FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Home >> Chevy Truck >> 1993 >> Suburban 1/2 Ton 2WD V8-350 5.7L >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> Manufacturer Code Charts >> DTC 55

DTC 55

Faulty ECM/PCM
- Be sure ECM/PCM grounds are OK.
- Be sure PROM/MEM-CAL is properly latched.
- If OK replace ECM/PCM.

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