1999 GMC Sierra engine problems

ENGINE AND ENGINE COOLING

BRAKE FLUID LEAKING ALL OVER BOTTOM OF TRUCK SPRAYING OUT I TOOK TO A MECHANIC AND HAD 1000 DOLLAR BRAKE LINE JOB DONE GOT TRUCK BACK AND ABS BRAKES WORKED LIKE MANUAL BRAKES HAD A SENSOR AND 2 BALL JOINTS REPLACED IM BEING RIPPED OF FROM A GMC LOYAL CUSTOMER I WAS I GUESS BACK TO FORD OR TOYOTA FOR MY NEXT NEW TRUCKS I HAD WARRANTY ISSUES YOU CHEAP [XXX] WOULDNT PAY FOR A WATERPUMP THAT WAS LEAKING ONLY A 7 DOLLAR GASKET ALSO HAD A TRANSMISSION ON MY WORK VAN REPAIR AND THEN REPLACED AFTER A MONTH OF RUN AROUND. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA complaint #10562371 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

TWO BROKEN MANIFOLD BOLTS IN REAR DRIVERS SIDE OF ENGINE ON 5.3 VORTEC ENGINE, EXHAUST LEAK FROM WHERE MANIFOLD HAS SEPARATED FORM HEAD. CARBON BUILDUP AND DISCOLORATION VISIBLE. HIGH TEMP EXHAUST BEING RELEASED UNDER THE HOOD. APPEARS TO BE A VERY COMMON COMPLAINT ON MANY GM VEHICLES AND MODEL YEARS.

NHTSA complaint #10447249 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

DT*: THE CONTACT STATED A KNOCKING NOISE WAS HEARD MOMENTARILY WHEN STARTING THE VEHICLE. THE VEHICLE HAS BEEN TAKEN TO THE DEALERSHIP 3 TIMES WHO DETERMINED THE PISTONS WERE KNOCKING. THE PROBLEM CANNOT BE REPAIRED. THE DEALERSHIP INFORMED THE CONTACT OF A TSB #010601028A. UPDATED 3/9/2006 -

NHTSA complaint #10150908 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:COOLING SYSTEM

REPEATED ABS BRAKE FAILURE. THIS HAS NOT BEEN CORRECTED DESPITE NUMEROUS ATTEMPTS TO REPAIR PROBLEM(S). HEATER MOTOR MALFUNCTION, REPEATED WIPER ARM REPLACEMENT, TAILGATE HANDLE MALFUNCTION.

NHTSA complaint #10129881 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

ENGINE KNOCKS ON COLD START

NHTSA complaint #10123697 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

TRUCK HAD COMPLETE LOSS OF OIL PRESSURE. MECHANIC SAID ENGINE APPEARED TO HAVE BEEN RUN WITHOUT OIL. KNOWING THAT THIS DID NOT OCCUR THE FAILURE HAD TO BE CAUSED BY A DEFECT IN THE ENGINE. I HAVE BEEN UNABLE TO GET ANY COOPERATION.

NHTSA complaint #10068784 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

WHILE DRIVING AT 30 MPH THE CONSUMER APPLIED THE BRAKES AND THE PEDAL WENT TO THE FLOOR, RESULTING IN EXTENDED STOPPING DISTANCE. THE DEALER REPLACED THE ROTORS AND PADS TWICE, HOWEVER THE PROBLEM RECURRED. *AK THE VEHICLE ALSO HAD TAILGATE AND ENGINE PROBLEMS. THE TIRES WERE REPLACED DUE TO THREAD CRACKS.

NHTSA complaint #10061755 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

FAULTY BRAKING SYSTEM ENGINE NOISE MUFFLER REPLACE INSTRUMENT PANEL FAULT TIRE WEAR TRANSMISSION AUTOMATIC SHIFTING REAREND NOISE

NHTSA complaint #10060835 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

FUEL PUMP WILL OVER HEAT AND THAN SHORT OUT. EXHAUST ALWAYS RATTLES ENGINE KNOCKS CAT. CONVERTERS WENT OUT DIGITAL DISPLAY STOPPED WORKING

NHTSA complaint #10051000 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

FUEL PUMP WILL OVER HEAT AND THAN SHORT OUT. EXHAUST ALWAYS RATTLES ENGINE KNOCKS CAT. CONVERTERS WENT OUT DIGITAL DISPLAY STOPPED WORKING

NHTSA complaint #10051000 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

FUEL PUMP WILL OVER HEAT AND THAN SHORT OUT. EXHAUST ALWAYS RATTLES ENGINE KNOCKS CAT. CONVERTERS WENT OUT DIGITAL DISPLAY STOPPED WORKING

NHTSA complaint #10051000 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:COOLING SYSTEM

