Pulsation/Vibration When Applying Brakes (Repair Rotor Variation and Install New Front Brake Shields). Buick Terraza Ext. 2007

Subject:

Pulsation/Vibration When Applying Brakes (Repair Rotor Variation and Install New Front Brake Shields)

Models:

2005-2007 Buick Terraza

2005-2007 Chevrolet Uplander

2005-2007 Pontiac Montana SV6

2005-2007 Saturn Relay

Condition

Some customers may comment on a pulsation/vibration felt when applying the brakes.

Cause

The brake pads and rotors may wear uneven due to debris.

Correction

Repair the rotor variation and install new front brake shields using the steps below:

Verify that the condition is from the front brakes.
Correct the rotor variation by referring to the Brake Warranty Service and Procedures Bulletin Number 00-05-22-002 or later.

Important: Measure Lateral Run Out (LRO), brake rotor thickness specification and document the information on the repair order. Include the warranty claim code and ONLY claim this Special Labor Operation H9725* for this bulletin.

Remove the front wheel bearing/hub. Refer to Front Wheel Bearing and Hub Replacement in SI.
Remove and discard the old front wheel speed sensor bracket and old wheel bearing/hub bolts.

Install the new front brake shield (1).

Important: The wheel bearing/hub bolts must be replaced.

Install the front wheel bearing/hub. Refer to Front Wheel Bearing and Hub Replacement in SI.
Repeat this entire procedure on the opposite side.
Verify that the condition has been fixed.

Parts Information

Part Number	Description	Qty
19167950	Shield, Front Brake-LH	1
19167253	Shield, Front Brake-RH	1
18022052	Bolt, Front Wheel Hub	6

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation	Description	Labor Time
H9725*	Remove Or Replace Front Brake Rotors, Brake Pads and Install New Front Brake Shields	1.7 hrs
Add	Front Brake Rotor Refinishing	0.4 hr (one) 0.9 hr (both)
*This labor operation is for bulletin use only. This number will not be published in the Labor Time Guide.