Posting here 'cause I'm not a member of an LS-specific forum.
Friend has an '09 Silverado with low oil pressure at the rear of the engine--sensor and dash gauge shows ~20 psi when warm at idle, in neutral. Sets an oil pressure code. My friend replaced the sensor and the screen under the sensor. No change.
We tested oil pressure with a mechanical gauge at the lower left front oil port; my gauge shows 50 psi when the dash gauge shows 20.
Is there a common reason why the LS engine would lose half of it's oil pressure from front to rear?
Friend has an '09 Silverado with low oil pressure at the rear of the engine--sensor and dash gauge shows ~20 psi when warm at idle, in neutral. Sets an oil pressure code. My friend replaced the sensor and the screen under the sensor. No change.
We tested oil pressure with a mechanical gauge at the lower left front oil port; my gauge shows 50 psi when the dash gauge shows 20.
Is there a common reason why the LS engine would lose half of it's oil pressure from front to rear?