2007 Hummer H3 Engine Problems

VEHICLE MISFIRES FREQUENTLY. ENGINE WILL NEARLY STALL AT IDLE DUE TO MISFIRES AND SHAKE THE WHOLE VEHICLE. LACK OF POWER AND EFFICIENCY. AND JUDDERING WHILE ACCELERATING. IT IS KNOWN TO GM AND MANY PEOPLE HAVE HAD TO RESORT TO CYLINDER HEAD REPLACEMENTS COSTING HUNDREDS AT A MINIMUM.

TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING 35 MPH, THE ENGINE OIL INDICATOR ILLUMINATED AND AN ODOR EMITTED FROM THE VEHICLE. THE CONTACT REPLACED THE OIL AND TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC WHERE IT WAS DISCOVERED THAT THERE WAS A SMALL HOLE IN THE MANIFOLD, WHICH BURNED OUT THE OIL. THE CONTACT PAID OUT OF POCKET TO HAVE THE VEHICLE REPAIRED. THE MANUFACTURER WAS NOTIFIED AND FILED A CLAIM. THE CONTACT WAS REFERRED TO NHTSA TO FILE A COMPLAINT. THE DEALER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 120,000.

DRIVING DOWN THE ROAD AND IT STOP AND IT WOULD NOT START ENGINE LOCK UP

TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE ENGINE FAILED TO START. THE CONTACT HAD TO SIT IN THE VEHICLE AND WAIT A WHILE BEFORE ATTEMPTING TO START THE VEHICLE. THE FAILURE OCCURRED AT ANY GIVEN MOMENT AND WAS BECOMING MORE FREQUENT. IN ADDITION, THE PASS LOCK WARNING INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE CONTACT REPLACED THE MANIFOLD AND WAS REIMBURSED. THE FAILURE MILEAGE WAS 84,822. THE VIN WAS UNKNOWN.

HUMMER WILL NOT START, ENGINE TURNS OVER NORMALLY, BUT WILL NOT START. WAIT EXACTLY 10 MINUTES AND IT STARTS UP FINE. CAN HAPPEN ANY TIME, AT THE GAS STATION, FIRST THING IN THE MORNING. LEARNED THAT IF THE SECURITY LIGHT ON THE DASH BLINKS WHEN THE KEY IS TURNED ON, THE VEHICLE WILL NOT START. IF LIGHT STAYS ON, THE VEHICLE STARTS. HAVE WATCHED FOR THIS AT EVERY START UP, CAN NOW TELL WHEN THE VEHICLE WON'T START. THIS IS A MAJOR PROBLEM WITH GM VEHICLES WITH PASS LOCK SINCE THE LATE 1990S, GM NEED TO TAKE RESPONSIBILITY FOR THIS PROBLEM NOW!!!!!!!!!!

TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING VARIOUS SPEEDS AND APPROACHING A STOP, THE VEHICLE OVERHEATED. THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE CONTACT COASTED TO THE SIDE OF THE ROAD, POWERED OFF THE VEHICLE, AND WAITED FOR A FEW MINUTES TO RESTART IT AND RESUME DRIVING. THE VEHICLE WAS TAKEN TO STINGRAY CHEVROLET BARTOW (1475 W MAIN ST, BARTOW, FL 33830, (863) 800-9999) WHERE IT WAS DIAGNOSED THAT THE SPEED SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS LATER TAKEN TO AN INDEPENDENT MECHANIC WHERE THE THERMOSTAT WAS REPLACED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 136,000.

IF RETURNING SOON AFTER SHUT OFF ; IT WILL NOT RESTART. HAVE TO WAIT AWHILE FOR IT TO RESTART. IT'S WEIRD BECAUSE THERE ARE NO OTHER PROBLEMS. IT HAS BEEN DOING THIS FOR AWHILE NOW.

2007 HUMMER H3. CONSUMER WRITES SEEKING REIMBURSEMENT FOR REPAIRS DONE PRIOR TO SAFETY RECALL BEING ISSUED. *LD *JS

MY HUMMER STALLS AND DIES AT VARIOUS TIMES. THIS IS DANGEROUS AND KNOW ONE CAN SEEM TO TELL ME WHY IT DIES WHILE DRIVING. I TAKE GREAT CARE OF MY TRUCK AND ME I HAVE METAL SHAVINGS IN OIL. DYING IN AN INTERSECTION WITH CHILDREN IS DANGEROUS. THIS NEEDS TO BE ADDRESSED.

