2015 GMC SIERRA 1500 Complaints

OVER THE SUMMER THE DRIVERS SEAT IN MY TRUCK STARTED MAKING A CLICKING SOUND AND FELT LIKE THE BASE WAS SHIFTING, ALMOST LIKE A BOLT WAS COMING LOOSE AND THE BASE WAS SLIDING ON THE THREADS. I TOOK IT TO THE DEALER AND DESCRIBED WHAT WAS HAPPENING, THEY DROVE IT AND DECIDED THAT THEY NEEDED TO INSTALL A SHIM KIT TO REPAIR THE PROBLEM. THEY INSTALLED THE KIT AND NOW A FEW MONTHS LATER IT IS STARTING TO DO IT AGAIN. HOW SAFE IS IT TO HAVE SHIMS UNDER THE SEAT TO TIGHTEN THINGS UP WHEN THAT SEAT IS WHAT IT SUPPOSED TO HOLD YOU IN THE VEHICLE IN THE CASE OF A COLLISION. I AM TAKING IT BACK TO MY DEALER TO HAVE THEM RE-REPAIR IT BUT ARE SHIMS EVEN SAFE UNDER THE SEAT OR IS THIS JUST GMS MONEY SAVING SOLUTION TO GET CONSUMERS OFF THEIR BACK WHILE PUTTING THEIR SAFETY AT RISK?

I HAVE A 2015 GMC SIERRA PICKUP TRUCK, PURCHASED NEW IN FEBRUARY 2015. AS SOON AS I DROVE THE VEHICLE AT NIGHT, I NOTICED THAT THE HEADLIGHTS WERE VERY DIM ON BOTH LOW BEAM AND HIGH BEAM. AFTER RESEARCHING THE PROBLEM ON THE INTERNET, I FOUND A GM TECHNICAL SERVICE BULLETIN (#PIT5374) , WHICH INSTRUCTS THE TECH TO REPLACE BOTH HEADLIGHT BULBS, AND TO INCREASE VOLTAGE TO THE HEADLIGHTS VIA THE BODY CONTROL MODULE. I HAD THE DEALER PERFORM THIS TSB IN JUNE OF 2015, BUT SINCE THE UPGRADE, THE PERFORMANCE OF THE HEADLIGHTS IS ONLY SLIGHTLY BETTER. THE TRUCK IS UNCOMFORTABLE TO DRIVE AT NIGHT, AND ESPECIALLY DANGEROUS TO DRIVE AT NIGHT IN THE RAIN. IN ADDITION, ONE OF THE NEW HEADLIGHT BULBS BLEW LAST WEEK, BUT THE GMC DEALER REPLACED IT UNDER WARRANTY ONCE HE LOCATED A BULB AT ANOTHER DEALERSHIP IN TOWN.

THE HEADLIGHTS ON THE VEHICLE FAIL TO PROVIDE AN ADEQUATE LATERAL VIEW OF THE HIGHWAY AT NIGHT MAKING IT NEARLY IMPOSSIBLE TO SEE ANYTHING THAT MIGHT BE MOVING IN TO THE DRIVER'S PATH FROM THE LEFT OR NIGHT SIDES. LATERAL VIEW OF THE HIGHWAY IS NOT IMPROVED WHEN CHANGING FROM LOW BEAM TO HIGH BEAM OR VICE VERSA. THE ONLY WAY TO CAST ANY LATERAL LIGHT TO THE SIDES OF THE HIGHWAY IS TO UTILIZE THE FOG LAMPS WHICH CAN ONLY BE ACTIVATED WHILE USING THE LOW BEAM. THE LACK OF ADEQUATE LATERAL LIGHTING MAKES NIGHT DRIVING EXTREMELY UNSAFE AND NEARLY IMPOSSIBLE TO LOOK FOR ANIMALS OR HUMANS THAT MIGHT BE STEPPING IN FRONT OF THE DRIVER. THE ISSUE HAS BEEN ONGOING SINCE THE TIME THE VEHICLE WAS LEASED.

I PURCHASED THIS VEHICLE IN JUNE OF 2015. THE HEADLIGHTS IN THIS VEHICLE ARE ABSOLUTELY TERRIBLE AND EXTREMELY UNSAFE. NIGHT TIME DRIVING IS VERY DIFFICULT AND UNNERVING BECAUSE THE HEADLIGHT PERFORMANCE IS SO POOR. IF DRIVING AT NIGHT AND IT STARTS RAINING, FORGET IT. I HAVE TAKEN THE VEHICLE TO THE DEALER A HALF DOZEN TIMES AND THEY PERFORMED 1TSB WHICH MADE ALMOST NO NOTICEABLE DIFFERENCE.

DESIGN FLAW IN CABIN AIR FILTRATION SYSTEM LEADING TO HEALTH HAZARD WITHIN THE VEHICLE. MICE HAVE ENTERED THE COWL AIR PLENUM AREA AND BUILT NESTS ON TOP OF AND OUT OF THE CABIN AIR FILTER MATERIAL. THE FILTER HAS BECOME SATURATED WITH MOUSE DANDER, FECES AND OTHER MATERIALS. EVENTUALLY THESE CONTAMINANTS WORK THEIR WAY THROUGH THE FILTER AND AN ODOR IS NOTICED INSIDE THE VEHICLE. THE MICE ARE BELIEVED TO ENTER THIS AREA THROUGH SIGNIFICANT UNSCREENED OPENINGS AT THE ENDS OF A PLASTIC COVER OVER THE PLENUM IN THE WINDSHIELD WIPER AREA UNDER THE HOOD. I HAVE CONTACTED GM WITH REGARD TO THIS DESIGN FLAW. . SO FAR, MY DEALER HAS REPAIR THE DAMAGE AND INSTALL NEW CABIN FILTERS AT MY EXPENSES . WAS TOLD BY DEALER THIS WAS NOT COVERED UNDER WARRANTY NO ATTEMPT HAS BEEN MADE TO BLOCK OR SCREEN THE OPENINGS. THE TRUCK IS REGULARLY GARAGED WITH AN OTHER NON-GM VEHICLES THAT DO NOT HAVE THIS PROBLEM. INDIVIDUALS WITH RESPIRATORY CONDITIONS SHOULD BE CONCERNED ABOUT THE SIGNIFICANT PLENUM DESIGN FLAW IN THESE GM TRUCKS.

