RETURNS NOT ACCEPTED for: Pigtails, Harnesses, or Extensions. These are custom built per order. Please ask any questions before ordering.


E40 Engine Control Module (ECM) | 2006 Chevrolet Trailblazer SS 6.0L LS2 Engine 4L70E Transmission | GM 12604791 | Hardware Code 12596679

Part Number: AWP-5022
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This Engine Control Module (ECM) is a genuine replacement for all 2006 Chevrolet Trailblazer SS models with the 6.0L LS2 engine and 4L70E transmission. The GM part number for this ECU is 12604791 and the hardware code is 12596679. Enthusiasts commonly refer to this module as a E40 Engine Control Module (ECM).

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 2006 Chevrolet Trailblazer SS with the 6.0L LS2 engine and 4L70E transmission. IMPORTANT! If this ECU will be installed in a 2006 Chevrolet Trailblazer 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.