GM Service Manual Online
For 1990-2009 cars only

Inadequate Lubrication for Chevrolet Tahoe - 2WD 2007

Checks

Cause

Pressure Regulator Valve (231)

Valve is stuck in a high demand position.

Pump Body (206)

Cross channel leakage

Gasket (6)

Damaged

Oil Transfer Hole Cup Plug

Plug is leaking