Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Note: This test should only be performed if brake fluid is not low.
- With the ignition OFF, disconnect the brake fluid level switch connector.
- With the ignition ON, use a scan tool to observe the Brake Fluid Switch parameter in Instrument Panel Cluster.
- If the Brake Fluid Switch parameter is OK, replace the brake fluid level switch.
- If the Brake Fluid Switch parameter is Low, repair short to ground in signal circuit.
- If all circuits test normal replace the IPC.