In order to install a new power cord you will need to remove the top & front access panel. First,
before attempting access. Open the dishwasher door & remove the screws #11 holding the top #14 in place & slide the top off. Next, remove the screws #3 & 13 & remove the inspection panel #12. You can now unplug the quick disconnect & remove the ground wire for the power cord at the terminal box. Pull the old cord out of the hose housing assembly #8. Replace the new cord in reverse order.
SAFETY NOTICE: Be sure to disconnect power to the appliance before performing any repairs. If you are not comfortable with doing any voltage checks that might be recommended, please contact your local service provider for repairs. Be aware that there could be sharp edges inside the appliance that could cause cuts or other injuries to yourself or others.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services