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Home >> Chevrolet >> 1989 >> Corvette 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 5.0L/5.7L PFI Tests W/Codes >> Diagnosis & Testing >> Code 55: ECM Error

Code 55: ECM Error

Ensure ECM grounds are okay. If okay, replace ECM. Clear codes and confirm "closed loop" operation and no "SERVICE ENGINE SOON" light.

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