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  1. [Vectra C] [02-08] No Engine Light, but trick shows old codes?

    Cavalier, Calibra, Vectra, Signum, Sintra & Insign
    Hey folks. Only learnt the trick recently, works like a charm, found the fault, replaced and now works amazingly well. Engine Management light is gone, however, did the trick this morning just for a laugh....I get the old codes flashing, even though the fault is fixed and when I start the car...
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