NHTSA owner reports · September 18, 2026 snapshot.
Power Train complaints
11 reportsClear category filterMileage unknown · Nov 9, 2012
Power TrainService Brakes
TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THAT THE BRAKE PEDAL BECAME EXTREMELY LOOSE. THE CONTACT TOOK THE VEHICLE TO A MECHANIC AND WAS TOLD THAT THERE WAS A LEAK COMING FROM THE HYDRO BOOST THAT HAD BEEN RECALLED BY THE MANUFACTURER. THE CONTACT SPOKE WITH THE MANUFACTURER AND WAS TOLD THAT THE VEHICLE WAS NOT…
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TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THAT THE BRAKE PEDAL BECAME EXTREMELY LOOSE. THE CONTACT TOOK THE VEHICLE TO A MECHANIC AND WAS TOLD THAT THERE WAS A LEAK COMING FROM THE HYDRO BOOST THAT HAD BEEN RECALLED BY THE MANUFACTURER. THE CONTACT SPOKE WITH THE MANUFACTURER AND WAS TOLD THAT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER: 04V45000 (SERVICE BRAKE: HYDRAULIC). IN ADDITION, THE CONTACT STATED THAT THE TRANSMISSION WOULD SLIP AND THE VEHICLE WOULD EASILY SLIP OUT OF PARK WITHOUT THE KEY BEING IN THE IGNITION. THE CONTACT WAS TOLD BY THE DEALER THAT THE ELECTRONIC PARK LOCK NEEDED TO BE REPLACED, BUT THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER:03V075000(POWERTAIN: AUTOMATIC TRANSMISSION. THE FAILURE MILEAGE WAS UNKNOWN, BUT THE CURRENT MILEAGE WAS 37,000.
NHTSA ODI #10483863
43,000 miles · Dec 14, 2011
Power Train
TL* THE CONTACT OWNS A 2003 H2 HUMMER. WHILE DRIVING 1 MPH, THE FRONT DRIVER SIDE WHEEL FRACTURED AND DETACHED FROM THE VEHICLE. THE DEALER INFORMED THE CONTACT THAT THE DRIVE SHAFT AND SPINDLE WERE FRACTURED AND THE CASING BEHIND THE WHEEL WAS ALSO FRACTURED. THE CONTACT WAS AWAITING REPAIRS. THE MANUFACTURER WAS NOT NOTIFI…
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TL* THE CONTACT OWNS A 2003 H2 HUMMER. WHILE DRIVING 1 MPH, THE FRONT DRIVER SIDE WHEEL FRACTURED AND DETACHED FROM THE VEHICLE. THE DEALER INFORMED THE CONTACT THAT THE DRIVE SHAFT AND SPINDLE WERE FRACTURED AND THE CASING BEHIND THE WHEEL WAS ALSO FRACTURED. THE CONTACT WAS AWAITING REPAIRS. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE CURRENT AND THE FAILURE MILEAGES WERE 43,000. UPDATED 01/10/12*LJ
NHTSA ODI #10439963
130,000 miles · Sep 8, 2010
Power Train
TL*THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THE SHIFT LINKAGE FELL OFF CAUSING THE VEHICLE TO SHIFT OUT OF GEAR WHILE DRIVING 35 MPH. THE GEAR SHIFT WAS IN DRIVE AND SHIFTED ON ITS OWN INTO NEUTRAL GEAR. THE FRONT PUMP TRANSMISSION STOPPED WORKING AND FAILED TO SHIFT INTO GEAR. THE CONTACT WAS UNABLE TO DRIVE THE VE…
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TL*THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT STATED THE SHIFT LINKAGE FELL OFF CAUSING THE VEHICLE TO SHIFT OUT OF GEAR WHILE DRIVING 35 MPH. THE GEAR SHIFT WAS IN DRIVE AND SHIFTED ON ITS OWN INTO NEUTRAL GEAR. THE FRONT PUMP TRANSMISSION STOPPED WORKING AND FAILED TO SHIFT INTO GEAR. THE CONTACT WAS UNABLE TO DRIVE THE VEHICLE. THE VEHICLE WAS TOWED TO HIS RESIDENCE. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS CALLED AND INFORMED HER THAT THERE WERE NO RECALLS AND HER VEHICLE WOULD NOT BE REPAIRED. THEY ALSO INFORMED HER TO PAY FOR THE REPAIRS. THE FAILURE MILEAGE WAS 130,000.
