2001 Chevrolet Silverado 2500 complaints

I OWN A 2001 CHEVROLET 2500 HD TRUCK. I HAVE HAD BRAKE FAILURE 4 TIMES WITHIN THE PAST 3 YEARS DUE TO RUSTED BRAKE LINES. ONCE WHILE PULLING A HORSE TRAILER GOING UP AND DOWN HILLS. LUCKILY THERE WAS NO TRAFFIC IN FRONT ABLE TO COAST SAFELY TO THE SIDE OF THE ROAD. ANOTHER TIME WHILE DRIVING INTO THE CITY. SAME THING. LUCKILY NO ONE IN FRONT. AND RECENTLY WHILE DRIVING THE TRAILER AGAIN LOADED WITH HORSES THE LINE HAD RUSTED THRU AGAIN IN ANOTHER PLACE. THE TRUCK HAS BEEN INTO MIDAS IN FRANKFORT KENTUCKY 2 TIMES TO REPAIR RUSTED BRAKE LINES. THE OTHER TWO TIMES HAVE TAKEN TO A LOCAL MECHANIC. EVERY MECHANIC COMMENTS ABOUT THE RUST ON THE UNDERCARRIAGE. ALSO THE FACE PLACE FOR THE REAR AXEL THAT HOLDS THE OIL FOR THE REAR DRIVE HAS RUSTED THRU AND BEEN REPLACED ONCE BECAUSE THE LUBRICANT WAS LEAKING OUT OF IT. THIS WAS DONE THRU A CHEVROLET DEALER TWO YEARS AGO. THE PLATE IS AGAIN VERY RUSTED AND WHO KNOWS WHEN IT WILL HAVE TO BE REPLACED. THE TRUCK IS NOT DRIVEN VERY MUCH ANYMORE SINCE IT IS NOT RELIABLE. THE ONLY OTHER ALTERNATIVE THAT I HAVE IS TO REPLACE EVERY SINGLE BRAKE LINE WHICH IS TOO COSTLY FOR ME AT THIS TIME. I BELIEVE WITH ALL THAT I HAVE READ THAT THIS IS A RECURRING PROBLEM THAT CHEVY HAD WITH THEIR TRUCKS. THE TRUCK IS SITTING IN THE DRIVE RIGHT NOW WITH THE MOST RECENT BRAKE LINE FAILURE. THE MOST RECENT ONE GOES FROM THE DRIVERS FRONT WHEEL SIDE TO THE PASSENGER SIDE FRONT WHEEL. TOO MUCH RUST AND YOU NEVER KNOW WHEN THE BRAKES WILL FAIL WHEN RIDING IN THIS

TRUCK STALLED IN TRAFFIC IN DRIVE GEAR. WOULD NOT START WITHOUT A SHORT COOL DOWN PERIOD. THE CRANKSHAFT POSITION SENSOR WAS REPLACED BY G.M. *TR

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 65 MPH, THE ENGINE STALLED WITHOUT WARNING. THE CONTACT WAITED FOR ONE HOUR BEFORE THE VEHICLE WOULD RESTART AND RESUME NORMAL OPERATION; HOWEVER, WHILE TRAVELING THE STALLING FAILURE RECURRED. IN ADDITION, THE FAILURE OCCURRED ON A SEPARATE OCCASION AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THEY INFORMED THE CONTACT THAT THE CRANK SHAFT POSITION SENSOR WOULD NEED TO BE REPLACED. THERE WAS A RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 07V521000 (ENGINE AND ENGINE COOLING). THE VIN WAS EXCLUDED FROM THE RECALL. THE VEHICLE HAD NOT BEEN REPAIRED AT THE TIME OF THE COMPLAINT. THE FAILURE MILEAGE WAS 100,000.

WHILE DRIVING ON THE HIGHWAY AT 65MPH MY REAR TIRE HAD THE TREAD SEPARATE FROM THE TIRE. *TR

SUDDEN BRAKE FAILURE ON 2001 CHEVY 2500 PICKUP TRUCK WITH 70K MILES - HAD DEALER REPLACE RUSTED LINES OVER FUEL TANK TWO MONTHS AGO, CHECKED ALL BRAKE SYSTEMS AND DID NOT FIND ANY PROBLEMS. HAVE DRIVEN VEHICLE ABOUT 250 MILES SINCE REPAIRED. TODAY THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR WHEN STOPPING AT A 4-WAY STOP DOWNTOWN. ALMOST COLLIDED WITH ANOTHER VEHICLE BUT WAS ABLE TO AVOID THE VEHICLE AND PEDESTRIANS ON SIDE WALK. CHECKED BRAKE FLUID LEVEL AND IT IS NORMAL LEVEL. WILL HAVE VEHICLE TOWED BACK TO DEALER FOR REPAIRS. NO OBVIOUS LEAKS OR DAMAGE TO BRAKE SYSTEMS. *TR

TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING LESS THAN 5 MPH, THE CONTACT ENGAGED THE BRAKE PEDAL AND THE ANTI-LOCK BRAKE SYSTEM ACTIVATED INDEPENDENTLY. THE FAILURE WOULD OCCUR WHENEVER THE BRAKES WERE APPLIED AT LESS THAN 5 MPH. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE THE FAILURE WAS CONTRIBUTED TO THE SPEED SENSOR. THERE WAS A RECALL ASSOCIATED WITH THE NHTSA CAMPAIGN ID NUMBER 05V379000 (SERVICE BRAKES, HYDRAULIC: ANTILOCK). THE CONTACTS VIN WAS EXCLUDED FROM THE RECALL. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 92,000.

