUST 2008 (21,000 MILES) I BROUGHT THE CAR IN BECAUSE THE POWER STEERING WOULD SOMETIMES FAIL, ESPECIALLY IN THE RAIN. DEALER PERFORMED NEW LINERS PER MAINTENANCE BULLETIN 07-02-32-010. RETURNED CAR FOR SERVICE OF THE SAME PROBLEM OCTOBER 2008 (28,000 MILES) - DEALER STATED THAT THEY COULD NOT DUPLICATE THE PROBLEM. RETURNED THE CAR AGAIN IN MAY 2009 (35,000 MILES) FOR INTERMITTENT LOSS OF POWER STEERING. DEALER REPLACED THE STEERING RACK. BROUGHT THE CAR BACK THE NEXT DAY BECAUSE THE PROBLEM STILL OCCURRED. DEALER REPLACED THE POWER STEERING PUMP (WAS PUTTING OUT HALF THE REQUIRED PRESSURE). *TR