TAKATA RECALL MISS FIRE IGNITION COIL THERES WAY TO MANY COMPLAINTS ABOUT THIS IF THERES NOTHING DONE ABOUT THIS ITS THE LAST TIME IM BUYING A GM AUTOMOTIVE TO GET IT FIX COST ALMOST $3000 DOLLARS THATS NOT GOOD FOR YOUR BUSINESS

TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 15V421000 (VISIBILITY) AND STATED THAT THE PARTS NEEDED FOR THE REPAIR WERE NOT AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME TO THE RECALL REPAIR. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 140.000.

TL* THE CONTACT OWNS A 2007 HUMMER H3. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE SHOOK VIOLENTLY AND STALLED WITHOUT WARNING. THE VEHICLE COULD NOT BE RESTARTED. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE ENGINE OR THE CYLINDER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 56,800. UPDATED 03/10/15*LJ UPDATED 6/17/2015 *JS

NOTICED RADIATOR FLUID DRIPPING UNDERNEATH VEHICLE. OPENED THE HOOD AND FOUND RADIATOR COOLANT HAD BEEN BLOWN ALL OVER INTERIOR ENGINE COMPARTMENT. ENOUGH COOLANT REMAINED IN THE RESERVOIR TO PREVENT OVERHEATING. I NOTICED THE INCIDENT JUST IN TIME. *TR

THE CAR SHUT OFF AS I WAS MAKING A LEFT HAND TURN WITH NO WARNING OR INDICATION. COMPLETE LOSS OF POWER. *TR

I PURCHASED THIS VEHICLE, NEW IN JULY 2007. SINCE THAT TIME I HAVE METICULOUSLY MAINTAINED THE VEHICLE. ON 7/28/14, PARKED AT HOME. GOT OUT AND SMELLED COOLANT VAPORIZING (DISTINCT SMELL). I AM A RETIRED MASTER MECHANIC, WITH 44 YEARS EXPERIENCE (CURRENTLY AGE 60). I EXAMINED THE RADIATOR, RINSED IT OFF AND DRIED IT, PRESSURIZED THE SYSTEM TO DISCOVER A HAIRLINE CRACK IN THE UPPER, PLASTIC TANK OF THE RADIATOR IN AN AREA WITH NO IMPINGEMENT OF OTHER COMPONENTS, NO TRAUMA, AND NO ROUGH USE, EVER. I CAUGHT IT AT THE VERY FIRST MANIFESTATION, SOLELY BY THE SMELL. EXAMINING THE VEHICLE CLOSELY TO DISCOVER WHILE MY RADIATOR HAD ONLY THIS HAIRLINE CRACK IN A LOCATION OF NO-STRESS AND NO IMPINGEMENT OF OTHER COMPONENTS. RESEARCH FURTHER TO DISCOVER THIS IS A VERY COMMON PROBLEM WITH THE H3, FROM 2006, 2007, 2008 AND 2009 MODELS ALL IN THE 50,000 TO 100,000 MILE READINGS. THE REPLACEMENT OF THE RADIATOR AT LOCAL GM DEALER, WITH COOLING SYSTEM SERVICE WAS EXTREMELY EXPENSIVE AS THE REPLACEMENT OF THE RADIATOR REQUIRES THE RECEIVER DRYER OF THE AIR CONDITIONING SYSTEM TO BE DISCONNECTED WHICH REQUIRES DISCHARGE AND RECHARGE OF REFRIGERANT R124A. I SAVED THE DEFECTIVE RADIATOR. THERE IS NO OTHER WEAR NOR DAMAGE. THE INTERNAL CORES WERE CLEAR AND CLEAN LIKE NEW. NO OBSTRUCTIONS, DIRT NOR WEAR. IN OTHER WORDS I WAS FORCED TO REPLACE A PERFECTLY GOOD RADIATOR FOR 1 HAIRLINE CRACK ON THE UPPER PLASTIC TANK. THIS REPAIR, INCLUDING ALL COURTESY DISCOUNTS FROM THE SELLING DEALERSHIP, AS I HAD BEEN AN AUTO REPAIR SHOP OWNER AND LOYAL CUSTOMER FOR 30 YEARS OF MY LIFE, COST ME $966.57. NHTSA SHOULD DO A FORMAL DEFECT INVESTIGATION ON ALL THE HUMMER H3 MODELS AND ANY / ALL OTHER GM LIKE-TYPE VEHICLES WITH THE PLASTIC TANK RADIATORS WHICH COULD CAUSE A SERIOUS ACCIDENT OR DEATH. *TR