MY 2001 CHEVY WITH THE 8100 ENGINE WOULD STALL AT SPEED AND ALSO AT IDLE. THE AT-SPEED STALL WOULD RESTART ON ITS OWN WITHIN 3 OR 4 SECONDS. THE AT-IDLE STALL WOULD REQUIRE SOME ENGINE CRANKING BUT IT WOULD RESTART.(ODOMETER READING WAS 105,000KM)THERE IS A RECALL FOR THIS ENGINE (CRANK POSITIONING SENSOR)HOWEVER MY VIN IS OUTSIDE OF THE RECALL. DEALER NOT SURE WHAT TO DO. I HAD THEM REPLACE THE SENSOR AT MY EXPENSE. THIS MOVE RESOLVED THE STALL PROBLEM. IT HAS NEVER STALLED AGAIN. QUESTION: WHY WOULD MY VIN NOT BE INCLUDED IN THE RECALL....SAME SYMPTOMS ...SAME SOLUTION AS THE RECALL ! *TR

STARTING THE TRUCK START DRIVING AT DIFFERENT SPEEDS AND THE TRUCK JUST SHUTS DOWN. LET THE TRUCK SIT FOR A FEW MINUTES AND IT WILL RESTART. SEARCH THE INTERNET AND TALKED TO THE LOCAL DEALERSHIP MECHANICS AND THEY ALL SAID THAT THE CRANK SENSOR IS THE PROBLEM. *TR

NOISE AND EXHAUST LEAK. EXHAUST MANIFOLD NUTS BROKE ON 2001 CHEVY 6 LITER. ENGINE ONLY HAS 90,000 MILES. REPAIR COST OVER $1,000 TO FIX BOTH SIDES. *TR

TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING APPROXIMATELY 40-45 MPH, THE VEHICLE STALLED WITHOUT WARNING. HE WAS ABLE TO RESTART THE VEHICLE AS IT RESUMED NORMAL OPERATION. THE DEALER REPLACED THE BATTERY BUT TO NO AVAIL. THE CONTACT STATED THE FAILURE WOULD ONLY OCCUR IN DRY WEATHER CONDITIONS. THE VEHICLE WAS TAKEN TO THE DEALER SEVERAL TIMES BUT THE FAILURE PERSISTED. MOST RECENTLY, THE FAILURE RECURRED AND THE VEHICLE INDEPENDENTLY RESTARTED. THE DEALER ADVISED THAT THE CRANK SHAFT WOULD NEED TO BE REPLACED TO CORRECT THE FAILURE. THE VEHICLE WAS LEFT WITH THE DEALER WHERE THE CONTACT WAS AWAITING REPAIRS. THE CONTACT REFERENCED NHTSA CAMPAIGN ID NUMBER: 07V521000 (ENGINE AND ENGINE COOLING) BUT WAS UNABLE TO CONFIRM IF HIS VIN WAS INCLUDED IN THE RECALL. THE FAILURE MILEAGE WAS 50,000 AND THE CURRENT MILEAGE WAS 56,000.

WE WERE JUST HEADING DOWN OUR DRIVE ON VACATION TOWING OUR TRAVEL TRAILER WHEN MY HUSBAND COULD NOT STOP THE TRUCK. THE BRAKES HAD STOPPED WORKING. WE FOUND OUT THE BRAKE LINE HAD CORRODED AND WAS LEAKING BRAKE FLUID. WE TOOK THE VEHICLE TO A LOCAL REPAIR SHOP WHO FIXED THE BRAKE LINE AND WE CONTINUED ON OUR TRIP. WE RETURNED YESTERDAY AND MY HUSBAND MOVED THE TRUCK THIS MORNING AND ANOTHER CORRODED BRAKE LINE BLEW! I THANK GOD THIS DID NOT HAPPEN AS WE WERE DRIVING OUR TRAILER THROUGH THE MOUNTAINS OR OUR FAMILY WOULD NOT BE HERE TO TALK ABOUT IT. LOOKS LIKE WE WILL BE REPLACING ALL THE BRAKE LINES TODAY OUT OF CONCERN FOR OUR SAFETY. *TR

RUSTED BRAKELINES HAVE RENDERED MY TRUCK USELESS UNTIL REPAIRS CAN BE AFFORDED BECAUSE I SURE CANT GET TO THE ABS TO UNSCREW THE BACK BRAKE LINE ! BESIDE THE FACT THAT ONE WOULD THINK A 9 YEAR OLD TRUCK'S BRAKE LINE WOULD BE THE LAST THING TO WORRY ABOUT, THE ROCKER PANELS THAT WILL COST 5-6 THOUSAND TO FIX ACCORDING TO MACO HAVE ALSO FAILED AND HAVE RUSTED AWAY TO NEAR NOTHING. SO FOR THE SECOND TIME IN MY LIFE, I AM LEFT WITH A BEAUTIFUL TRUCK I HAVE TO CRUSH. PERHAPS IF I COULD AFFORD TO BE THE ORIGINAL OWNER FOR ONCE, THIS SORT OF THING WOULDN'T HAPPEN TO ME. GOOD LOOKING TRUCK, AWESOME ENGINE DESIGN, LOUSY METAL AND HARD TO SERVICE MAJOR COMPONENTS. I PAID $2500 TO REBUILD THE TRANSMISSION FOR THIS TRUCK ONLY TO HAVE MY 2001 2500 SILVERADO KILLED BY A BRAKELINE. I SUPPOSE I SHOULD HAVE TO BUY A NEW TRUCK EVERY 5 YEARS TO AVOID THIS SORT OF NONSENSE. *TR

