99 Jeep Grand Cherokee 4.0L ECU ECM PCM Engine Computer 56041423AH 423 PROG 7736

Key Features:
  • Brand: Mopar
  • Manufacturer Part Number: 56041423AH
  • Interchange Part Number: 56041423AA, 56041423AB, 56041423AC, 56041423AD, 56041423AE, 56041423AF, 56041423AG, 56041423AH, module controller control unit programmed, R6041423AH


Out of stock
SKU 227736


Engine computer from a 1999 Jeep Grand Cherokee. The vehicle was running with no check engine light. The case and connectors have no broken parts. The pictures are of the actual part you will receive. 

Fits 1999 Jeep Grand Cherokee with 4.0L engine and part number R6041423AH or 56041423 ending in AA through AH.

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 cluster
  • Your 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.


Weight 5.00 lbs
Dimensions 12 × 8 × 6 in

Manufacturer Part Number

Interchange Part Number

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Item Compatibility List

Year Make Model Trim Engine Notes
1999 Jeep Grand Cherokee Laredo Sport Utility 4-Door 4.0L 242Cu. In. l6 GAS OHV Naturally Aspirated with matching part number
1999 Jeep Grand Cherokee Limited Sport Utility 4-Door 4.0L 242Cu. In. l6 GAS OHV Naturally Aspirated with matching part number