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Home >> Oldsmobile >> 1986 >> Toronado >> Repair and Diagnosis >> Engine Performance >> System >> BCM System, Part II >> ECM Trouble Code Charts - Trouble Shooting >> Code B420, Relay Circuits (Riviera Only) >> Note On INTERMITTENTS:

Note On INTERMITTENTS:

Since all 4 groups of relays can cause an intermittent condition, see NOTE ON INTERMITTENTS for each of the 4 groups of relays.

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