Owner-reported complaints naming the engine system, filed with NHTSA
Data refreshed
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 1999 GMC Suburban submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 24 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Shown in the owner’s own words, exactly as filed
You'll be driving down the road the brakes will be working just fine then they'll just all sudden go out and then it backfires and blows it blows up a big cloud of fire out of the motor and that's the GMC 1999 Suburban four-wheel drive 7.4 l
1999 GMC SUBURBAN. INTAKE MANIFOLD GASKET FAILED. THIS OCCURRED AFTER REPLACING THE WATER PUMP WHICH FAILED FOR THE SECOND TIME IN LESS THAN A YEAR. MY MECHANIC SAYS THIS IS EPIDEMIC WITH THE GM VEHICLES WHICH USE THE DEXCOOL ANTIFREEZE. MY EXPERIENCE BEARS THIS OUT: MY PREVIOUS VEHICLE WAS A 1999 CHEVY SUBURBAN, WHICH HAD THE SAME PROBLEMS. THERE SHOULD BE A RECALL OF ALL THESE VEHICLES! *NM
1999 GMC SUBURBAN INTAKE MANIFOLD GASKET FAILURE ON 5.7L ENGINE RESULTING IN LEAKING ANTIFREEZE, AND EXPENSIVE FIX. THOUSANDS OF SIMILAR FAILURES, THERE SHOULD BE A (FORCED) RECALL BASED ON MAGNUSON-MOSS ! *NM
DT*: THE CONTACT STATED THE GAS GAUGE LOCATED ON THE INSTRUMENT PANEL FAILED. ALSO, WHILE PARKED IN THE GARAGE, THERE WAS A LIQUID OBSERVED ON THE FLOOR. THE DEALERSHIP DETERMINED THE INTAKE MANIFOLD WAS LEAKING.
1999 GMC SUBURBAN SUV: LEAKING INTAKE MANIFOLD SPILLING COOLANT TO ENVIRONMENT. ENGINE DAMAGED AS COOLANT MIXED WITH OIL AND/OR FUEL. 50K MILES, DRIVEN BY SOCCER MOM TO SCHOOL, PRACTICE, CHURCH. EPIDEMIC PROBLEM PER FAMILY MECHANIC PERFORMS DOZENS OF THESE REPAIRS PER MONTH. HIGH EXPENSE FOR THIS PREMATURE FAILRE: REPAIR $780.*AK
VEHICLE ENGINE WILL INTERMITTENTLY STALL OR CUT OUT AT HIGHWAY SPEEDS. THIS CONDITION OCCURS APPROXIMATELY ONCE OR TWICE A MONTH UNDER VARIED DRIVING CONDITIONS. THE VEHICLE WILL RESTART IMMEDIATELY AFTER STALLING. SEVERAL TIMES WHEN THIS HAS OCCURRED, THE SERVICE ENGINE LIGHT WILL COME ON, BUT IT WILL TURN OFF AFTER 20-30 MILES OF DRIVING. THIS HAS BEEN OCCURRING FOR OVER A YEAR NOW, I HAVE TAKEN THE VEHICLE TO THREE GM DEALERSHIPS, AND THEY CLAIM THEY CANNOT REPLICATE THE PROBLEM. THEY HAVE REPLACED THE FUEL PUMP AT MY EXPENSE, AND THE CATALYTIC CONVERTER UNDER WARRANTY. I HAVE ALSO TAKEN THE VEHICLE TO TWO INDEPENDENT SHOPS FOR THE SAME PROBLEM AND THEY HAVE ALSO NOT BEEN ABLE TO REPLICATE THE PROBLEM OR OFFER A SOLUTION, OTHER THAN