Service brakes, hydraulic (Cadillac, Hummer and GMC and 1 more)
Vehicle recall 04V-045. NHTSA received GENERAL MOTORS CORP.’s report on Feb 4, 2004.
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The short answer
NHTSA received GENERAL MOTORS CORP.’s report on Feb 4, 2004. Copied from NHTSA on Oct 23, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
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.
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.
NHTSA, Recalls flat file before 2010. Released Oct 23, 2026. Updated daily.
- NHTSA’s part: Service brakes, hydraulic.
What should you do?
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.
NHTSA, Recalls flat file before 2010. Released Oct 23, 2026. Updated daily.
- How to reach the firm: 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).
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 68,875 vehicles potentially involved, across everything this recall names.
NHTSA, Recalls flat file before 2010. Released Oct 23, 2026. Updated daily.
- Cadillac Escalade EXTand 2003 and 2004, before the model years listed here
- Hummer H2and 2003 and 2004, before the model years listed here
- GMC Yukon XLand 2003 and 2004, before the model years listed here
- Cadillac Escaladeand 2003 and 2004, before the model years listed here
- Cadillac Escalade ESVand 2003 and 2004, before the model years listed here
- GMC Sierraand 2003 and 2004, before the model years listed here
- GMC Savanaand 2003 and 2004, before the model years listed here
- Chevrolet Suburbanand 2003 and 2004, before the model years listed here
- Chevrolet Silveradoand 2003 and 2004, before the model years listed here
- Chevrolet Expressand 2003 and 2004, before the model years listed here
- Chevrolet Avalancheand 2003 and 2004, before the model years listed here
- Chevrolet Tahoeand 2003 and 2004, before the model years listed here
- GMC Yukonand 2003 and 2004, before the model years listed here
Who is recalling it?
- Made by GENERAL MOTORS CORP..
NHTSA, Recalls flat file before 2010. Released Oct 23, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- This recall names only model years before 2015, which have no pages here. Your VIN, at NHTSA, says which recalls are open on a vehicle.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file before 2010 (FLAT_RCL_PRE_2010).
Released Oct 23, 2026 and checked Oct 23, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 23, 2026.