Haltech Elite 750 ECU 2003-gmc-sierra-3500-esi4005323 2 sensors have a laser-etched

2 sensors have a laser-etched

New Low Level Fluid IndicatorA more accurate

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Haltech Elite 750 ECU 2003-gmc-sierra-3500-esi4005323 2 sensors have a laser-etchedElite 750 ECU, Outputs: Up to 6 injector and 6 ignition., Suits: Universal 1 12 cylinder or 2 3 rotor applications.; Includes: Elite 750 ECU, Waterproof USB cap, USB programming cable and software CD.