cab is usually the controller of the antilock brake system, i.e. ABS.. Iam fighting this in a durango and its the cab which on ebay there is a supplier that rebuilds them in a day for about 89$ and gurantees them for life, Iam using that to fix mine.

ABS goofs up the speed, speed control, traction control, and can also do the esp also. Id look on ebay it is the deal for me, I dont wanna buy an 80,000 mile unit out of a another car.

Enjoy, Woody