VEHICLE HAS A PULSING VIBRATION BETWEEN 45 AND 68 MPH. STARTED AT 3000 MILES. VEHICLE IS NOW AT 7500 MILES AND VIBRATION IS GETTING WORSE

HEADLIGHTS ON NEW 2015 GMC SIERRA DENALI 1500 TRUCK INADEQUATE - POOR LIGHTING PATTERN IN DARK DRIVING CONDITIONS - UNACCEPTABLE AND DANGEROUS. DEALERSHIP DENIED ISSUE, THEN STATED MANUFACTURER RECOMMENDS REDIRECTING LIGHTS DOWN TOWARD ROAD. THIS ADJUSTMENT DIDN'T RESOLVE THE DIM LIGHTING ISSUE. I SUGGESTED PAYING OUT OF POCKET TO REPLACE HEADLIGHTS - DEALERSHIP LAUGHED AND SAID THAT WOULD VOID THE WARRANTY. THESE DIM HEADLIGHTS ARE DANGEROUS.

HEADLIGHTS ARE THE WORST I'VE EVER SEEN. VERY UNSAFE TO DRIVE AND NIGHT AND EXTREMELY BAD IN THE RAIN.

THE HEADLIGHTS ON MY 2015 GMC SIERRA SLT ARE BY FAR THE WORST HEADLIGHTS I HAVE EVER EXPERIENCED IN THE MANY VEHICLES THAT I HAVE DRIVEN OVER THE LAST 30 YEARS. HOW THEY PASSED WHATEVER SAFETY STANDARDS THERE ARE SET IN PLACE IS BEYOND ME. THEY DO NOT PROVIDE A WIDE ENOUGH BEAM TO SEE AROUND TURNS OR WILDLIFE THAT MAY BE ON THE SIDE OF THE ROADWAY NOR DO THEY LIGHT UP ENOUGH OF THE ROAD IN DISTANCE TO SEE ANYTHING AT ALL BEYOND APPROXIMATELY 50 FEET WHILE TRAVELLING IN THE DARK. THIS VEHICLE IS UNSAFE TO BE DRIVEN AT ANY SPEED DURING THE DARK. SADLY THE HIGH BEAMS ARE COMPLETELY USELESS AS WELL. THERE IS MORE LIGHT OUTPUT WITH THE LOW BEAMS ON IN CONJUNCTION WITH THE FOG LIGHTS (WHICH ISN'T SAYING MUCH) THAN THERE IS WITH THE HIGH BEAMS ON. DRIVING IS THE RAIN IS EVEN WORSE. YOU CANNOT EVEN TELL THAT THE HEADLIGHTS ARE ON THAT'S HOW BAD THEY ARE. I HAVE COMPLAINED SEVERAL TIMES TO TWO DIFFERENT DEALERS AND GM DIRECTLY AND WAS TOLD "THAT'S JUST HOW THEY ARE AND THERE IS NOTHING THAT CAN BE DONE ABOUT THEM". I WAS GIVEN A 2016 SIERRA AS A LOANER VEHICLE WHILE I HAD MY VEHICLE IN FOR THIS AND SEVERAL OTHER ISSUES AND THE HEADLIGHTS ON THE 2016 VEHICLE THEY LOANED ME ARE A BIG IMPROVEMENT OVER THE 2014-15 LIGHTS. GM SHOULD BE FORCED TO RECALL ALL 2014-15 SIERRAS DUE TO THESE SEVERELY HAZARDOUS HEADLIGHTS AND FORCED TO INSTALL THE LIGHTS THAT COME ON THE 2016-17 SIERRAS.

FIRST OF ALL THE HEADLIGHTS ARE VERY DIM AND AT NIGHT CANNOT SEE NOTHING.DEALER SAID IT IS WHAT IS .VERY BAD !! ALSO MY SIERRA ON WINDOW STICKER STATES COMES WITH ALL TERRAIN TIRES IT DOES NOT HAVE ALL TERRAIN TIRES . THEY ARE 265/65/R18 GOODYEAR WRANGLER SRA .I WORKED FOR GOODYEAR AND THOSE TIRES ARE ALL SEASON !!! NOT ALL TERRAIN AS SPECIFIED ON WINDOW STICKER !! I TALKED TO DEALER AND CALLED CUSTOMER SERVICE AT GM THEY NEVER CALL BACK AND THEY SAID THOSE ARE THE RIGHT TIRES.THEY ARE NOT ACCORDING TO MY ATTORNEY WHO STATES THE WINDOW STICKER IS TOTALLY INCORRECT AND IS FRAUDULENT CHECK YOUR TIRES AND WINDOW STICKERS AND COMPARE AND LOOK ON GOODYEARS WEBSITE YOU WILL SEE.ALSO MY TRANSMISSION CLUNKS AND KNOCKS AND SHIFTS INCORRECTLY DEALER STATES ITS NORMAL I SPEND 40K ON A NEW TRUCK AND ALL I HAVE ARE PROBLEMS AND GM DOES NOTHING. IT DOWNSHIFTS HORRIBLE WHAT CAN I DO???