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Squeak Noise On Brake Apply - keywords booster cylinder disc drum fluid front master rub

Subject:Squeak Noise On Brake Apply

Models:2008 Buick Enclave
2008-Chevrolet Malibu
2008-Pontiac G6
2004-2007 Buick Rainier
2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT
2007-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2004-2006 Chevrolet SSR
2004-2008 Chevrolet Trailblazer, Trailblazer EXT and Trailblazer SS
2005-2007 Chevrolet Silverado Classic with RPO JF3 or JF7
2004-2008 GMC Envoy, Envoy XL and Envoy XUV
2007-2008 GMC Acadia, Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL
2005-2007 GMC Sierra Classic with RPO JF3 or JF7
2007-2008 Saturn Outlook & Aura



This PI was superseded to update Recommendation/Instructions. Please discard PIT3779F.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some customers may comment on a squeak noise when the brake pedal is applied or when released. This noise is normally heard when the brake pedal is slowly applied with the engine on or off, but can occur when the brake pedal is released. The noise may be isolated to the master cylinder area.

Recommendation/Instructions:

To correct this concern, remove as much of the old brake fluid from the master cylinder as possible and refill with a modified DOT 3 brake fluid, P/N?88862806 (in Canada, use P/N?8886207). Depress and release the brake pedal five times to allow the new fluid to enter the system.

Note: It is not necessary to flush the complete brake system with the modified dot 3 fluid to correct this noise.

Part Information

Part Number

Description

Qty

88862806 (In Canada 88862807)

Brake Fluid, DOT 3

1

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.