REPLACING THE BASIC COMPONENTS (SPARK PLUGS , PLUG WIRES, FULE FILTER ETC), WHICH I HAVE HAD DONE.. THIS IS AN EXTREMELY DANGEROUS PROBLEM, PRIMARILY BECAUSE WHEN THE ENGINE STALLS, THE POWER BRAKES AND STEERING ALSO FAIL. I LIVE IN A MOUNTAINOUS REGION OF VIRGINIA AND HAVE HAD THIS HAPPEN WHILE DRIVING MOUNTAIN SWITCHBACKS. THIS VEHICLE WEIGHS ALMOST SIX THOUSAND POUNDS, AND A LOSS OF POWER BRAKES AND STEERING WHILE DESCENDING STEEP MOUNTAIN GRADES WITH SHARP CURVES CREATES AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THANK YOU FOR YOUR ASSISTANCE.*AK
WHILE DRIVING THE VEHICLE OVERHEATED. THE DEALER DETERMINED THAT THE INTAKE MANIFOLD WAS LEAKING COOLANT WHICH CAUSED THE ENGINE TO OVERHEAT. *NM
WITHOUT WARNING VEHICLE STALLED WHILE THE CONSUMER WAS DRIVING AT AN UNDETERMINED SPEED. CONSUMER CONTACTED WITH DEALER ON TWO SEPARATE OCCASIONS, BUT PROBLEM STILL OCCURS. *AK
INTAKE MANIFOLD LEAKS DUE TO A DEFECT IN THE DESIGN/MATERIALS OF THE GASKET. THE MATERIAL PREMATURLY BREAKSDOWN CAUSING LEAKING OF THE MANIFOLD.
LEFT REAR INTAKE MANIFOLD LEAK. ON A 1999 VEHICLE WITH ONLY 48,520 MILES (LIGHT USEAGE FOR MOM AND KIDS) THIS PROBLEM SEEMS A BIT PREMATURE. MY BROTHER WHO OWNS A 1998 GMC WITH ABOUT 60,000 MILES HAD SIMULAR PROBLEM. THE PART MUST BE DEFECTIVE AS BOTH PROBLEMS ARE VERY SIMULAR IN NATURE. COST TO FIX $700 TO $1,000 . THANK YOU
HAVE OWNED '90GMC C1500 P/U & '99 GMC C1500 SUBURBAN IN PAST 12 YEARS; BOTH VEHICLES HAVE HAD SAME PROBLEMS W/ FRONT BRAKE PULL/WEAR; SUSPENSION; BRAKE PIPES; ENGINE/TRANS. HESITATION, HANG....; CORRODED + BATTERY CABLES, BATTERIES; LEAKING HVAC DUCTS; AND ON & ON. HOW IN THE WORLD DOES 12+/- YEARS OF DOCUMENTED BRAKE PROBLEMS ACROSS VEHICLE LINES/MODELS NOT WARRANT A MASSIVE RECALL AND/OR COMPENSATION TO OWNERS FOR OBVIOUSLY FAULTY ENGINEERING, MATERIALS, ETC.....????!!!! I SUPPOSE THE FORD/FIRESTONE PROBLEMS TOOK PRECEDENCE? CAN YOU SAY "CLASS ACTION"??*AK
ALL THESE FAILURE HAVE BEEN THE SAME. THERE ARE OTHERS INCLUNCE ENGINE HEADS.*AK
NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
#7 SPARK PLUG WOULD FAIL. ALSO, CHANGED INTAKE MANIFOLD & HEAD GASKETS. PROBLEM WAS NOT INTERMITTENT. HAPPENED ALL TIME. TOOK VEHICLE TO SHOP FOR REPAIRS & PROBLEM STILL EXISTS. *AK
INTERMITTENTLY VEHICLE WILL STALL OUT AND DIE WITHOUT WARNING. DEALER IS INSPECTING VEHICLE AND HAS NOT BEEN ABLE TO DUPLICATE PROBLEM. *AK CONSUMER STATES THAT VEHICLE HAS STALLED WHILE PUTTING VEHICLE IN PARK WITHOUT TURNING IGNITION OFF. *SLC
