Cobalt L4-22L (2008) - Brakes: Front Brake Noise/Inner Pad Wear/Pulsation
Brake Pad: All Technical Service Bulletins
Brakes - Front Brake Noise/Inner Pad Wear/Pulsation
TECHNICAL
Bulletin No.: 08-05-23-003B
Date: July 21, 2008
Subject:
Front Brake Noise, Brake Pulsation, Front Brake Inner Pad Wear (Replace Front Brake Pads and Add Splash Shields)
Models:
2005-2008 Chevrolet Cobalt (Excludes SS Models)
2006-2008 Chevrolet HHR (Excludes SS Models)
2006 Pontiac Pursuit (Canada Only)
2007-2008 Pontiac G5
Supercede:
This bulletin is being revised to clarify the vehicles involved in the model and parts information. Please discard Corporate Bulletin Number
08-05-23-003A (Section 05 - Brakes).
Condition
Some customers may comment on a brake noise and/or pulsation on brake apply. This condition can be more frequent if the customer resides or travels
on dirt/gravel roads and usually occurs within 11,300 km (7,000 mi) to 16,000 km (10,000 mi) intervals. Upon investigation, the technician may find that
there is considerable difference between the front brake outer and inner pad thickness.
Cause
This condition may be due dust, dirt, and debris intruding between the inner brake pad and rotor.
Correction
Road test the vehicle and confirm that the brake noise and/or pulsation is coming from the front brakes. If it is determined that the noise is coming from
the front brakes and there is a measurable difference between the outer and inner pad thickness, remove the front wheel bearing/hub assembly following
published SI procedures, remove the bearing/hub-to-steering knuckle spacer and replace the spacer with a splash shield on each side. Replace the front
brake pads and follow the procedures outlined in Service Bulletin 00-05-22-002J for servicing the disc brake rotors.
Parts Information
Warranty Information
