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Home >> Chevrolet >> 2010 >> Traverse LT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 420 (Hydraulic Brake System) >> Diagnostic Information and Procedures >> DTC P258A-P258D: Vacuum Pump >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ Terminal 85 P258A P258A, P258C - P258B
B+ Terminal 30 1 1 - -
Control Terminal 86 P258C P258A, P258C P258D P258B
Control Terminal 87 1 1 - -
Brake Booster Pump Ground - 1 - -
1. Brake Booster Pump Malfunction