LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 484 (Disc Brakes) >> Description & Operation >> Vacuum Supplemental Brake Assist System Operation >> Vacuum Augment (Engine Off) Mode

Vacuum Augment (Engine Off) Mode

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, and 2003 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

If the engine ON state changes to OFF after reaching 5 MPH the SBA activates the pump for up to 60 seconds. After 60 seconds the pump shuts off and the SERVICE BRAKE BOOSTER message is displayed. If the engine ON signal is detected or the vehicle slows to below 5 MPH before the pump times out, the pump shuts off and no message is displayed.

scientia non olet · About LEMON Manuals