NHTSA ODI #10354419
124,000 miles · Aug 24, 2010
Power Train
TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT WAS DRIVING 35-40 MPH WHEN THE TRANSMISSION BEGAN TO SLIP. THE CONTACT MOVED FROM THE ROADWAY AND SHUT OFF THE ENGINE. WHEN RESTARTING, THE VEHICLE WOULD NOT RESPOND TO LOWER GEARS. THE CONTACT WAS ABLE TO LOCATE A RECALL FOR THE FAILURE (NHTSA CAMPAIGN ID NUMBER: 03V075000- POW…
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TL* THE CONTACT OWNS A 2003 HUMMER H2. THE CONTACT WAS DRIVING 35-40 MPH WHEN THE TRANSMISSION BEGAN TO SLIP. THE CONTACT MOVED FROM THE ROADWAY AND SHUT OFF THE ENGINE. WHEN RESTARTING, THE VEHICLE WOULD NOT RESPOND TO LOWER GEARS. THE CONTACT WAS ABLE TO LOCATE A RECALL FOR THE FAILURE (NHTSA CAMPAIGN ID NUMBER: 03V075000- POWER TRAIN: AUTOMATIC TRANSMISSION) BUT WAS ADVISED BY BOTH THE DEALER AND THE MANUFACTURER THAT HIS VIN WAS NOT INCLUDED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 124,000.
NHTSA ODI #10351454
Mileage unknown · Jan 30, 2008
Power Train
2003 HUMMER WITH AN OIL LEAK. CONSUMER STATES THAT THE OIL LEAK WAS MINOR AND PUT THE VEHICLE IN THE SHOP. HE WAS INFORMED BY THE MECHANIC THAT THE TRANSFER CASE WAS WORN AND NEEDED TO BE REPLACED. THE PROBLEM OCCURRED AGAIN AND THE DRIVESHAFT NEEDED TO BE REPLACED.*KB THE CONSUMER WAS INFORMED THAT THE LENGTH OF THE PROPELLER …
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2003 HUMMER WITH AN OIL LEAK. CONSUMER STATES THAT THE OIL LEAK WAS MINOR AND PUT THE VEHICLE IN THE SHOP. HE WAS INFORMED BY THE MECHANIC THAT THE TRANSFER CASE WAS WORN AND NEEDED TO BE REPLACED. THE PROBLEM OCCURRED AGAIN AND THE DRIVESHAFT NEEDED TO BE REPLACED.*KB THE CONSUMER WAS INFORMED THAT THE LENGTH OF THE PROPELLER SHAFT THAT HAD BEEN INSTALLED AT THE TIME OF MANUFACTURING WAS TOO SHORT TO ALLOW SUFFICIENT LUBRICATION OF THE REAR OUTPUT SHAFT BUSHING IN THE TRANSFER CASE. *JB
NHTSA ODI #10217172
80,000 miles · Nov 5, 2007
Engine And Engine CoolingPower Train
2003 HUMMER H2 TRANSMISSION COOLER RUPTURED WHICH LEAKED TRANSMISSION FLUID INTO ENGINE COOLANT. REQUIRED REPLACEMENT OF RADIATOR, ALL COOLANT HOSES AND FLUSHING BOTH THE TRANSMISSION FLUID AND ENGINE COOLANT. COST WAS $1,400. UNKNOWN IF TRANSMISSION WAS DAMAGED FROM CONTAMINATION OF FLUID. *TR
NHTSA ODI #10207993
Mileage unknown · Aug 16, 2006
Power Train
