Component
SERVICE BRAKES, HYDRAULIC
Manufacturer
GENERAL MOTORS CORP.
What Happened
The hydro-boost relief valve in your vehicle is a critical part of the brake system that helps you stop safely. In some cases, the valve's seal might not be made to the right specifications.
Risk if Unfixed
If the seal fails, you might need to press the brake pedal a bit harder to stop your vehicle as smoothly as before. This could make driving a bit more challenging, especially if you're driving uphill or in heavy traffic.
Free Fix
Your dealer will replace the faulty valve for free, so you'll get a safe and reliable brake system back. Schedule the repair as soon as you get the recall notice.
Show original NHTSA language
Original — What Happened
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.
Original — Risk if Unfixed
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.
Original — 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.
View full recall details →
Repairs are free at any authorized dealer. Find a dealer →