There are 12 owner-reported brakes complaints for the 2003 Hummer H2in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 15 MPH, THE BRAKE PEDAL WAS DEPRESSED AND WENT TO THE FLOORBOARD. THE CONTACT VEHICLE MOVED INTO THE INTERSECTION. THE CONTACT WAS ABLE BRING THE VEHICLE TO A STOP. THE CONTACT WAS ABLE TO MOVE THE VEHICLE TO SAFETY. THE CONTACT INSPECTED THE VEHICLE HIMSELF AND FOUND THAT THE BRAKE FLUID WAS LEAKING FROM THE BRAKE MASTER CYLINDER. THE VEHICLE WAS NOT TAKEN TO THE DEALER TO HAVE A DIAGNOSTIC TEST PERFORMED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 160,000.
TL* THE CONTACT OWNS A 2003 HUMMER H2. AFTER COMING TO A STOP, THE BRAKE PEDAL SUDDENLY TRAVELED TO THE FLOORBOARD. THE CONTACT PULLED THE VEHICLE INTO A PARKING LOT NEARBY AND NOTICED BRAKE FLUID LEAKING OUTSIDE THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO A CERTIFIED MECHANIC WHO DIAGNOSED THAT THE BRAKE LINE WAS RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 74,000. UPDATED 05/23/2017*JS UPDATED 06/08/17*LJ *AS
FAILURE OF BRAKING SYSTEM DUE TO COMPLETE EROSION OF BRAKE LINES. EXTREMELY DANGEROUS SAFETY ISSUE ALONG WITH VERY COSTLY REPAIRS FOR A VEHICLE CONSUMERS BELIEVED TO BE "WELL-MADE". I CAN'T UNDERSTAND WHY THE SUBSTANDARD DEFECTIVE PARTS AND ASSOCIATED REPAIRS HAVE NOT BEEN A DETERMINED AS A RECALL. BASED UPON THE AMOUNT OF COMPLAINTS FOR THIS PROBLEM, IT IS OBVIOUS THAT THE CONSUMERS THAT PAID FOR A "HIGH-END" VEHICLE WERE DUPED!!! *TR
TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THAT ALL OF THE BRAKE LINES WERE RUSTED OUT. WHILE TOWING A THIRTY FOOT BOAT, THE PARKING BRAKE ABNORMALLY TRAVELED ALL THE WAY TO THE FLOORBOARD. AN INDEPENDENT MECHANIC REPLACED ALL OF THE BRAKE LINES. THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 85,000.
BRAKE PEDAL WENT TO THE FLOOR UPON BRAKE APPLICATION WITHOUT PRIOR WARNING. UPON INSPECTION, FOUND BRAKE LINES CORRODED THROUGH AND LEAKING JUST UNDER THE DRIVER'S SEAT. COST TO REPAIR WILL BE SIGNIFICANT. *TR
BRAKE LINES COMPLETELY RUSTED CAUSING A CATASTROPHIC FAILURE IN BRAKING. 2003 H2 HUMMER . FOR THE LIFE OF ME , I CANT BELIEVE THERE IS NO RECALL FOR THIS !!! *TR
I WAS DRIVING DOWN THE HIGHWAY INTERSTATE 70 IN MARYLAND AND WENT TO APPLY MY BRAKES . AS I APPLIED THE BRAKES , THE TRUCK PULLED HARD TO THE RIGHT ,AND THE BRAKE PEDAL WENT TO THE FLOOR . IF I WOULD NOT HAVE SWERVED ONTO THE MEDIAN , I WOULD HAVE RAN INTO THE BACK OF ANOTHER VEHICLE . AFTER STOPPING , I LOOKED UNDER THE VEHICLE AND OBSERVED A PUDDLE OF BRAKE FLUID ON THE GROUND ,AND THE FRONT SUSPENSION WAS COVERED IN BRAKE FLUID. AFTER FURTHER INSPECTION, I NOTICED THAT ALL THE BRAKE LINES WERE CORRODED. GM STATES THAT YOUR VEHICLE CAN STILL STOP IF YOU LOSE ONE OF THE BRAKE LINES . IN MY SITUATION , I FOUND THIS TO BE A FALSE STATEMENT . THIS IS A VERY DANGEROUS SITUATION ,AND I WAS VERY SURPRISED WHEN I TOOK THE VEHICLE INTO A CERTIFIED GM DEALERSHIP AND FOUND THAT THEY WOULD NOT DO ANYTHING ABOUT THIS ISSUE. THEY OFFERED A VOUCHER FOR 1000 TOWARDS A NEW VEHICLE . I OWN A 1968 CAMARO THAT IS ALL ORIGINAL ,AND I DO NOT HAVE ANY RUST ISSUES WITH THE BRAKE LINES . HOW IS THIS POSSIBLE THAT A CAR 35 YEARS OLD DOES NOT HAVE THIS PROBLEM ? AND EVEN MORE CRAZY , THAT GM TURNS A BLIND EYE TO THIS DANGEROUS ISSUE . NEEDLESS TO SAY, I WILL NOT EVER BUY ANOTHER GM PRODUCT ! *TR
TL* THE CONTACT OWNS A 2003 HUMMER HUMMER H2. THE CONTACT STATED THAT WHILE DRIVING 35 MPH AND DEPRESSING THE BRAKES, THEY WOULD GO STRAIGHT TO THE FLOOR AND THE VEHICLE WAS UNABLE TO STOP. THE DRIVER STOPPED THE VEHICLE BY DOWNSHIFTING THE TRANSMISSION AND APPLYING THE EMERGENCY BRAKE. THE VEHICLE WAS LATER TOWED TO A DEALER DIAGNOSIS. AFTER DIAGNOSIS THEY ADVISED HIM THAT THE BRAKE LINES WERE RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED FOR RUSTED BRAKE LINES. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND CURRENT MILEAGES WERE APPROXIMATELY 88,000. THE VIN WAS UNAVAILABLE.
