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Home >> GMC >> 1996 >> Forward Control 4.3 W >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Controls - Tests W/Codes - 4.3L) >> Trouble Code Charts >> Code 51, Prom Error (Faulty Or Incorrect Prom)

Code 51, Prom Error (Faulty Or Incorrect Prom)

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Ensure all pins are fully inserted in socket. If okay, replace PROM/MEM-CAL, clear memory and recheck. If Code 51 reappears, replace control module.

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