2003 H2 HUMMER, TRANSMISSION FLUID LEAKING INTO THE COOLANT SYSTEM THAT REQUIRES REMOVAL OF ALL HOSES AND RADIATOR FLUSHING AND CLEANING AND POSSIBLY REMOVING THE TRANSMISSION BECAUSE OF CONTAMINATION. EXTREMELY EXPENSIVE AND I BELIEVE TO BE A DEFECT IN WORKMANSHIP. *NM
NHTSA ODI #10165680
24,000 miles · May 13, 2005
Electrical SystemPower TrainStructure
CONSUMER WAS GOING 70 MPH AND THE TWO FRONT TIRES LOCKED, WHILE THE TWO BACK TIRES KEPT MOVING. VEHICLE THEN CONTINUED TO SKIP. THE DRIVESHAFT WAS REPLACED. *AK FOR THE PAST 8 MONTH THIS VEHICLE HAS BEEN IN THE SHOP MORE THAN AT THE CONSUMER'S HOME. THE VEHICLE HAS NEEDED A NEW ALTERNATOR, TRANSMISSION, BATTERY,IGNITION …
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CONSUMER WAS GOING 70 MPH AND THE TWO FRONT TIRES LOCKED, WHILE THE TWO BACK TIRES KEPT MOVING. VEHICLE THEN CONTINUED TO SKIP. THE DRIVESHAFT WAS REPLACED. *AK FOR THE PAST 8 MONTH THIS VEHICLE HAS BEEN IN THE SHOP MORE THAN AT THE CONSUMER'S HOME. THE VEHICLE HAS NEEDED A NEW ALTERNATOR, TRANSMISSION, BATTERY,IGNITION AND DRIVE SHAFT. THE ROOF LEAKED AND THE CONSUMER HAD TO REPLACE ONE OF THE SIDE WINDOWS. *BF *NM
NHTSA ODI #10103378
31,800 miles · Dec 9, 2004
Power Train
A SQUEAKING SOUND FROM THE FRONT, LEFT WHEEL ARE ON MY HUMMER H2 LED ME TO VISIT THE LOCAL DEALERSHIP. AFTER THE FIRST 2 VISITS, THE SQUEAK WAS STILL PRESENT. ON THE THIRD VISIT THEY REPLACED THE HUB ASSEMBLY. *AK
NHTSA ODI #10102437
Mileage unknown · May 27, 2004
Power TrainSuspension
LIFTED VEHICLE WAS TAKEN INTO HAVE A LEAKING UPPER DRIVER'S SIDE CV BOOT REPLACED. WHEN THE AXLE WAS REMOVED, IT WAS DISCOVERED THAT THE AXLE HAD BEEN DESTOYED AND THE PIECES PUNCTURED THE CV BOOT INTERNALLY CAUSING THE LEAK. THIS IS THE 2ND TIME IN A LITTLE OVER 600 MILES THAT THIS BOOT NEEDED TO BE REPLACED. WHEN THE CV BOOT W…
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LIFTED VEHICLE WAS TAKEN INTO HAVE A LEAKING UPPER DRIVER'S SIDE CV BOOT REPLACED. WHEN THE AXLE WAS REMOVED, IT WAS DISCOVERED THAT THE AXLE HAD BEEN DESTOYED AND THE PIECES PUNCTURED THE CV BOOT INTERNALLY CAUSING THE LEAK. THIS IS THE 2ND TIME IN A LITTLE OVER 600 MILES THAT THIS BOOT NEEDED TO BE REPLACED. WHEN THE CV BOOT WAS LAST REPLACED, THERE WAS NO NOTICABLE DAMAGE TO THE AXLE. WAS INFORMED BY A GM TECH TODAY THAT THE DAMAGE MAY HAVE OCCURED WHEN THE AXLE