Circuit/System Description
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
The line pressure control solenoid is part of the control solenoid valve assembly and is not serviced separately. The line pressure control solenoid regulates the transmission fluid line pressure when the engine is running. The transmission control module varies the current to the normally high line pressure control solenoid valve from 0.1 A for maximum line pressure, to 1.1 A for minimum line pressure. This is accomplished by varying the current in order to obtain the desired line pressure in kPa (psi).