MY VACUUM WON'T SHUT OFF EVEN AFTER SLIDING THE "ON/OFF" SWITCH INTO THE "OFF" POSITION. I HAVE ALREADY REPLACED THE ELECTRONIC SWITCH (SEARS #8191600) TO NO AVAIL. PROBLEM STILL PERSISTS. SHOULD I REPLACE THE WIRE HARNESS (SEARS # KC37GBZTZV06)???

Model #116.25813508 won't shut off at the canister. This thing's only 13 months old (coincidence that the warranty is for 1 year? Yes.)