Conditions for Running the DTC

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.

C0055 00

The ignition is ON.
Ignition voltage is greater than 9.5 volts.

C0055 5A

The ignition is ON.
Ignition voltage is greater than 9.5 volts.
The brake pedal is not pressed.
A DTC is not set for the other wheel speed circuit on the same axle.