Circuit Description

WARNING: This page does not describe the selected car, but rather 54 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Savana Special. However, it is still accessible from the selected car via links, so may be relevant.

When left front isolation solenoid is needed, EBCM will ground solenoid circuit to energize coil within solenoid. This will close isolation valve by magnetic force created by solenoid coil.

Conditions for setting DTC:

ANTI-LOCK indicator light check complete.
Low voltage on EBCM solenoid driver circuit when expected to be high (solenoid not energized).