I asked Sears to come and service a dishwasher they installed 4 years ago. The repairman said the dishwasher was fine but plumbing bad. I then had a plumber come and check the pipes all the way back to the unit. He found the check valve installed with the machine 2" from the dishwasher was broken and stuck in the shut position. When I called Sears to complain that their technician had not checked the dishwasher's own check valve or hoses, they said they don't service the hoses or check valves but only the machine itself -- even if they installed the device. They did not disclose to me that they would not check the check valve or hoses prior to the repair or I would have probably called someone who could everything. Now I am out $135 to Sears and a bill to the plumber. Caveat emptor! Some repair companies might not disclose what part of your appliance they will or will not service!