Engine computer from a 1999 Jeep Grand Cherokee. This is in perfect working order. The case and connectors have some wear from normal use but no broken parts. You will receive one PCM with one of the interchangeable part numbers listed below. Fits 1999 Jeep Grand Cherokee with 4.0L engine, California emissions and part number R6041424AI or 56041424 ending in AA through AI.We require you to provide us with the following information to ensure plug and play operation with your vehicle, no additional programming required:Vehicle identification number (VIN)The current odometer reading displayed on your instrument clusterYour current PCM part number (This is printed on the part label that says, “Authorized Software Update”)Please include the required programming information in the “Message to seller” comment box during checkout or send us a message on eBay using the “Contact seller” button in this listing.Don’t need the item programmed because your business has the ability to do so? No problem. Just let us know and we’ll ship this item unprogrammed.If we do not receive your VIN, odometer reading and PCM part number or a message requesting this item to be sent unprogrammed within one business day of your purchase, your order will be canceled and a refund will be issued. So please make sure you have all of the required information ready when you make your purchase.