Spectrum Series II ECM 1326651


Spectrum Series II ECM 1326651
Spectrum Series II ECM 1326651
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Calibrated Spectrum ECM P/N 1326651
  • Series: II
  • Engine Make: GM
  • Engine: 4.3L
  • Fuel: Gas
  • Model Year: 2004-2006
  • Truck: Mitsubishi

Each Calibration and ECM is unique and must match the fuel system. ECM blanks and calibrations are not interchangeable. A mismatched or incorrect ECM will result in the failure of both the fuel system and engine to operate properly.


Unprogrammed ECM blanks are still available, however, the .mot files (also referred to as the software cal, or calibration files necessary to reprogram the ECM) are only available from the OEM.

The calibration programmed on the ECM will always be the latest revision.



Inventory Status: On backorder - you may still order this product