CHEVROLET SILVERADO 2004: SERVICE BRAKES, HYDRAULIC

General Information

NHTSA Campaign ID Number: 04V045000

Make Model Year
CHEVROLET SILVERADO 2004
Date Owners Notified Date Received by ODI Date Added to Database
2004-06-18 2004-02-04 2004-02-06

Production Dates: 2003-05-01 - 2003-06-30

Manufacturers Involved: General Motors, LLC

Manufacturer Campaign Number: 04004

Component: SERVICE BRAKES, HYDRAULIC

Potential Number Of Units Affected: 68875

Report Initiator: MFR MFR Report

Regulation Part Number: 571

Federal Motor Vehicle Safety Standard Number: 135

Summary

CERTAIN SPORT UTILITY VEHICLES, PICKUP TRUCKS, AND PASSENGER VANS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 135, "PASSENGER CAR BRAKE SYSTEMS." SOME OF THESE VEHICLES WERE PRODUCED WITH AN OUT-OF-SPECIFICATION BRAKE HYDRO-BOOST HOUSING RELIEF VALVE BORE.

Consequence

CONSEQUENTLY, THE VALVE O-RING SEAL MAY FRACTURE. STEERING EFFORTS MAY BE SLIGHTLY INCREASED WHILE BRAKING OR PARKING. UNDER CERTAIN DRIVING CONDITIONS, A FRACTURED SEAL MAY REQUIRE A SLIGHT INCREASE IN THE APPLIED BRAKE PEDAL EFFORT TO ACHIEVE THE SAME VEHICLE DECELERATION RATE AS PRIOR TO THE SEAT FRACTURE.

Remedy

DEALERS ARE TO REPLACE THE HYDRO-BOOST RELIEF VALVE. THE RECALL BEGAN ON JUNE 18, 2004. OWNERS SHOULD CONTACT CADILLAC AT 1-866-982-2339; CHEVROLET AT 1-800-630-2438; GMC AT 1-866-996-9463; OR HUMMER AT 1-866-486-6376.

Notes

GM RECALL NO. 04004.CUSTOMERS CAN ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT '1-888-327-4236'.