Jeep Cherokee engine ECU Up for Sale is a Working, in excellent condition Jeep cherokee engine ECU. This is the unit that works with many grand cherokees - This from a 1997 4.0 liter 4X4 Automatic Federal emission truck. 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 grand cherokees. This may fit more years than just this, check your part number. If it matches, this will fit your car. The letters at the end of the part number is the software update version, and not typically very important.These are very hard to find used for a fair price in good working condition. 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 erroneous 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... These units have been NLA for a while now, and finding a correct unit is nearly impossible. Thanks for looking!