2002-03 Chevrolet Avalanche Review, Rating, Prices: Consumer Guide�

2002-03 Chevrolet Avalanche Review, Rating, Prices: Consumer Guide�: "Engine noise: Due to corrosion of the knock sensor on the rear bank, the 5.7-litre engine may suffer from spark knock (ping) that gets worse on hard acceleration, illuminating the 'check engine' light. "