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1997 Cadillac Seville STS Question: trying to learn monitors for inspection have catalytic , O2 senser ,O2 heater



duker2850, Springville, NY, October 03, 2013, 22:32

have driven for over a week 250 miles or more wont learn those three monitors any tricks? we replaced egr valve now no check engine light and drove with scanner on, O2 readings for all 4 sensers appear good

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