TrailBlazer 2WD L6-4.2L VIN S (2003)
Disclaimer
Service Procedure
Tools Required (for brake pipe replacement, if required)
J 29532 Diaphragm Type Brake Pressure Bleeder, or equivalent
J 35589-A Brake Pressure Bleeder Adapter
The following procedure provides instruction for inspecting, and if necessary, replacing the brake pipe located between the left front brake caliper flex
hose and the ABS modulator.
Inspection Procedure
1.
Place the vehicle on a suitable hoist and turn the steering wheel to the full right.
2.
Open the hood.
3.
Raise and support the vehicle.
4.
Clean and remove any dirt from the left front brake pipe and flare nut (3) where it connects to the left front caliper flex hose (4).
5.
Carefully inspect the brake pipe where it goes into the flare nut for a tooling mark (1) as shown above. The mark may be located at any point
around the circumference of the pipe and a mirror and flashlight may be required to see it. There will NOT be any of the spiral lines or grooves (2)
in the tooling mark.
^
If the tooling mark IS present (1), then the brake pipe does NOT need to be replaced. Lower the vehicle and install the GM Recall
Identification Label.