I WAS EXITING THE HIGHWAY AND PUSHED THE BRAKE PEDAL TO SLOW THE VEHICLE, EVERYTHING WAS FINE. WHEN I WENT TO STOP THE PEDAL WENT TO THE FLOOR. I WAS ABLE TO PUMP THE BRAKES AND THE VEHICLE STOPPED. WHEN I WAS CHECKING TO SEE WHAT THE PROBLEM WAS I NOTICED ALL THE METAL BRAKE LINES ARE CORRODED AND ONE WAS LEAKING. *TR
AFTER VISITING PARADISE CHEVROLET FOR THE SERVICE OF GM HUMMER H2, 2003, IT WAS BROUGHT TO MY ATTENTION THAT THE HYDRO BOOSTER ASSEMBLY AS WELL AS THE PITMAN ARM ASSEMBLY NEED TO BE REPLACED. AFTER FURTHER INVESTIGATION I FOUND THAT THESE PART WERE ON RECALL FROM HUMMER (I HAVE PROOF OF THE RECALL). ON OCTOBER 11, 2011, AT APPROXIMATELY 2:20 P.M., I CALLED GENERAL MOTORS HUMMER DIVISION AS THE NOTICE INSTRUCTED THE CUSTOMER TO DO SO, THEIR CONTACT NUMBER FOR HUMMER IS 1 (866) 436-6375. I CONTACTED GM'S HUMMER DIVISION AT THIS NUMBER, EXPLAINED THE SITUATION AND THE CUSTOMER REPRESENTATIVE SAID THERE WAS NO SUCH RECALL EVEN AFTER EXPLAINING WITH PROOF OF SAME. I THEN ASKED TO SPEAK WITH A SUPERVISOR I WAS REFUSED, ASKED FOR A MANAGER I WAS REFUSED, ASKED FOR CORPORATE TELEPHONE NUMBER. I WAS LEFT ON HOLD FOR OVER 15 MINUTES AND FINALLY HUNG UP AFTER REALIZING THAT THE CUSTOMER SERVICE REP. WAS NEVER GOING TO COME BACK ON THE TELEPHONE LINE. GM IS REFUSING TO HONOR THEIR OWN RECALL, I NEED HELP PLEASE, THANK YOU! *KB
TL* THE CONTACT OWNS A 2003 HUMMER H2. WHILE BARELY MOVING AT LESS THAN 1 MPH, THE CONTACT EXPERIENCED A FAILURE IN THE BRAKING SYSTEM DUE TO THE RUSTED BRAKE LINES. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE HOSES AND CALIPERS WERE REPLACED. THE FAILURE MILEAGE WAS 28,071. THE CURRENT MILEAGE WAS 29,000. UPDATED 05/25/10*BF THE CONSUMER STATED THE ENTIRE UNDERCARRIAGE HAS RUSTED. UPDATED 05/28/10
MY 2003 HUMMER H2'S SERVICE BRAKES LIGHT KEEPS COMING ON ALONG WITH THE TRACTION CONTROL & ABS LIGHT, AND EVERY TIME I BRAKE IT SEEMS TO PULL ME ALL OVER THE ROAD. IT IS ALSO VERY HARD TO STOP IF I SUDDENLY HAVE TO BRAKE AND I AM SCARED I AM GOING TO HAVE A MAJOR COLLISION WITH ANOTHER VEHICLE OR ANOTHER OBJECT. THIS IS VERY DANGEROUS! THERE ARE MANY TIMES I HAVE APPLIED PRESSURE TO MY BRAKES AND IT DIDN'T EVEN SLOW AT ALL. I AM TERRIFIED TO DRIVE THIS VEHICLE AS I HAVE 3 VERY YOUNG CHILDREN USUALLY WITH ME & I BOUGHT THIS VEHICLE UNDER THE IMPRESSION THAT IT WOULD BE A SAFE VEHICLE FOR MY CHILDREN & MORE IMPORTANTLY MY 5 YEAR OLD DAUGHTER THAT HAD BRAIN SURGERY LESS JUST OVER A YEAR AGO THAT CANNOT HIT HER HEAD OR BE IN A MINOR CAR CRASH BECAUSE HER SKULL MAY COME APART AND KILL HER INSTANTLY , THIS IS THE VERY REASON I BOUGHT THIS BIG, ROOMY, GAS GUZZLER TO BEGIN WITH, TO GIVE MY CHILD ENOUGH ROOM IN A MINOR CAR CRASH TO NOT HIT HER HEAD BECAUSE THE VEHICLE DID NOT HAVE ENOUGH ROOM OR SHE WAS TOO COMPACTED IN A SMALLER SUV AND I AM FINDING OUT I MIGHT HAVE BEEN BETTER OFF WITH ANOTHER SMALLER VEHICLE. I HAVE HAD NOTHING BUT PROBLEMS WITH THE SAFETY OF THIS VEHICLE, AND THIS WAS A VERY BAD DECISION TO BUY THIS VEHICLE AND NOW I HAVE NO OPTIONS TO TRADE IT IN RIGHT NOW BECAUSE I HAVE TO MUCH IN IT. PLEASE DO SOMETHING ABOUT THIS BEFORE SOMEONE GETS KILLED OR SERIOUSLY INJURED BECAUSE I COULD NOT STOP MY VEHICLE AND YES, MY BRAKES ARE ALMOST NEW SO ITS NOT THE PROBLEM, NOR DOES IT HAVE LOW BRAKE FLUID. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026