Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum - View Single Post - is the ticking noise under the hood the lifters
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Old 11-23-2010, 11:24 AM
BigRobSA's Avatar
BigRobSA BigRobSA is offline
2007 Chevy TrailBlazer SS
Silverstone Metallic 6.0L LS2 V8 AWD
Join Date: Feb 2007
Location: Cedar Rapids, Iowa
Posts: 180
LS engines are notorious for valvetrain noise.

When you cam it, or go with headers and a converter, it's even louder.

Sounds different than rod knock, thank God.
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