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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 146 (Suspension Control System - Suspension Leveling - ALCM/ESCM) >> Diagnostic Information and Procedures >> Rear of Vehicle High (With F55) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Engine running, command the exhaust valve ON and OFF with a scan tool. Listen for the exhaust valve clicking.