WE WERE TRAVELING SOUTH ON I-5 WHEN WE STOPPED IN MEDFORD, OREGON TO FILL UP OUR 2001 CHEV. DURAMAX PICKUP WITH DIESEL. AFTER FILLING UP, WE NOTICED SMOKE AND A BURNT SMELL COMING OUT FROM UNDER THE HOOD. WE OPENED TO HOOD TO FIND WIRES SMOLDERING. WE IMMEDIATELY MOVED THE PICKUP AWAY FROM THE FUEL TANKS AT THE GAS STATION AND RE-OPENED THE HOOD. MY HUSBAND REMOVED THE PLASTIC SHROUD CONTAINING WHAT LOOKED TO BE ENCLOSED WIRES WHICH WERE SMOLDERING. I GOT THE FIRE EXTINGUISHER FROM THE GAS STATION ATTENDANT. AS MY HUSBAND WAS TRYING THE SEPARATE THE WIRES THAT WERE SMOLDERING WHICH WERE ALSO BURNING HIS FINGERS, FLAMES ERUPTED. WE USED THE FIRE EXTINGUISHER TO EXTINGUISH THE FLAMES. WE TOOK THE PICKUP TO THE DEALER IN JUNCTION CITY, OREGON (GUARANTY). THEY DIAGNOSED THE PROBLEM AS THE GLOW PLUG/INTAKE HEATER RELAY ASSEMBLY FAILURE WHICH CAUSED THE FIRE. IT WAS REPLACED WITH A NEW ONE. WE WERE EXTREMELY LUCKY THAT WE MOVED THE PICKUP AWAY FROM THE FUEL TANKS AT THE GAS STATION AND HAD A FIRE EXTINGUISHER FROM THE GAS STATION ATTENDANT HANDY AT THAT TIME. THERE WAS ALSO A TANKER TRUCK NEXT TO US FILLING UP THE UNDERGROUND GAS TANKS WHEN THE WIRES BURST INTO FLAMES. MANY LIVES COULD HAVE BEEN LOST BECAUSE OF THIS INCIDENT. WE WERE VERY LUCKY. IN MY OPINION, IF A PART FAILS ON A VEHICLE (WHICH I KNOW THEY DO), IT SHOULD NOT HAVE TO CATCH FIRE IN ORDER TO GET MY ATTENTION. *TR

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. WHILE DRIVING 65 MPH, THE VEHICLE STALLED AND THE BATTERY WARNING LIGHT ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT STATED THAT AFTER 10 TO 15 SECONDS THE VEHICLE WOULD START AND PERFORM AS IF THE FAILURE NEVER OCCURRED. THE VEHICLE ALSO STALLED AT A COMPLETE STOP AND AT TIMES THE VEHICLE FAILED TO RESTART. THE DEALER WAS CONTACTED AND STATED THAT HIS VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER: 07V521000, ENGINE AND ENGINE COOLING. THE FAILURE WAS DIAGNOSED BY A MECHANIC STATING THAT IT WAS THE CRANKSHAFT POSITION SENSOR THAT WAS FAULTY. NO REPAIRS WERE MADE WHEN THE COMPLAINT WAS FILED. THE FAILURE MILEAGE WAS 56000 AND THE CURRENT MILEAGE WAS 61900.

I HAVE JUST EXPERIENCED MY SECOND BRAKE FAILURE DUE TO CORRODED/ RUSTED BRAKE LINES IN MY 2001 CHEVY 2500HD. BOTH INCIDENTS INVOLVED NORMAL BRAKING SITUATIONS APPROACHING INTERSECTIONS. PERSONAL INSPECTION OF BRAKE LINES SHOWS A LEAK THIS TIME ABOVE THE GAS TANK THE REMAINDER OF THE LINES IN THE VEHICLE SHOW SIGNIFICANT AMOUNT OF RUST. *TR

TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH UPHILL, THE TRANSMISSION INDEPENDENTLY SHIFTED DOWN. THE VEHICLE WOULD NOT ACCELERATE AND THEN STALLED. THE CONTACT PARKED THE VEHICLE AND PROCEEDED TO A AUTO PARTS STORE WHERE HE PURCHASED CIRCLIP AND INSTALLED IT IN THE VEHICLE. HE WAS THEN ABLE TO GET THE VEHICLE TO SHIFT INTO FIRST AND SECOND GEAR. THE DEALER WAS NOTIFIED AND THEY STATED HE WOULD NEED TO REPLACE THE TRANSMISSION OR HAVE IT REBUILT AT HIS EXPENSE. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS NOT DRIVEN SINCE THE INCIDENT. THE FAILURE MILEAGE WAS APPROXIMATELY 150,000.

BRAKES WENT ALL THE WAY TO THE FLOOR. FOUND OUT THAT BRAKE LINE FROM MASTER CYLINDER TO PROPORTIONAL VALVE HAD RUSTED AND A HOLE HAD FORMED ALLOWING BRAKE FLUID TO LEAK OUT. SECOND BRAKE LINE RUSTED BUT INTACT. AM CURRENTLY LOOKING TO HAVE BRAKE LINES REPLACED. *TR

I WAS TRAVELING AT 40MPH AND ANOTHER VEHICLE PULLED OUT IN FRONT OF ME, I SLAMMED ON THE BRAKES AND AVOIDED AN ACCIDENT. I WENT TO USE MY BRAKES A FEW HUNDRED FEET DOWN THE ROAD AND THE PEDAL WENT TO THE FLOOR. UPON INSPECTION AFTER I GOT HOME A BRAKE LINE HAD BLOWN OUT, AFTER FURTHER INVESTIGATION I NOTICED THAT ALL OF MY BRAKE LINE ARE RUSTED VERY BAD TO THE POINT OF ALL OF THEM NEEDING TO BE REPLACES ASAP. THIS VEHICLE IS ONLY 9 YEARS OLD, I HAVE A CAR THAT WAS BUILT IN 1980 AND THE BRAKE LINES LOOK MUCH BETTER. THE FRAME OF THE TRUCK LOOKS PRETTY RUSTED AS WELL I THINK THERE IS A SERIOUS PROBLEM WITH THE BRAKE LINES OF CHEVY TRUCKS IN THE EARLY 2000 YEARS. *TR

