NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
23 reportsClear category filterMileage unknown · Oct 11, 2006
Engine And Engine Cooling
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 S…
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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
NHTSA ODI #10170571
99,000 miles · Aug 18, 2006
Engine And Engine Cooling
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
NHTSA ODI #10165925
69,000 miles · Jul 26, 2006
Electrical SystemEngine And Engine Cooling
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.
NHTSA ODI #10163520
50,500 miles · Mar 9, 2005
Engine And Engine Cooling
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 $78…
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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
NHTSA ODI #10112785
72,000 miles · Nov 4, 2004
Engine And Engine Cooling
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 …
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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
NHTSA ODI #10098249
71,800 miles · Feb 19, 2004
Engine And Engine Cooling
WHILE DRIVING THE VEHICLE OVERHEATED. THE DEALER DETERMINED THAT THE INTAKE MANIFOLD WAS LEAKING COOLANT WHICH CAUSED THE ENGINE TO OVERHEAT. *NM
NHTSA ODI #10059332
Mileage unknown · Dec 8, 2003
Engine And Engine Cooling
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
NHTSA ODI #10050166
Mileage unknown · Feb 20, 2003
Engine And Engine Cooling
INTAKE MANIFOLD LEAKS DUE TO A DEFECT IN THE DESIGN/MATERIALS OF THE GASKET. THE MATERIAL PREMATURLY BREAKSDOWN CAUSING LEAKING OF THE MANIFOLD.
NHTSA ODI #10007882
Mileage unknown · Jan 22, 2003
Engine And Engine Cooling
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
NHTSA ODI #10003234
Mileage unknown · Sep 11, 2002
Engine And Engine CoolingPower TrainService Brakes, Hydraulic
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 …
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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
NHTSA ODI #767024
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