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Home >> GMC >> 1983 >> Pickup K2500, 5.7 M >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor Tests W/Codes >> Code 51 - Faulty Prom

Code 51 - Faulty Prom

PROM is either installed incorrectly, defective, or wrong part number. Check for proper installation and application. If ok, replace PROM.

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