WAS REINSTALLED. NOW I HAVE BEEN INFORMED BY THE DEALERSHIP THAT THE GM FACTORY REP HAS DENIED WARRANTY COVERAGE. VEHICLE HAS BEEN LIFTED AND DEALERSHIP ATTRIBUTES THE DAMAGE TO THE LIFT AND THE ANGLE OF THE AXLES. VEHICLE IS NOT USED OFF-ROAD AND 4X4 OPTION IS NOT USED. OTHER H2'S ON WWW.H2SOURCE.COM HAVE HAD SIMILAR PROBLEMS BUT THIS WAS DUE TO OFF-ROAD USAGE. *MR
NHTSA ODI #10073259
Official recalls
4Sep 9, 2008
GM IS RECALLING 13,358 MY 2003 HUMMER H2 VEHICLES. SOME OF THESE VEHICLES HAVE A CONDITION IN WHICH WATER CAN ENTER THE WINDSHIELD WIPER MOTOR MODULE. IF A SUFFICIENT AMOUNT OF WATER ENTERS THE MODULE, OVER TIME, THE FRONT WINDSHIELD WIPERS MAY WORK INTERMITTENTLY OR THEY MAY BECOME INOPERATIVE.
Consequence & remedy
Consequence: IF THIS WERE TO OCCUR, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A VEHICLE CRASH.
Remedy: DEALERS WILL INSPECT THE WINDSHIELD WIPER MODULE COVER, AND REPLACE THE WINDSHIELD WIPER MODULE COVER FREE OF CHARGE. THE RECALL BEGAN ON NOVEMBER 7, 2008. OWNERS MAY CONTACT HUMMER AT 1-800-732-5493 OR THROUGH THEIR WEBSITE AT <A HREF=HTTP://WWW.GMOWNERCENTER.COM>HTTP://WWW.GMOWNERCENTER.COM</A> .
Feb 4, 2004
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 & remedy
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.
Mar 6, 2003
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 114, "THEFT PROTECTION." THESE VEHICLES ARE EQUIPPED WITH A MECHANICAL OVERRIDE THAT COULD ALLOW THE IGNITION KEY TO BE REMOVED WITH THE SHIFT LEVER IN A POSITION OTHER THAN PARK. IN ADDITION, THESE VEHICLES HAVE AN OVERRIDE THAT CAN ALLOW THE TRANSMISSION TO BE SHIFTED OUT OF PARK WITH THE IGNITION IN THE OFF POSITION.
Consequence & remedy
Consequence: THESE OVERRIDES ARE NOT PERMITTED UNLESS THE VEHICLE HAS A LOCKING STEERING COLUMN.
Remedy: DEALERS WILL ELIMINATE THESE CONDITIONS BY DISABLING THE OVERRIDES. OWNER NOTIFICATION BEGAN ON MAY 29, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020, GMC AT 1-800-462-8782, OLDSMOBILE AT 1-800-442-6537, OR HUMMER AT 1-866-486-6376.
Oct 29, 2002
CERTAIN SPORT UTILITY AND PASSENGER VEHICLES EXHIBIT A CONDITION IN WHICH THE WINDSHIELD WIPER MOTOR COULD FAIL DURING USE BECAUSE OF IMPROPER MANUFACTURE.
Consequence & remedy
Consequence: IF THIS WERE TO OCCUR IN SEVERE WEATHER, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A VEHICLE CRASH.