DRIVING WHEN A DEER CROSSED IN FRONT OF MY VEHICLE. BRAKE HARD AND BRAKES WENT TO THE FLOOR. FOUND THE BRAKE LINES UNDER THE DRIVER SIDE RUSTED OUT. REQUIRES REPLACING ALL BRAKE LINES IN THE VEHICLE. SEVERE RUST ON ALL LINES. *TR

BRAKE LINE FAILURE DUE TO RUST THROUGH ON 2001 CHEVY SILVERADO 2500HD LED TO LOSS OF BRAKING AND NEARLY AN ACCIDENT. THE RESULTING LOSS OF THE VEHICLE FOR SEVERAL DAYS WHILE THE BRAKE LINES HAD TO BE COMPLETELY REPLACED AT A COST OF APPROXIMATELY $2000. *TR

REAR DISC BRAKE ROTORS ON 2001 CHEVROLET SILVERADO 2500 HD ARE RUSTING TO THE POINT WHERE THEY WILL HAVE TO BE REPLACED FOR A SECOND TIME AT 68,000 MILES. THE FIRST OCCURRENCE WAS 7/28/2005 AT 38,000 MILES, NOW AT 68,000 MILES, THE VEHICLE BRAKING PERFORMANCE HAS SEVERELY DEGRADED TO THE POINT WHERE IT FEELS LIKE IT'S BRAKING ONLY WITH THE FRONT DISC BRAKES. I WAS TOLD BY THE SERVICE PERSONAL THAT THE REAR ROTORS AND PADS WILL NEED TO BE REPLACED, NOT BECAUSE OF WEAR, BUT BECAUSE OF RUST. *TR

TL* THE CONTACT OWNED A 2001 CHEVROLET SILVERADO 2500 HD PICKUP. THE CONTACT STATED WHILE BRAKING FROM SPEEDS OF 5 MPH, A VEHICLE CRASHED INTO THE REAR OF HIS VEHICLE, CAUSING HIS VEHICLE TO CRASH INTO THE VEHICLE AHEAD OF HIM. THE BRAKE PEDAL WAS DEPRESSED BUT DID NOT ENGAGE AND THE FRONT AND REAR OF HIS VEHICLE SUSTAINED SUBSTANTIAL BODY DAMAGE. THE DEALER WOULD NOT PROVIDE ANY ASSISTANCE. THE FAILURE MILEAGE WAS 130,000 AND THE CURRENT MILEAGE WAS 134,000.

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 TRUCK. THE CONTACT WAS DRIVING 25 MPH WHEN HE ATTEMPTED TO APPLY THE BRAKES AT A TRAFFIC LIGHT, THE BRAKES FAILED, CAUSING A CRASH. THE AIR BAGS DID NOT DEPLOY. THE VEHICLE WAS TOWED TO A BODY SHOP. THE MECHANIC INSPECTED THE VEHICLE AND CONFIRMED THAT THE BRAKE LINES HAD RUPTURED. THE VIN WAS UNAVAILABLE WHEN THE COMPLAINT WAS FILED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 150,000.

THE CONTACT OWNS A 2001 CHEVROLET 2500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40MPH THE VEHICLE STALLED. THE FAILURE HAS OCCURRED APPROXIMATELY 15 TIMES. NO LIGHTS WERE ILLUMINATED DURING ANY OF THE FAILURES. THE VEHICLE WILL START WHEN PUT IN PARK AND RESTARTED. THE VEHICLE WAS TAKEN TO A GM DEALER AND WAS INFORMED THAT A RECALL WAS IN EFFECT, NHTSA CAMPAIGN ID NUMBER 07V521000, BUT THE OWNERS VIN IS NOT INCLUDED. THE VEHICLE HAS BEEN REPAIRED AT THE OWNERS EXPENSE. THE FAILURE MILEAGE WAS APPROXIMATELY 92,000. THE CURRENT MILEAGE IS 95,500. RD

2001 CHEVY SILVERADO 2500 HD 50,000 MILES HYDRAULIC BRAKE LINES ARE EXCESSIVELY RUSTED AND HAVE FAILED I AM NOW IN THE PROCESS OF HAVING TO REPLACE ALL BRAKE LINES FROM THE MASTER CYLINDER TO THE WHEELS. BRAKE LINES BROKE WHEN COMING TO A STOP. FRAME IS ALSO EXCESSIVELY RUSTED. IN NOVEMBER 2009 ALL ALLISON TRANSMISSION LINE WERE RUSTED THROUGH AND ALSO NEEDED TO BE REPLACED AS WELL AS THE COOLER COIL. *TR

TL* THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE APPROACHING A STOP LIGHT AT 25 MPH WITH THE BRAKES APPLIED, THEY WOULD NOT ENGAGE. THE VEHICLE PROCEEDED TO CRASH INTO ANOTHER VEHICLE. A VEHICLE OCCUPANT WAS INJURED AND TRANSPORTED TO THE HOSPITAL. THE VEHICLE SUSTAINED SUBSTANTIAL FRONT END DAMAGE. UPON FURTHER INSPECTION, THE FAILURE WAS CONTRIBUTED TO BRAKE LINE FAILURE. THE MANUFACTURER WAS NOT CONTACTED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 110,000.