CONSUMER NOTICED HIGH PITCHED WHISTLE FROM THE AIR VENTS, DEALER FOUND PROBLEM TO BE CAUSED BY A SMALL BLADDER IN THE AIR CONDITIONING UNIT WHICH ONCE REMOVED IS ALMOST IMPOSSIBLE TO REPLACE CORRECTLY. *SLC
EVERY TIME VEHICLE IS DRIVEN WITH THE HEADLIGHTS ON, HEADLIGHTS FLICKER ON AND GO OFF. VEHICLE HAS BEEN TAKEN TO THE DEALERSHIP FOUR TIMES IN A SIX-MONTH PERIOD. DEALER WAS NOT ABLE TO FIX THE PROBLEM. ALSO, DOORS ARE WARPED/ENGINE RUNS ROUGH/REPLACED DIFFERENTIAL/BRAKES ARE LOCKING UP. *AK
WHILE DRIVING DAUGHTER TO SCHOOL, PULLED INTO THE PARKING LOT AND VEHICLE STALLED, AND WOULD NOT START AGAIN. HAD VEHICLE TOWED TO THE DEALER, AND THEY BROKE THE FUEL SENDING UNIT. WHICH THEY REPLACED. BUT, STILL HAVING PROBLEM WITH VEHICLE STALLING. ENGINE CHECK LIGHT CAME ON AND STAYED ON. THEY PRESSURIZED THE TANK. NOW THE GAS GAUGE DOES READ PROPERLY. *AK
VEHICLE HAS DEFECTIVE TRANSMISSION/ ENGINE, TRANSAXLE,RING AND PINION,GEAR/ENGINE BEARING/BRAKE BOOSTER/ FRONT BRAKE PADS AND CALIPERS,AND SUSPENSION.CONSUMER FEELS VEHICLE WAS POORLY MANUFACTURED, ESPECIALLY WHEN PULLING TRAILOR OR WITH LOAD. PLEASE PROVIDE FURTHER INFORMATION. *AK
WHILE DRIVING AT ANY SPEED VEHICLE SHUTS OFF WITHOUT WARNING. LEAVING THE DRIVER WITH NO BRAKES AND POWER STEERING. DRIVER HAD TO STAND ON THE BRAKES BEFORE THE TRUCK CAME TO A COMPLETE STOP. DEALER IS NOT ABLE TO DUPLICATE THE PROBLEM. PLEASE PROVIDE ANY FURTHER INFORMATION. *AK
ROTORS WERE TURNED REPEATEDLY. WE SAVED THE OLD ONES INCASE THEY WERE METALLURGICALLY DEFECTIVE. THE OIL LEAKED OCCURRED WHEN TOWING WAS PLANNED. GMC HAS OFFERED TO REPURCHASE THE VEHICLE. THE A/C TURNES ON AND OFF, BUT I FORGOT WHEN THE LEAK WAS FIXED.
I LOST TRACK OF BRAKE FAILURES. THE TIRES WEAR EXCESSIVELY AND NEED BALANCING AND ROTATION. THERE IS A VIBRATION FROM THE GAS PEDAL, BUT NOTHING IS FOUND. THE BETTER BUSINESS BUREAU RESULTED IN AN UNSATISFACTORY OFFER - I HAVE TO PAY TO CLEAR THE TITLE TO HAVE THE CAR TAKEN BACK. NO OTHER '99 IS LIKE OURS TO REPLACE IT. *AK
SEPARATE 14 INCIDENTS ARE REPORTED ON 2 COMPLAINTS. STATE FARM AUTO WAS INFORMED, CONTACTED REPAIRED AT COULTER GMC AND GOT ABS FIXED. 2 WEEKS IS MAX BRAKES WORK. *AK
THE A/C STUNK; I FELT INSECURE WITH THE BRAKES SOFT MOST TIMES.TWICE WE DROVE 45 MI. TO MIDWAY AND THEY DID NOT TAKE THE VEHICLE IN, GMC SAID TO GO TO NEAREST DEALER.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
Data on this page last refreshed .