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Home >> GMC >> 1983 >> Caballero Base, 3.8 9, 350C/MX2 >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor Tests W/Codes >> Code 55: O2 CKT Volt Hi Or Wrong, Volt On ECM Term. 21

Code 55: O2 CKT Volt Hi Or Wrong, Volt On ECM Term. 21

Fig 1: Code 55: O2 Ckt Volt Hi Or Wrong, Volt On ECM Term. 21 Flow Chart
G290
Fig 2: Code 55: O2 Ckt Volt Hi Or Wrong, Volt On ECM Term. 21 Flow Chart
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