2006 - 2012 Corvette: Service Bulletin: Rattle/Tapping Type Noise Heard Under Hood
Bulletin #: #08-06-01-019A
Subject: Rattle/Tapping Type Noise Heard Under Hood (Diagnose and Replace Engine Oil Tank Transfer Tube Seal (O-Ring))
2006-2012 Chevrolet Corvette Z06
2009-2012 Chevrolet Corvette ZR1
2010-2012 Chevrolet Corvette Grand Sport (with RPO Z52)
Equipped with 6.2L or 7.0L Engine (VINs R, T, W, E - RPOs LS9, LS3, LS7)
Some customers may comment on a rattle or tapping type noise that is heard under the hood at just above idle, usually 1200 to 2200 RPM. In some cases, this noise may also be heard on the inside of the vehicle and be more pronounced on the passenger side.
This noise may be caused by the internal transfer tube in the engine oil tank hitting the inside of the tank cover. The seal (O-ring) that secures the tube in place may split and slide down the tube allowing the tube to be loose.
Seal part number: 24576940
Labor Time operation number: J7537*
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