2008 Cadillac DTS electrical system problems

“The contact owns a 2008 Cadillac DTS. The contact stated while driving at an undisclosed speed, the message "Alternator Not Charging" was displayed. The vehicle was taken to an independent mechanic where it was diagnosed that oil was leaking onto the alternator and exhaust manifold. The alternator was replaced. However, the contact stated while driving at various speeds, there was a significant amount of smoke coming from underneath the vehicle. There was no warning lights illuminated. Additionally, the contact noticed a trail of oil leak in the driveway. The dealer and the manufacturer were not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 87,000.”

“THE CAR GIVES OFF FALSE OIL PRESSURE INFORMATION ON CARS MESSAGE CENTER. I REPLACED THE SENSOR AS DISCRIBED, VERIFIED MY OIL LEVEL, CLEANED THE CONNECTOR TO OIL PRESSURE SENSOR AND STILL EVERY 2 OR 3 MINTUES I GET ENGINE OIL PRESSURE LOW, STOP VEHICHLE. WHEN I STOP THE OIL LEVEL IS GREAT AND THE OIL IS VERY CLEAN. THIS HAS BEEN GOING ON FOR OVER 3 MONTHS. IF THE OIL PRESSURE WAS LOW THE ENGINE WOULD HAVE SIEZED UP BY NOW. THIS IS ONGOING ISSUE WITH THESE 08 CADILLAC DTS 4.7L NORTHSTAR ENGINES.”

“REAR PASSENGER FUSE BLOCK (P/N 19116816) GETS MELTED BY A FAULTY FUSE PUMP RELAY BURNING UP DUE TO A FAULTY DESIGN WITHIN THE FUEL PUMP SYSTEM. FUEL PUMP PUTTING A LOT OF RESISTANCE ON THE WIRING, RELAY WON'T BLOW, BUT IT MELTS. WITHOUT CORRECTING THIS, THE FUSE BOX WILL BE AFFECTED ONCE THE FUSE PUMP RELAY OVERHEATS AND EVENTUALLY MELTS AND BURNS. CAR WAS STATIONED. THIS IS UNSAFE BY ANY MEANS. THE FIRE COULD HAVE SPREAD AND CAUSED THE SEATS TO BURN AND WORSE, IT'S RIGHT BY THE GAS TANK.”

“MY 2008 CADILLAC DTS WOUDL NOT START, I FOUND THE FUEL PUMP RELAY TO BE BURNT. I REPLACED AND WAS ABLE TO DRIVE FOR 150 MILES, SAME THING HAPPENED AGAIN. REPLACED THE RELAY AGAIN IN ORDER TO GET HOME. I THEN REPLACED THE FUEL PUMP, SAME THING HAPPENED. THEN I RESEARCHED THAT THIS IS A KNOWN PROBLEM AND THAT THE FUSE BOX UNDER THE REAR SEAT NEEDS TO BE REPLACED. FUEL PUMP RELAY KEEPS BURNING UP UNDER THE REAR SEAT, POTENTIAL FIRE HAZARD. IT WILL CONTINUE TO BURN UNTIL YOU REMOVE IT.”

“TL* THE CONTACT OWNS A 2008 CADILLAC DTS. THE CONTACT SMELLED A ROTTING ODOR INSIDE THE VEHICLE AND THE RADIO REMAINED IN VALET MODE. ALSO, THE TURN SIGNALS FAILED TO ACTIVATE CORRECTLY AND THE HEADLIGHTS FAILED TO ILLUMINATE TO FULL CAPACITY. THE CONTACT ALSO EXPERIENCED SEVERAL OTHER ELECTRICAL FAILURES WITH THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO LES STANDFORD CHEVROLET (LOCATED AT 21730 MICHIGAN AVE, DEARBORN, MI 48124, 313-444-7537), BUT IT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES AND STATED THAT THE VIN WAS NOT INCLUDED IN A RECALL THE APPROXIMATE FAILURE MILEAGE WAS 219,000.”

“2008 CADILLAC DTS (100K MI) WAS PARKED AND ENGINE WOULD TURN OVER BUT NOT START. I DETERMINED THAT THERE WAS NO FUEL TO ENGINE BY CHECKING SCHRADER VALVE ON FUEL RAIL. PROCEEDED TO CHECK FUEL PUMP (FP) FUSE (OK) AND FP RELAY (BURNED ON PIN 30 ALONG WITH FUSE BLOCK). REPLACED FP RELAY; HOWEVER, AFTER A FEW MINUTES FROM VEHICLE START, THE RELAY HEATS TO ABOUT 200 DEGREES F. AFTER READING SEVERAL FORUMS, THIS IS NOT UNCOMMON: IT APPEARS THE FUSE BLOCK (UNDER REAR SEAT ). IS DEFECTIVE. I HAVE ORDERED GM BLOCK 19116810 WHICH APPARENTLY SUPERSEDES THE ORIGINAL FACTORY GM BLOCK 13599106. THIS PROBLEM CLEARLY POSES MANY SAFETY ISSUES: FIRE, ENGINE SHUT DOWN WHILE DRIVING, ETC. GM NEEDS TO TAKE OWNERSHIP OF THIS PROBLEM. MOREOVER, I HAVE ALSO EXPERIENCED THE BURNED OUT CONNECTOR (UNDER PASSENGER SEAT) FOR THE HEATED SEATS. FORTUNATELY, I DID NOT HAVE THE HEATED WINDSHIELD WASHER OPTION WHICH ALSO EXPERIENCED ELECTRICAL ISSUES. SHAME ON GM FOR NOT CORRECTING THESE ENGINEERING DESIGN DEFECTS. SAFETY SHOULD BE PARAMOUNT WITH THESE TYPES OF ISSUES ON YOUR VEHICLES ESPECIALLY YOUR PREMIER BRAND (CADILLAC).”