Product review (4 stars): Try using the old pulleys.
After 12 years of service a door balance cable broke on our Sears (Whirlpool) dishwasher. I bought the replacement part from an outside vendor on Amazon. The kit was half the price Amazon asks and one quarter what Sears wants for the same kit everyone sells. It comes with cables and new pulleys for both sides. Once you wrestle the dishwasher out from the cabinet the repair is easy. Do both sides, of course, as the unbroken cable is as old as the one that broke and will probably not last much longer. The new cables are also a bit shorter. The new kit has pulley sets with free spinning wheels both upper and lower, which would seem to be an improvement over the original with it's fixed upper guide. But once the parts were installed the door made a godawful skreetch! Slathering on Teflon lubricant made no improvement. When I traced the noise to the new pulley wheels and put the old ones back on, the noise disappeared. The door now maintains it's position perfectly, opens smoothly and is absolutely quiet!