WHILE PULLING IN THE DRIVEWAY, I STEPPED ON THE BRAKE PEDAL AND HAD VERY LITTLE BRAKING. I HAD TO APPLY EMERGENCY BRAKE TO KEEP FROM HITTING GARAGE. INSPECTION REVEALED THE FRONT BRAKE LINE HAD RUSTED THROUGH AND WAS LEAKING. *TR

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO. THE CONTACT WAS DRIVING APPROXIMATELY 35 MPH COMING TO A COMPLETE STOP. THE BRAKES WERE ENGAGED, FOLLOWED BY A HUMMING NOISE AND A NO POWER RESPONSE. THE BRAKE PEDAL BEGAN TO FADE AND THEN RESPONDED NORMALLY. THE CONTACT STATED THAT THERE WAS A FAILURE WITHIN THE BRAKE SYSTEM SENSOR. THE FAILURE OCCURRED WHENEVER ATTEMPTING TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER AND REPAIRED IN 2006. THE DEALER WAS NOTIFIED ON A SEPARATE OCCASION FOR THE IDENTICAL FAILURE AND REFUSED TO CORRECT THE FAILURE. THE FAILURE MILEAGE WAS 113,000. THE CURRENT MILEAGE WAS 118,000.

I WAS DRIVING ABOUT 25 MPH APPROACHING A RED LIGHT. I HIT BRAKES TO SLOW DOWN AS I APPROACHED THE REAR OF THE VEHICLE AHEAD OF ME (ALREADY STOPPED). THE BRAKES WERE FUNCTIONING PROPERLY, THEN WHEN I SLOWED TO ABOUT 5 MPH THE BRAKE PEDAL SUDDENLY WENT TO THE FLOOR AND THE BRAKES STOPPED WORKING AND I HIT THE VEHICLE AHEAD OF ME AT ABOUT 5 MPH. THE AIR BAGS DID NOT GO OFF. AFTER THE ACCIDENT MY BRAKES WORKED AND I DROVE HOME. MY MECHANIC AND MY INSURANCE ADJUSTER WERE BOTH FAMILIAR WITH THE PROBLEM. THEY SAID MY WHEEL BEARING HAD CORROSION AND IT CAUSED THE ABS SENSOR IN THE WHEEL BEARING TO NOT WORK PROPERLY AND TO DISABLE MY ABS BRAKING SYSTEM. *TR

LOW SPEED UNWANTED ANTILOCK BRAKE SYSTEM ACTIVATION. *TR

LOW SPEED UNWANTED ANTILOCK BRAKE SYSTEM ACTIVATION. *TR

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500HD. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE SUDDENLY STALLED WITHOUT WARNING. ON THE THIRD ATTEMPT, THE VEHICLE RESTARTED. THE FAILURE OCCURRED ON NUMEROUS OCCASIONS WHETHER THE VEHICLE WAS IN MOTION OR NOT. AN AUTHORIZED DEALER INFORMED HIM THAT THE PROBLEM COULD NOT BE DIAGNOSED WITHOUT AN INDICATOR LIGHT BEING ILLUMINATED. THE VEHICLE WAS TAKEN TO SEVERAL INDEPENDENT MECHANICS BUT IT WAS VERIFIED THAT NO DIAGNOSIS COULD BE GIVEN WITHOUT AN INDICATOR LIGHT. THE CURRENT MILEAGE IS APPROXIMATELY 81,000. THE FAILURE MILEAGE WAS APPROXIMATELY 52,000. UPDATED EVOQ 11/02/10

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500HD. WHILE DRIVING AT APPROXIMATE SPEEDS OF 50-60 MPH ON NORMAL ROAD CONDITIONS, THE ENGINE STALLED WITHOUT WARNING. THE CONTACT WAS ABLE TO RESTART THE VEHICLE WITHIN A FEW MOMENTS AND IT WAS TAKEN TO AN AUTHORIZED DEALER FOR FURTHER INSPECTION. THE DEALER REPLACED THE CRANKSHAFT POSITION SENSOR AT THE OWNERS EXPENSE. ALTHOUGH THERE WAS A RECALL ON HIS MODEL VEHICLE, THERE WERE NO RECALLS FOR HIS SPECIFIC YEAR (NHTSA CAMPAIGN ID NUMBER 07V521000: ENGINE AND ENGINE COOLING). THE CONTACT CONFIRMED THAT THE FAILURE HE EXPERIENCED WAS IDENTICAL TO THE FAILURES AS DESCRIBED IN THE RECALL CAMPAIGN. HE STATED THAT THE FAILURE WOULD OCCUR INTERMITTENTLY. THE FAILURE MILEAGE WAS 75,000. UPDATED 05/11/10.*LJ UPDATED 06/25/10*LJ UPDATED 08/30/10*JB

