COMPATIBILITY
This Powertrain Control Module (PCM) is a genuine replacement for all 2003 Chevrolet Silverado SS models with the 6.0L LQ9 engine and 4L65E transmission. The GM part number for this ECU is 28042802 and the hardware code is 12589162. Enthusiasts commonly refer to this module as a P59 Powertrain Control Module (PCM).
VIN PROGRAMMING
Once we receive your order, we will pull a used, but inspected and tested, ECU from our inventory and program it with the latest GM calibration for a 2003 Chevrolet Silverado SS with the 6.0L LQ9 engine and 4L65E transmission. IMPORTANT! If this ECU will be installed in a 2003 Chevrolet Silverado SS, you must provide us with your Vehicle Identification Number (VIN) for compatibility. You may provide a VIN during checkout as a note on the order or by email immediately following your purchase.