FixVault

Possible Causes

Possible Causes 
(B29) BRAKE SWITCH NO. 1 SIGNAL SHORTED TO GROUND
(V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT OPEN
(V32) BRAKE SWITCH NO. 2 SIGNAL CIRCUIT SHORTED TO GROUND
(Z429) GROUND CIRCUIT OPEN
STOP LAMP SWITCH
POWERTRAIN CONTROL MODULE (PCM)
WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury. Refer to Electrical - Engine Systems/Battery System - Warning

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  .