RUSTED BRAKE LINES. *TR

I HAVE A 2001 CHEVROLET 2500 SERIES TRUCK WITH AN 8.1 LITER ENGINE. I HAVE EXPERIENCED SEVERAL ENGINE STALLS WHILE DRIVING. AFTER A FEW MINUTES THE ENGINE WOULD RESTART. SINCE THE VEHICLE IS OFF WARRANTY AND I DO NOT HAVE A LOCAL CHEVROLET DEALER I HAD AN INDEPENDENT AUTO REPAIR SHOP ATTEMPT TO DIAGNOSE THE PROBLEM. THE COMPUTER WAS NOT PRODUCING CODES AND DIAGNOSIS WAS NOT POSSIBLE. AFTER SEVERAL ATTEMPTS OVER A FEW WEEKS A CODE WAS FINALLY PICKED UP INDICATING A "CRANKSHAFT POSITION SENSOR FAILURE" WHICH IS OCCURRING INTERMITTENTLY. I THEN DISCOVERED THAT GM HAD RECALLED MANY VEHICLES DUE TO THIS PROBLEM AND REPLACED THE SENSOR AS RECENTLY AS LAST YEAR. I CONTACTED GM ONLY TO FIND THAT EVEN THOUGH THE SYMPTOMS OF MY VEHICLE ARE IDENTICAL TO THOSE RECALLED, MY VIN # IS A FEW OUT OF THE RECALL SEQUENCE BUT GM MAY CONSIDER REPLACING MY SENSOR IF I GET A DIAGNOSIS AT A GM DEALERSHIP. HEREIN LIES MY PROBLEM. DUE TO THE INTERMITTENT NATURE OF THE FAILURE, DIAGNOSIS IS DIFFICULT. IT IT DOES NOT OCCUR WHILE AT THE DEALERSHIP I MUST DRIVE IT UNTIL ANOTHER TIME. I LIVE 35 MILES FROM THE DEALERSHIP AND TRAVEL EVEN FURTHER FROM THERE OFTEN. WHEN THE ENGINE STALLS I LOSE STEERING AND BRAKES. I AM RELUCTANT TO CONTINUE DRIVING BACK AND FORTH TO THE DEALERSHIP HOPING IT DOES NOT STALL IN TRAFFIC AS IT HAS IN THE PAST BUT STALLS AT A POINT THAT PRODUCES A CODE FOR THE DEALERSHIP. I HAVE A CODE DIAGNOSIS FROM AN INDEPENDENT SHOP AND I JUST WANT THIS SAFETY ISSUE RESOLVED JUST LIKE GM DID WI

BRAKES FAILED AND COST REPAIRS OF $2,000.00. FAILURE BY EXCESSIVE RUST. I PURCHASED MY 2001 CHEVROLET 2500HD 3/4 TON SILVERADO NEW 9/2001 FROM QUILGY'S CHEVROLET IN BALLY, PA. IT HAS BEEN GARAGED EVERYDAY AND HAS ONLY 2,700 MILES. *TR

TL*THE CONTACT OWNS 2001 CHEVROLET SILVERADO 2500. THE CONTACT WAS DRIVING APPROXIMATELY 40 MPH ON NORMAL ROAD CONDITIONS. THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE RESTARTED AND RESUMED NORMAL OPERATION. THE FAILURE OCCURRED INTERMITTENT. THE VEHICLE IS IN THE PROCESS OF BEING TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSTIC TESTING. THE FAILURE MILEAGE WAS 60,000.

CRANKSHAFT SENSOR DEFECTIVE. 2001 CHEVROLET 2500HD SILVERADO 8.1L VIN G VEHICLE HAS HAD A ON AND OFF PROBLEM WITH RUNNING ROUGH, ERRATIC SHIFTING, SERVICE ENGINE SOON LIGHT ON OR INTERMITTENT. TOOK TO THE DEALER BOUGHT FROM, NEVER ABLE TO FIND ANYTHING WRONG. SAID IT MIGHT BE CRANK SENSOR, BUT IF ITS RUNNING O.K. DON'T WORRY ABOUT IT. THIS PROBLEM STARTED IN APPROX FEB, 2004 AND WAS LAST AT THE DEALERS SPRING 2007. 3 DAYS IT WAS THERE AND THEY STILL COULD NOT EVEN SAY IF THERE WAS A PROBLEM. ENGINE LIGHT STILL ON. PROBLEM WITH THE ERRATIC SHIFTING, ROUGH RUNNING , ENGINE LIGHT ON CONTINUED UNTIL SEPT.2008 WHEN THE PROBLEM BECAME VERY SERIOUS. VEHICLE BEGAN TO STALL OR SIMPLY JUST QUIT RUNNING ALL TOGETHER. YOU WOULD BE DRIVING AT HIGHWAY SPEEDS OR JUST LOCAL DRIVING AND THE VEHICLE WOULD SIMPLY SHUT DOWN, LEAVING YOU WITH NO BRAKES OR STEERING. IT COULD NOT BE RESTARTED UNTIL YOU STOPPED, LET IT SIT FOR A SOMETIMES UP TO 10 MINS. VEHICLE WOULD DO THIS 2-3 TIMES A DAY, OR WEEKS BEFORE DOING IT AGAIN. IN JULY 2009 THE PROBLEM BECAME SERIOUS, WHERE THE VEHICLE WOULD JUST SHUT OF WHILE JUST SITTING AT RED LIGHTS OR STOP SIGNS. MY MECHANIC DID A SCAN AND DTC'S FOR CRANK SENSOR AND SEVERAL OTHERS CAME UP. IT WAS THOUGHT THAT EVERYTHING FROM BROKEN WIRES TO MODULES HAD TO BE CHECKED. I SUBSCRIBED TO A ONLINE VEHICLE REPAIR INFO SITE AND IMMEDIATELY FOUND A PRODUCT SAFETY RECALL #06083 12/11/2007 FOR VEHICLES WITH AN 8.1L V-8 ENGINE. THE VIN NUMBERS ON MY VEHICLE WERE HIGHER THAN THO

PULLING AWAY FROM A STOP LIGHT, THE MOTOR AND ELECTRICAL SYSTEM SHUT DOWN. I COASTED OVER TO THE SIDE OF THE ROAD -- CONSTITUTING A TRAFFIC HAZARD TO OTHER MOTORISTS- AND RE-STARTED THE VEHICLE. THERE WERE NO OTHER INCIDENTS THAT DAY. MY SON AND DAUGHTER IN LAW REPORT SIMILAR EXPERIENCES ON SEPARATE OCCASIONS. *TR

