2011 CHEVROLET SILVERADO 3500 Engine Problems

CP4 high pressure fuel pump failed causing Loss of Motive Power (LOMP) in Oct of 2018. Truck became hard to steer and brake but I was traveling at a lower speed. Had it of been 1 hour later I would have been at freeway speeds pulling a 13000lbs trailer. I had the truck towed to a local dealer where they diagnosed the truck as having a failed CP4 high pressure fuel pump made by Bosch. They informed me that the entire fuel system would have to be replaced do to the large amount of metal contaminants that this catastrophic failure produces and spreads though out the entire system. The total cost for the repairs were not covered under any type of warranty or recall and had to be paid entirely out of pocket. Not only was this a huge inconvenience as I was trying to leave town for a vacation...

DIESEL EXHAUST FILTER (DEF) AND FLOW REDUCTION TUBE ON DURAMAX LML ENGINE. FAUTLY DEF REQUIRES EXTREMELY HIGH TEMPERATURES TO CLEAN - OR REGENERATE - CAUSING THE DEF AND REDUCTION TUBE TO FAIL. HIGH TEMPERATURES ARE A FIRE HAZARD TO VEHICLE AND GRASS OR OTHER TERRAIN OVER WHICH THE TRUCK IS PARKED. GM NO LONGER MANUFACTURES THE REDUCTION TUBE, GM PART NUMBER 25960609 FORCING THE CONSUMER TO WAIT FOR GM TO MAKE PART ON SPECIAL ORDER BASIS - OVER 30 DAYS - OR FORCE CONSUMER TO REMOVE DEF OR MAKE OTHER FABRICATION, ORDER TO OPERATE THE VEHICLE. GM IS AWARE VIA CUSTOMER SERVICE AND DEALER COMPLAINTS THAT THE LACK OF PART 25960609 AVAILABILITY IS A NATION-WIDE PROBLEM AND HAS A HIGH FAILURE RATE. GM STOPPED PRODUCTION AS A COST SAVING MEASURE. THE DURAMAX LML ENGINE IS IN SERVICE MOSTLY AS COMMERCIAL VEHICLE FLEET. THUS, THERE IS A HIGH PROBABILITY OF UNSAFE...

EXHAUST FLUID QUALITY POOR APPEARED ON THE DASH DISPLAY, SO I TOPED IT OFF WITH MORE FRESH DEF AND THE WARNING WENT AWAY.3 DAYS LATER THE SAME WARNING CAME BACK ON THE DASH DISPLAY ONLY WITH A NEW WARNING WITH IT THAT SAID VEHICLE SPEED WILL BE LIMITED TO 55MPH NEXT FUEL FILL, IT DID! I TOOK THE TRUCK TO THE DEALER THEY FOUND BAD NOX SENSORS 1&2.REPAIRS WHERE NOT DONE BECAUSE I FELT THAT SHOULD BE SOME SORT OF RECALL ON DEFECTIVE PARTS THAT CONTROLS THE DRIVABILITY OF A VEHICLE. ON FEB-4-2015 I RECEIVED A LETTER FROM GM AFTER 2 YEARS TELLING ME THAT MY TRUCK MAY HAVE NOX SENSORS THAT CAN BECOME CONTAMINATED AND THAT GM IS EXTENDING THE WARRANTY ON THE NOX SENSORS AND THE WIRE CONNECTORS FOR 10/YRS. 120.000 MILES WHICH EVER COMES FIRST. SO I GO BACK TO THE DEALER AND SHOW THEM THE LETTER...

NOVEMBER 19 2014 I WAS DRIVING TO WORK WHEN MY SERVICE EXHAUST FLUID SYSTEM DIC CAME ON, FOLLOWED WITH THE CHECK ENGINE LIGHT. IT WAS TAKEN TO OUR LOCAL DEALERSHIP AND THEY REPLACED ALL COMPONENTS OF THE DEF SYSTEM. THEN ON DECEMBER 11 THE EXHAUST FLUID SYSTEM DIC CAME ON AGAIN, BUT WITH THE MESSAGE THAT THE FLUID QUALITY IS POOR. ONCE AGAIN IT WAS TAKEN TO THE DEALER SHIP WHERE THEY DRAINED THE TANK AND REFILLED IT. THEN AGAIN ON DECEMBER 16 2014 THE EXHAUST FLUID DIC CAME ON AGAIN WITH FLUID QUALITY IS POOR. WILL ONCE AGAIN RETURN TO THE DEALERSHIP. *TR