I WAS SITTING IN THE LINE AT MY SON'S SCHOOL, BEEN SITTING THERE 2 - 3 MINUTES, AND I SMELLED COOLANT. LOOKED AT MY GAUGE AND IT WAS RIDING JUST BELOW MID-POINT....NORMAL. GOT MY SON AND STARTED HOME. SITTING AT THE RED LIGHT, I SMELLED COOLANT AGAIN. THIS TIME I KNEW IT WAS MY CAR. WE WENT TO A SERVICE STATION AND ASK IF SOMEONE COULD CHECK TO SEE IF WE HAD A LEAK. THEY PULLED MY H3 INTO THE BACK AND HOOKED UP A PRESSURE "TOOL" TO THE RADIATOR AND LOW AND BEHOLD, BUT A HAIRLINE CRACK ON THE UPPER DRIVER'S SIDE OF THE RADIATOR. THE MECHANIC LAUGHED AND SAID I WAS THE 2ND ONE THIS WEEK AND THE 6TH ONE SINCE THEY OPENED 6 MONTHS AGO. HE SAID THAT H3S WERE KNOWN TO HAVE RADIATOR ISSUES BECAUSE THE RADIATORS WERE PLASTIC! SERIOUSLY...PLASTIC! I WAS GIVEN A QUOTE OF $1,100 TO REPLACE THE RADIATOR WITH ANOTHER PLASTIC ONE AND THAT WOULD GIVE ME A 2 YEAR OR 24,000 MILE WARRANTY. I BROUGHT THE TRUCK BACK TO MY HOUSE SO MY HUSBAND COULD LOOK AT IT. I DID SOME RESEARCH ON THE INTERNET AND IT SEEMS THAT THIS IS A WELL KNOWN PROBLEM WITH HUMMERS AND YET GM HAS NOT DONE A RECALL. I FOUND A NUMBER FOR HUMMER CUSTOMER SERVICE AND CALLED THEM. WHEN I TOLD THE MAN THAT ANSWERED I HAD COOLANT LEAKING, HE SAID "OH, GIVE ME YOUR ZIP CODE AND I WILL FIND A LOCAL DEALERSHIP THAT CAN REPLACE THE RADIATOR." NO QUESTIONS...HE KNEW WHAT THE PROBLEM WAS ALREADY. HE WENT ON TO SAY THAT WE WOULD HAVE TO "INVEST" IN A DIAGNOSTIC AND IF THE DEALERSHIP DETERMINED IT WAS A MANUFACTURERS DEFECT, THAT HUMMER MIGHT "PARTICIPATE" IN THE REPAIR COSTS. I WOULD THINK WITH THIS BEING SUCH A COMMON PROBLEM, A RECALL WOULD BE IN ORDER AND POSSIBLY A REPLACEMENT RADIATOR THAT ISN'T PLASTIC! *TR

TL* THE CONTACT OWNS A 2007 HUMMER H3. THE CONTACT STATED THAT THE ENGINE WAS DEFECTIVE. THE ENGINE FAILED TO START NUMEROUS TIMES INTERMITTENTLY. THE ENGINE STARTED AFTER WAITING TEN MINUTES AND THE ANTI-THEFT LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 74,000. UPDATED 04/22/16*LJ *TR

I WAS DRIVING ON THE EXPRESS WAY WHEN I NOTICED MY ENGINE REV REAL HIGH. I LOOKED AT THE RPM'S AND IT WAS ALMOST RED LINED. I LET OFF THE GAS IMEDIATLY AND CAME TO A SLOW CRAWL AND FOUND THAT IT WOULD NOT SHIFT OUT OF SECOND GEAR. PULLED IT OFF THE ROAD AND SHUT IT OFF TO GET OUT TO FIND THAT THERE WAS TRANSMISSION FLUID AND RADIATOR COOLANT POURING FROM THE TRANSMISSION. HAD IT TOWED TO A MECHANIC TO FIND OUT THAT THE RADIATOR WAS BAD WHICH CAUSED THE TRANSMISSION AND COOLANT TO MIX BETWEEN THE TWO. THIS CAUSING THE TRANSMISSION TO BE DESTROYED ALONG WITH THE RADIATOR. FOR THIS VEHICAL BEING THIS LOW ON MILES THIS SHOULD HAVE NEVER HAPPEND. GM HAS MADE A FAULTY RADIATOR AND SOMETHING NEEDS TO BE DONE. *TR

AC/HEAT BLOWER FAN RESISTOR FAULTY. CAUSES BLOWER TO STOP WORKING. THE SHORT MAY CAUSE A FIRE. MANY COMPLAINTS OF THIS ISSUE ON THE INTERNET. MAY BE TIME TO PURSUE A CLASS ACTION SUIT. *TR

RADIATOR IS CRACKED ON DRIVER SIDE DUE TO RUBBING OF METAL PARTS. *TR