CORRODED STEEL BRAKE LINES RUSTED, CAUSED CATASTROPHIC LOSS OF BRAKING. *TR

CHEVY 2001 2500HD - I HAVE JUST OVER 25,000 MILES ON IT. AT 16,000 MILES I HAD TO REPLACE ALL THE ROTORS, ETC. BECAUSE OF RUST AND PITTING. THIS PAST SATURDAY, I RETURNED FROM A SHORT ERRAND AND I NOTICED SOMETHING DRIPPING FROM THE UNDERCARRIAGE IN MY DRIVEWAY. I CRAWLED UNDER AND NOTICE HOW PITTED AND CORRODED THE BRAKE LINES WERE. IT APPEARED THAT BRAKE FLUID WAS OOZING FROM THE LINES. LATER, I PUSHED ON THE BRAKE PEDAL TO SEE HOW BAD THE LINES WOULD BLEED AGAIN AND THE PEDAL WENT TO THE FLOOR - I COULD FEEL THE PRESSURE RELEASE - LIKE SOMETHING RUPTURED IN THE BRAKE SYSTEM. FORTUNATELY, I WAS IN MY DRIVEWAY AND NOT DRIVING AT THE TIME. *TR

THE BRAKE LINES ON MY 2001 CHEVY SILVERADO 2500 CREW CAB HAVE ALL RUSTED THROUGH BRAKE RUSHED OUT AND I WAS LEFT WITHOUT ANY BRAKES. STOPPED TRUCK WITH EMERGENCY BRAKE AND HAD IT TOWED. WHAT IF I HAD KILLED SOMEONE IS THAT WORTH THE EXTRA 40 DOLLARS FOR STAINLESS STEEL LINES. COME ON YOU ARE RESPONSIBLE FOR THE PUBLICS SAFETY. THIS PROBLEM IS WIDESPREAD. IT'S A CRAP SHOOT EVERY TIME YOU DRIVE. *TR

THE ABS RECALL WHEN I CALLED GM THEY TOLD ME MY TRUCK WAS NOT PART OF THE RECALL BUT IT DOES THE SAME THING THE RECALL WAS FOR AT ABOUT 10 MPH WHEN BRAKING THE ABS KICKS IN WHICH MAKES IT TAKE LONGER TO STOP( I DON'T KNOW WHEN IT STARTED I AM GUESSING WITH THE DATE). *TR

OUR 2001 CHEVY K2500 HD WAS PARKED, W/PARK BRAKE ON, AT THE TOP OF A MNT. PLATEAU WHEN IT ROLLED OFF THE TOP W/A 5 YR OLD BOY IN THE BED OF THE TRUCK, GOING 500 YDS BEFORE COMING TO A STOP. THE TRUCK HAD BEEN SITTING FOR APPROXIMATELY 10 MIN. AT AN IDLE BEFORE IT BEGAN TO MOVE. NO PREVIOUS PROBLEMS WITH THE PARK BRAKE FAILING EVER OCCURRED PRIOR TO THIS. OUR TRUCK WAS TOTALED DUE TO DAMAGE SUSTAINED IN THE ACCIDENT. THE 5 YR OLD BOY REMAINED IN THE BED OF THE TRUCK DURING THE RUNAWAY. HE BROKE HIS JAW IN THREE PLACES AND FRACTURED HIS RIGHT ARM IN TWO PLACES. HE SPENT 5 DAYS AT PRIMARY CHILDREN'S HOSPITAL IN SLC, UT. *TR

THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. ON JULY 24TH 2009, I HAD JUST MERGED INTO MODERATELY HEAVY TRAFFIC ON I-70 PULLING A 12,000 LBS. 5TH WHEEL CAMPER AND GAINING SPEED WHEN THE ENGINE SUDDENLY WITHOUT WARNING THE ENGINE STALLED. TRAFFIC FOLLOWING ME WHICH INCLUDED SEMI TRUCKS HAD TO MOVE TO THE CENTER LANE WHILE I PULLED OVER WITHOUT POWER STEERING TO THE RIGHT SHOULDER TO SLOW DOWN. THE ENGINE RESTARTED AFTER A BRIEF COOL DOWN PERIOD BUT I HAD NO IDEA AT THIS TIME WHY THE ENGINE HAD DIED. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. WHAT WAS DONE TO CORRECT THE FAILURE; I.E, PARTS REPAIRED OR REPLACED (AND IF OLD PART IS AVAILABLE), AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT BEING USED. I FEEL THAT GM DOES NOT HAVE CONTAINMEN

THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. SEPTEMBER 3RD 2009, ONCE AGAIN I WAS PULLING MY 12,000 LBS. CAMPER ALONG A STATE HIGHWAY 202 IN OHIO WHEN ONCE AGAIN THE ENGINE SUDDENLY STALLED AND I LOST ALL POWER TO THE ENGINE, POWER STEERING AND HYDRAULIC ASSISTED BRAKES. WE WERE GOING UP A HILL AND TRAFFIC BEHIND ME HAD TO SUDDENLY TAKE EVASIVE ACTION SINCE I WAS NO LONGER ACCELERATING AND WAS LOOSING SPEED AT A RAPID RATE. LUCKILY, THERE WAS JUST ENOUGH SHOULDER WIDTH THAT ALLOWED ME TO PULL OVER WITHIN 300 FEET. THE ENGINE RESTARTED AFTER A BRIEF COOL DOWN PERIOD BUT AGAIN I HAD NO IDEA AT THIS TIME WHY THE ENGINE HAD DIED. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. WHAT WAS DONE TO CORRECT THE FAILURE; I.E, PARTS REPAIRED OR REPLACED (AND IF OLD PART IS AVAILABLE),

THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. WHEN HAULING THE CAMPER THE TRANSMISSION WAS IN THE 'TOW / HAUL' MODE. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. THE ONLY COMMON FACTOR THAT I HAVE BEEN ABLE TO ISOLATE IS THAT THE FAILURES HAVE ALL OCCURRED WITHIN THE FIRST TWENTY MINUTES OF DRIVING. ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. ON SEPTEMBER 10TH 2009, WHILE TRAVELING ALONG A RURAL ROAD AND APPROACHING A TRAFFIC SIGNAL THE ENGINE SUDDENLY DIES WITHOUT WARNING. I WAS ABLE TO PULL OFF THE ROAD AND THE ENGINE RESTARTED AFTER A COUPLE OF MINUTE COOL DOWN PERIOD. THERE WERE NO SERVICE ENGINE SOON (SES) INDICATORS BEING SHOWN. I THEN BEGAN TO SEARCH THE INTERNET AND FOUND THIS IS A COMMON FAILURE MODE WITH GM TRUCKS THAT HAVE THE 8.1 L ENGINE FROM THIS PERIOD AND THAT A SAFETY RECALL (07V521000) WAS DONE ON CERTAIN VIN NUMBERS TO REPLACE A DEFECTIVE OEM CRANKSHAFT POSITION SENSOR. WHAT WAS DONE TO CORRECT THE FAILURE;, AT THIS TIME NOTHING HAS BEEN DONE TO CORRECT THE FAILURE AND THE TRUCK IS NOT BEING USED. I FEEL THAT GM DOES NOT HAVE CONTAINMENT OF THIS FAILURE AND THAT AD

THE EVENTS LEADING UP TO THE FAILURE, THIS FAILURE MODE HAS HAPPENED FIVE TIMES, TWICE WHILE PULLING A 12,000 LBS. CAMPER AND THREE TIMES DURING NORMAL DRIVING. THE FAILURE, THE 8.1 L ENGINE SUDDENLY LOOSES ENGINE POWER AND STALLS AND WILL NOT IMMEDIATELY RESTART. AFTER A MINUTE OR TWO THE ENGINE HAS RESTARTED AND NORMAL TRAVEL RESUMED. HOW OFTEN IT OCCURS, SINCE JULY 24TH 2009 THIS FAILURE HAS OCCURRED ON FIVE OCCASIONS. . ITS CONSEQUENCES, THERE HAVE BEEN NO CRASHES BUT SEVERAL NEAR MISSES HAVE BEEN ASSOCIATED WITH THE FAILURES. THE DAY OF SEPTEMBER 17TH 2009 HAD TWO FAILURES. THE FIRST OCCURRED WHILE TRAVELING ALONG DIVIDED STATE ROUTE AT 65 MPH WHEN THE ENGINE SUDDENLY STALLED BUT I WAS ABLE TO PULL OUT OF TRAFFIC AND RESTART THE ENGINE AFTER THE COOL DOWN PERIOD. THERE WERE NO SES INDICATORS BEING SHOWN. THE SECOND ENGINE FAILURE OCCURRED ON MY WAY HOME. I WAS A TRAVELING ALONG STATE ROUTE 35 WHICH IS A DIVIDED HIGHWAY BUT HAS A GREAT DEAL OF TRAFFIC ON IT. THIS HIGHWAY ALSO HAS SEVERAL STOP LIGHTS IN THE AREA OF BEAVERCREEK OHIO. I HAD STOPPED AT A RED LIGHT AND WHEN I STARTED TO ACCELERATE THE ENGINE SUDDENLY DIED. TRAFFIC BEHIND ME HAD STARTED TO ACCELERATE BUT SUDDENLY HAD TO TAKE EVASIVE ACTION TO AVOID HITTING MY STALLED VEHICLE. THE GROUP OF TRAFFIC THAT WAS BEHIND ME WAS ABLE TO GET AROUND ME LEAVING ME SITTING DEAD IN THE MIDDLE OF THE HIGHWAY WITH MY 4-WAY FLASHERS ON. FURTHER TRAFFIC WAS NOT PAYING ATTENTION AND ALMOST REAR ENDED ME WHILE I WAS STALLED. I PUSH

THE BOLT HEADS ON THE EXHAUST MANIFOLDS RUST OFF, THE MANIFOLD BECOMES LOOSE AND CAUSES A LEAK THAT COULD 1 CAUSE A FIRE OR CARBON MONOXIDE POISONING.. *TR

TL*THE CONTACT OWNS A 2001 CHEVROLET SILVERADO 2500 HD. THE CONTACT STARTED THE IGNITION AND THE VEHICLE MISFIRED AND EXHIBITED EXTREMELY LOW RPMS. ON SEPARATE OCCASIONS, THE ENGINE STALLED AND HESITATED. THE FAILURES OCCURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THEY STATED THAT THE CRANKSHAFT POSITION SENSOR FAILED. THE VIN WAS EXCLUDED FROM NHTSA CAMPAIGN ID NUMBER 07V521000 (ENGINE AND ENGINE COOLING), ALTHOUGH THE FAILURES WERE IDENTICAL. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS 19,300 AND THE CURRENT MILEAGE IS 19,325. THE CONSUMER STATED THE CODE READ A PROBLEM WITH THE CAMSHAFT POSITION SENSOR. UPDATED 08/14/09.*JB