I EXPERIENCED A SUDDEN ONSET OF A HISSING NOISE COMING FROM UNDER THE DASHBOARD. THE NOISE ONLY STARTS ABOVE 1400 RPM AND WHEN WARM. I HAVE TAKEN IT TO 2 GMC DEALERS AND 1 INDEPENDENT SERVICE SHOP. ALL HAVE STATED THAT THE NOISE IS WATER GOING THROUGH THE HEATER CORE. 1 DEALER SAID THAT THE COOLANT MUST HAVE BROKEN DOWN AND GELLED OR SCALED INTO THE HEATER CORE; THEREFORE, IT MUST BE REPLACED. GMC OWNERS MANUAL STATES CHANGE COOLANT AT 150000 MILE OR 5 YEARS, IF SO, WHY DID THE COOLANT BREAK DOWN? THIS APPEARS TO BE A MAJOR ISSUE AND I HAVE READ OF SIMILAR CASES. PLEASE HELP. DT

NHTSA complaint #770366 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

CONSUMER STATES THERE IS A LOUD KNOCKING SOUND IN ENGINE EVERY MORNING AT START UP, DEALER COULD NOT FIND THE CAUSE, THE MANUFACTURER OFFERED THE CONSUMER A WARRANTY ON THE ENGINE, CONSUMER STILL EXPERIENCING PROBLEM.

NHTSA complaint #562324 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

THE ENGINE HAS TWO LIFTERS, 5&8 KNOCKING. I'VE BEEN TO THE DEALER AND CALLED THE GMC CUSTOMER SERVICE LINE THREE TIMES EACH. THEY BOTH SAY THERE IS NOTHING THEY CAN DO ABOUT IT. "GM IS CURRENTLY INVESTIGATING CONDITION."

NHTSA complaint #731026 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

THE ENGINE FAILED. YH

NHTSA complaint #782039 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

THE REAR ROTORS U-JOINT, CARBON BUILD UP ON THROTTLE, REPLACED WINDOW MOTOR USES 2 QTS OF OIL EVERY 400 TO 500 MILES , TRANSMISSION USES 1 QT OF OIL EVERY 20000 MILES , AIR CONDITIONER FAN DOES NOT WORK ON HIGH I BELIEVE THE THROTTLE BUILD UP IS A SAFETY ISSUE WITH THE GAS PETAL STICKING. WE HAVE A LEMON

NHTSA complaint #729268 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

ENGINE KNOCKS LOUDLY AT START-UP AND LAST FOR APROX. 2 MINUTES - DEALER SAID THIS IS A NORMAL OCCURRENCE. THE ENGINE ALSO HAS SPARK KNOCK WHEN ACCELERATING AND DEALER ALSO SAYS THIS IS NORMAL - DEALER SAID THIS IS DUE TO CARBON BUILD UP ON RING LANDS AND COULD BE TEMPORARILY REPAIRED BUT WOULD RE-OCCUR WITHIN 10,OOO MILES. THIS PROBLEM STARTED AT 15,000 MILES AND CONTINUES TO DATE. I CANNOT SOLVE THE PROBLEM WITH ANY TYPE OF ADDITIVE ADVISED BY THE DEALER. DEALER SAID GMC HAS A DEFECTIVE ENGINE AND I HAVE TO LIVE WITH IT. THEY TOLD ME EVEN IF THEY REPLACED THE MOTOR I WOULD HAVE THE SAME PROBLEM WITH THE KNOCKING AND PINGING ON ACCELLERATION. THE DEALER CONTACTED GMC TECHNICAL ADVISOR DAN PRATNER CASE # 3970330 AND HE ADVISED THEM THIS WAS NORMAL FOR THIS ENGINE. I FIND IT HARD TO BELIEVE A PERSON CAN PURCHASE A VEHICLE WITH A DEFECTIVE ENGINE AND BE TOLD THIS IS NORMAL. THE PUBLIC NEEDS TO KNOW BEFORE THEY BUY THIS PARTICULAR PRODUCT SO THEY DO NOT END UP WITH A DEFECTIVE PRODUCT THAT WILL CAUSE THEM ADDITIONAL MAINTENANCE COSTS AND A VERY LOW RESALE VALUE NOT TO SPEAK OF THE EMBARRASSMENT OF HAVING A VEHICLE THAT KNOCKS LOUDLY ON COLD START-UP. I DO NOT KNOW WHAT THE LONG TERM EFFECTS OF THIS ENGINE KNOCKING WILL DO. IF YOU DO INVESTIGATE THIS PROBLEM AND FIND THIS TO BE CAUSED BY ANOTHER PROBLEM THAT CAN BE REPAIRED, PLEASE LET ME KNOW. THANK YOU FOR YOUR TIME.

NHTSA complaint #724917 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

HAS OCCURING EHAUST LEAK, SERVICE WONT FIX. USING BRAKES WHILE SLOWING AND HITTING BUMP IN ROAD, BRAKES WILL PULSEATE VERY HARD AND VECHILE WILL NOT STOP

NHTSA complaint #712608 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

WHILE DRIVING AT 80MPH THE VEHICLE WILL SPORADICALLY GO OUT WHILE SWITCHING LANES, THEN KICKS BACK IN AFTER A FEW SECONDS. DEALER CAN'T SOLVE PROBLEM.

NHTSA complaint #848791 — an unverified report by a vehicle owner.