97 and up Lift Pump???

[CareyWeber]

My 97 has a relay from the factory to run the lift pump. I know the relay is used during the start cycle, and can be used to prime the fuel filter.

I know in the older trucks the OPS powered the lift pump, and that is why a relay increases the lift of the OPS.

My question is does the Oil Pressure Switch (OPS)also trigger the relay to power the lift pump (factory relay on the >=97 trucks) or when the OPS is used does it send all the juice to the lift pump?

Carey

[Turbine Doc]

Carey go read too much pressure post I think 97 works like 98 I posted how it works description from GM manual earlier

[CareyWeber]

Thanks Tim