SRX AWD V8-4.6L VIN A (2004)
Brake Bleeding: All Technical Service Bulletins
Brakes - Low Brake Pedal/Air in System
Bulletin No.: 03-05-25-009A
Date: July 28, 2004
INFORMATION
Subject:
Service Procedure Guideline for Low Brake Pedal/Air In System Conditions
Models:
2004 Cadillac CTS
2004 Cadillac SRX
Supercede:
This bulletin is being revised to update the title line with the word "brake". Please discard Corporate Bulletin Number 03-05-25-009 (Section 05 -
Brakes).
Important:
Please refer to the following information before replacing or reprogramming any brake components.
This bulletin is being issued to emphasize the importance of following the proper repair instructions in order to eliminate unnecessary part replacements
and comeback repairs.
If low brake pedal height or air in the brake system occurs to the above listed vehicles, the following service procedure guideline should be performed.
Important:
In order to achieve the proper results, the required tools and recommended procedures must be used.
Tools Required
^
Scan Tool with software version 23.006 or greater
^
J 26532 Diaphragm Type Brake Pressure Bleeder (Ball)
^
J 35589-A Master Cylinder Bleeder Adapter
Important:
Do NOT use vacuum sources at the bleeders when performing the following procedures. Use of vacuum during the bleed procedures will not
remove all of the air from the brake system.
1.
Perform a pressure bleed of the base brake system.
2.
Perform the Anti-Lock Brake System (ABS) Automated Bleed Procedure.
3.
If, for any reason, it becomes necessary to perform a brake pedal position relearn calibration, refer to Brake Pedal Position Sensor Calibration
Description and Operation, located in the Lighting Systems sub-section of the Service Manual.
The ABS Automated Bleed Procedure uses a scan tool to cycle the system solenoid valves and run the pump in order to purge any air from the
secondary circuits. These circuits are normally closed and are only opened during system initialization at vehicle start up and during ABS
operation. The automated bleed procedure opens these secondary circuits and allows any air trapped in these circuits to flow out toward the brake
corners.
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