Jeep Grand Cherokee 5.9 engine ECU Up for Sale is a Working, in excellent condition Jeep grand cherokee engine ECU. This came out of a 1998 5.9 liter V8 (the big one) - may fit others too. Note, this is a pretty rare model. Part number listed at the top or in the large pictures. Check the part number to be sure this is right for your car, I have several of these units for Dodge trucks, if this is not the one you need see my other listings. This may fit more years than just this, check your part number. If it matches, this will fit your car. The last 2 letters at the end of the P/N are usually not important with these units so keep that in mind. This will interchange with-05014152AA56041538AA56041538AB56041538AC56041538AD56041538AE56041538AF56041538AG56041586AA56041586AB56041586AC56041586AD56041538AGThis is a good used, fully functional unit with a 30 day functionality gurantee. Unlike the expensive "remanufacturers" There is no core charge with this unit, nor do you have to send us your original unit, so you will have less down time. The price you pay is the "to your door" price, and you keep your original.This unit was runtested & is functional, and offers a 30 day warranty. Please be sure to double check the part number off your original unit before buying. A defective unit is one of the most common no start or random stalling problems with these trucks. They can also be the cause of erronious check engine lights, cold or hot start problems, or idle control malfunctions. If yours does not have problems, keep an extra ECU in the trunk, you might some day be glad you did... Thanks for looking!