RLK

Some kind of pressure relief valve within the pump sticks/fails causing low or no oil pressure how nice. # PIP 4158F

LMB-C6

Hmmm, seems to affect '07 to '13. Anyone have the details?

LINK

RicK T

One discussion of several:

http://forums.corvetteforum.com/c6-t...-pressure.html


TSB (PIP4158C): Note it was "C" back in 2011.

http://forums.corvetteforum.com/1578265354-post5.html

LMB-C6

Thanks

DAFFYDRUNK

As far as I've read, this has been an ongoing problem since the first LS1s. I think what can happen is debris gets caught in the pressure relief valve on the oil pump and it can't close so you lose oil pressure to the rest of the motor. More prone to happen, for example, if you recently did a cam swap.

ProfessorDeath

Had to replace my oil pump in my 1998 Z28 a couple times. Never really figured out why it failed. Perhaps I've just learned.

RLK

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