Remedy: DEALERS WILL INSPECT AND, IF NECESSARY, REPLACE THE WIPER MOTOR ASSEMBLY. OWNER NOTIFICATION BEGAN NOVEMBER 6, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT SATURN AT 1-800-553-6000, PROMPT #3 OR HUMMER AT 1-866-486-6376.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
3PE08042 · Windshield Wiper Motor Module Failure
Opened Jul 16, 2008 · Closed Oct 15, 2008
Status: closed (inferred from source dates) · Visibility:windshield Wiper/washer:motor
THIS INVESTIGATION DISCLOSED THAT WATER INTRUSION INTO THE WIPER MOTOR MODULE OF THE SUBJECT VEHICLES MAY LEAD TO INTERMITTENT OPERATION OR SUBSEQUENT TOTAL SYSTEM FAILURE.ANALYSIS OF DATA DISCLOSED THAT THE SUBJECT VEHICLES BUILT BETWEEN FEBRUARY 2003 AND MAY 2003 EXHIBITED HIGH WARRANTY CLAIM RATES.THE MANUFACTURED NOTIFIED NHTSA BY LETTER DATED SEPTEMBER 8, 2008, THAT A SAFETY RECALL PROGRAM HAS BEEN INITIATED FOR THE 13,358 VEHICLES BUILT DURING THIS TIME PERIOD.NHTSA HAS ASSIGNED NO. 08V-456 TO THIS SAFETY RECALL CAMPAIGN.CORRECTIVE ACTION WILL CONSIST OF REPLACING THE WIPER MODULE COVER, WHERE EVIDENCE OF WATER INTRUSION EXISTS.TO CORRESPOND WITH PARTS AVAILABILITY, THE DEALER BULLETIN AND OWNER NOTIFICATION LETTER ARE SCHEDULED FOR ISSUANCE IN NOVEMBER 2008.
EA05017 · Hummer H2 Steering Knuckle Failures
Opened Oct 28, 2005 · Closed Apr 30, 2007
Status: closed (inferred from source dates) · Suspension:front:control Arm:lower Ball Joint
ODI UPGRADED THIS INVESTIGATION AT THE CONCLUSION OF PE04-080.THE ALLEGED DEFECT INVOLVES THE FAILURE OF THE STEERING KNUCKLE AT THE LOWER BALL JOINT BOSS, RESULTING IN A SEPARATION OF THE LOWER BALL JOINT FROM THE KNUCKLE.A LOWER BALL JOINT SEPARATION COULD RESULT IN A LOSS OF STEERING AND/OR A DISABLED VEHICLE. IT APPEARS THAT THE FRACTURES OF H2 STEERING KNUCKLES CAN BE ATTRIBUTED TO WHEEL/TIRE COLLISION FORCES BEING TRANSFERRED DIRECTLY TO THE STEERING KNUCKLE.THE ORIGINAL KNUCKLE DESIGN APPEARS TO BE SUFFICIENT FOR THE H2 APPLICATION.EVIDENCE FROM INSPECTED VEHICLES, PHOTOGRAPHS, POLICE REPORTS AND EDR DATA INDICATES COLLISION IMPACT EVENTS PLACED STRESS ON THE STEERING KNUCKLE CAUSING IT TO FRACTURE.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS WITH REGARD TO THE SUBJECT COMPONENT.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION ON THIS ISSUE IF WARRANTED.
PE04080 · Steering Knuckle Fracture
Opened Dec 2, 2004 · Closed Oct 28, 2005
Status: closed (inferred from source dates) · Steering:linkages:tie Rod Assembly; Suspension:front; Suspension:front:control Arm:lower Ball Joint
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Additional source detail variants (3)
Steering:linkages:tie Rod Assembly
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Suspension:front:control Arm:lower Ball Joint
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
Suspension:front
DURING THE PE, ODI INVESTIGATED THE HUMMER H2 FOR FRACTURES WHICH WERE OCCURRING AT THE FRONT STEERING KNUCKLE LOWER BOSS.WHEN THE KNUCKLE LOWER BOSS FRACTURES, THE LOWER BALL JOINT STUD IS RELEASED AND THE ENTIRE KNUCKLE AND WHEEL/TIRE ASSEMBLY SEPARATES FROM THE VEHICLE.ODI IS UPGRADING THIS INVESTIGATION TO GAIN A FULL TECHNICAL UNDERSTANDING OF THE FACTORS WHICH CONTRIBUTED TO THESE FAILURES.
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