2003 Hummer H2
Vehicle Specs & Maintenance Data
The 2003 Hummer H2 maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Hummer H2.
For oil changes, the 2003 Hummer H2 takes 5W-30 Full Synthetic motor oil with a capacity of 6 quarts. Brake fluid type is DOT 3, the recommended coolant is Dex-Cool (OAT), and transmission fluid is Dexron VI. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Hummer H2, torque the lug nuts to 140 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
There are 5 NHTSA safety recalls on file for the 2003 Hummer H2. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2003 Hummer H2 uses 5W-30 Full Synthetic motor oil (6 qt capacity), requires lug nuts torqued to 140 ft-lbs, takes DOT 3 brake fluid.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2003 Hummer H2.
No known problems reported for this vehicle yet.
5 NHTSA safety recalls for the 2003 Hummer H2. Check your VIN at NHTSA.gov
VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR
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.
IF THIS WERE TO OCCUR, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A VEHICLE CRASH.
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> .
STEERING
CERTAIN FABTECH AFTERMARKET REPLACEMENT PITMAN ARMS, P/NOS. FTS71000 AND FTS71001, INSTALLED FOR USE ON CERTAIN 2001-2006 GM C/K 2500 PICK UP TRUCKS AND SPORT UTILITY VEHICLES. THE PIN LOCATED INSIDE THE PITMAN ARM CAN SHEAR OFF DUE TO A REVERSE BENDING FATIGUE CONDITION, RESULTING IN A TOTAL LOSS OF STEERING CONTROL.
LOSS OF STEERING CONTROL COULD LEAD TO A VEHICLE CRASH WITH POTENTIAL INJURY OR DEATH.
FABTECH WILL NOTIFY OWNERS AND REPLACE THE PITMAN AND IDLER ARMS FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN DURING FEBRUARY 2006. OWNERS MAY CONTACT FABTECH AT 909-597-7800.
SERVICE BRAKES, HYDRAULIC
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.
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.
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.
POWER TRAIN:AUTOMATIC TRANSMISSION
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.
THESE OVERRIDES ARE NOT PERMITTED UNLESS THE VEHICLE HAS A LOCKING STEERING COLUMN.
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.
VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR
CERTAIN SPORT UTILITY AND PASSENGER VEHICLES EXHIBIT A CONDITION IN WHICH THE WINDSHIELD WIPER MOTOR COULD FAIL DURING USE BECAUSE OF IMPROPER MANUFACTURE.
IF THIS WERE TO OCCUR IN SEVERE WEATHER, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A VEHICLE CRASH.
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.