1996 GMC SIERRA Fuel System, Gasoline Problems

WHILE DRIVING THE VEHICLE, THE ENGINE DIED. WHEN TAKEN TO THE DEALERSHIP WE WERE TOLD THE FUEL PUMP HAD BURNT UP AND THE WIRING BOOT HAD ALSO BURNT UP. THE TECHNICIAN IMPLIED THAT WE WERE LUCKY THAT THERE HAD NOT BEEN A FIRE. THIS IS THE SECOND TIME THAT A FUEL PUMP HAS FAILED IN THREE YEARS. *LA

AS FUEL PUMP BEGAN TO FAIL (INTERMITTENT STARTING PROBLEMS), IT CAUSED WIRES GOING TO FUEL PUMP (WIRES ARE INSIDE THE GAS TANK) TO OVERHEAT. THE FUEL PUMP CONNECTOR WAS COMPLETELY MELTED, AND THREE INCHES OF INSULATION ON EACH WIRE WAS BURNED OFF. BARE WIRES COULD SPARK AND IGNITE FUEL VAPORS.*AK

Mileage: 84,000

CONSUMER STATES HIS VEHICLE STALLS WHILE DRIVING WITH OUT ANY REASON, CAUSING TO PULL OUT OF THE ROAD. PROBLEMS IS DUE TO A FAULTY FUELS INJECTION. DEALER AND MANUFACTURES HAS NOT BEEN NOTIFIED. PLEASE PROVIDE FURTHER INFORMATION. TS

SINCE PURCHASING MY TRUCK, THERE HAS BEEN AN ONGOING PROBLEM WITH IT SIMPLY SHUTTING DOWN MID MOTION, CAUSING BRAKE AND STEERING FAILURE. THREE MONTHS AFTER PURCHASE THIS PROBLEM WAS DIRECTLY RESPONSIBLE FOR AN ACCIDENT (ON AN ICY ROADWAY) IN NH. I HAVE TAKEN THE TRUCK TO COUNTLESS GARAGES IN AN ATTEMPT TO REMEDY THE PROBLEM, TO NO AVAIL. I CONTINUE HEARING FROM SEVERAL MECHANICS; "FUEL INJECTION PROBLEM - A BAD YEAR FOR GMC ..." THE PROBLEM WAS ONLY OCCASIONAL AT THE START, AND TOLERABLE, BUT HAS GOTTEN PROGRESSIVELY WORSE - TO THE POINT WHERE I NO LONGER AM COMFORTABLE TAKING IT OUT OF THE YARD - YET I CONTINUE PAYING OFF A LOAN FOR A TRUCK I CANNOT TRUST. AGAIN, I HAVE DEALT WITH THREE DIFFERENT GARAGES (DIESEL), WITH COMPETENT MECHANICS, AND AFTER HAVING VARIOUS PARTS REPLACED - EVENTUALLY FIND MYSELF WITH THE SAME PROBLEM OCCURRING, AGAIN AND AGAIN.*AK

WHILE DRIVING FUEL PUMP STOPPED PUMPING FUEL,CAUSING ENGINE TO STALL OUT WITHOUT ANY WARNING.*AK

FUEL TANK SENDING UNIT AT THE POINT WHERE THE WIRES CONNECT TO FUEL PUMP ARE SHORTED TO GROUND POSSIBLY IGNITING FUEL VAPORS INSIDE TANK

COOLANT LEAKING FROM BACK OF INTAKE MANIFOLD,AUTO MECH. TELL ME THAT THIS IS A COMMON PROBLEM WITH THE VORTEX MOTOR, WHEN I TELL THE MECHANIC THAT MY TRUCK IS LEAKING ANTI-FREEZE ,EVERY MECHANIC HAS SAID THAT HE KNOWS JUST WHERE IT IS LEAKING AND THEY ARE RIGHT EVERY TIME; IS THIS A DEFECT IN THIS MOTOR AND WHAT CAN I DO ABOUT IT? THANKS R. MCLAUGHLIN. MC LAUGHLIN E

VEHICLE EXPERIENCING PROBLEM WITH ENGINE STALLING. VEHICLE TAKEN TO DEALER SHOP AND INFORMED CONSUMER THAT PROBLEM WAS DUE TO A DIESEL INJECTOR PUMP FAILURE. *AK

WIRING HARNESS MELTED AND WIRES SHORTED INSIDE FUEL TANK! EXPLOSION RISK.

HELLO, PURCHASED VEHICLE NEW 7/96, IN 9/96 IN CONVERSATION WITH A FLEET MECHANIC SINCE FUEL PUMP IS LOCATED IN GAS TANK I WAS ADVISED TO NOT GO BELOW 3/4 TANK OF FUEL TO PREVENT FUEL PUMP FAILUER ANY THING LOWER THAN 3/4 WILL NOT KEEP PUMP COOL AND LEAD TO FAILURE I FOLLOWED THE ADVISE. FAILURE #1 OCCURED IN 1997 "ORIGINAL PUMP" DONT REMEMBER EXACT DATE BUT DEALER REPAIRED. FAILURE # 2 (OF THE PUMP THAT REPLACED THE FIRST ONE), OCCURD MAR. OR MAY 1999 DEALER REPLACED. BOTH FAILURES RESULTED IN TOTAL SHUT DOWN. #1 OCCURED WHILE PARKED AND #2 OCCURED WHILE DRIVING IN THE CITY. RELATED ISSUE: IN JUNE 1999 FUEL FILTER REPLACED AFTER FAILURE. IN JULY 99 WHILE DRIVING IN CALIFORNIA AT HI WAY SPEEDS AND HEAVY TRAFFIC TRUCK WOULD TEMPORARILY SHUT DOWN (NO FUEL NO POWER) 6 TIMES IN A 100 MILE SPAN, RESEMBLED FUEL PUMP AGAIN HOWEVER IT NO LONGER ACTED UP AFTER PARKING FOR 24HOURS. I AM SCHEDULED TO TAKE VEHICLE IN FOR SEARCH OF PROBLEM NEXT WEEK. EXCELLENT DEALER SERVICE FOR REPAIRS , AND GOOD TRUCK, BUT AM CONCEARNED WITH THE FUEL DELIVERY SYSTEM SEEMS TO BE TYPICAL PROBLEM (FUEL PUMP FAILURE) WITH OTHER GMC AND CHEVY TRUCK OWNERS I WAS FORTUNATE NOT TO GET INTO AN ACCIDENT BUT THE POTENTIAL IS THERE, IE CONGESTED TRAFFIC ETC.

FUEL INJECTORS FAILED TWICE WITHIN SEVERAL WEEKS. THIS COULD HAVE CAUSED MY TRUCK TO HAVE AN ACCIDENT !!!

POSSIBLE FUEL SYSTEM FAILURE CAUSED THE MOTOR TO SHUT DOWN WHILE DRIVING. YH

POSSIBLE FUEL SYSTEM FAILURE CAUSED THE MOTOR TO SHUT DOWN WHILE DRIVING. YH

FUEL INJECTORS FAILED.

FUEL INJECTORS FAILED.

FUEL PUMP FAILED.

UPPER INTAKE MANIFOLD GASKET REPLACED DUE TO LEAK.