Obviously, these valve-control-related issues, associated with insufficient valvespring pressure, are the reason why camshaft manufacturers offer valvespring upgrades. The obvious answer might seem to ...
VVT Cam Swap: Fear VVT and AFM no more! Swapping cams on an L99 is easy and good for tons of power OK, so you checked off the option box for the 6L80E automatic when ordering up your new fifth-gen.
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