2015 GMC YUKON Unknown Or Other Problems

I bought a car in early 2024 ive had it for 1.5y I recently went to trade it in for something more suitable for me and they ran a carfax and mileage rollback popped up and I had no clue to begin with. They rolled back 100,000 miles on the vehicle. They’re blaming the finance company but they can’t because the finance company never had the vehicle in there possession

Steering jerks sometimes transmission would not go into gear just raves up and then there’s times when it drive normal transmission bangs shifts hard stutters late shift driver assist blocked

“Service Trailer Brake System” indicator light and alert continue happening. As of this weekend, my rear driver side taillight has begun going in and out/off and on.

I was driving down the highway and out of no where I hear this loud kaboom! I ducked thinking something just hit me and pull over but here glass tinkling around. I automatically know it is my sunroof so I get out and look and my sunroof exploded. (Looked like it was pushed up.) Luckily I had the inside part shut or I and my passenger would have been covered in glass.

THE TRAILER BRAKE SYSTEM DISPLAYS ON DASH EVERY 10 SECONDS, KEEPS ON DINGING LOUD AND WILL NOT CLEAR WHILE IM DRIVING.. IT JUST STARTED OUT OF KNOWHERE AND I NEVER USED THE TRAILER SYSTEM OR TOWED ANYTHING SINCED I PURCHASED THIS TRUCK. I SAW SEVERAL COMPLAINTS ON THIS SAME ISSUE/PROMBLEM. i JUST SPENT NEARLY $800 ON FRONT BRAKES AND ROTORS. I SHOULDN'T HAVE TO COME OUT OF POCKET TO GET THIS RESOLVED. GM NEEDS TO FIX THIS PROBLEM!!! LIKE I MENTION, I NEVER USED THE TRAILER SYSTEM AT ALL AND NEVER WILL. I DRIVE A 2015 YUKON DENALI SUV, BEEN HAVING PROBLEM ALSO WITH THE JERKING OF THE VEHICLE WHEN ITS PUT IN DRIVE. THE DEALER SAYS THAT THIS IS NORMAL, SOAGAIN SOMETHINGS NOT RIGHT.

I was driving my 2015 GMC Yukon a light illuminated on the dashboard. I pulled over at a Convenience store. Got my children out of the car. Once out of the vehicle I noticed smoke. Within the matter of 2 mins the truck was engulfed in flames.

Air conditioning stopped working.

At certain speeds my vehicle vibrates, like a grinding sound at speeds between 50-55. This is a safety risk because I have children and grandchild that frequently ride with me. I have taken my vehicle back to the dealership and they say it is no codes and send it back to me without fixing the problem. My vehicle has not been inspected by anyone except the GM dealership. I got my vehicle Nov. 2018 and this started happening between Dec. 2018 and Jan. 2019. My check engine light did appear and was flashing around this time. In 2019 I had to replace the rear shocks and I believe they are not working properly now.

PURCHASED A 2015 YUKON DENALI BACK IN NOVEMBER 2019. SINCE PURCHASING THE VEHICLE WE HAVE HAD TO REPLACE THE BATTERY, TRANSMISSION, AC COMPRESSOR AND EXPANSION VALVE (WHICH STILL ISN'T WORKING CORRECTLY, BECAUSE IT DOESN'T BLOW COLD AIR), AND THE BLACK PANELS THAT ARE IN BETWEEN THE WINDOWS. ALSO, BOTH TAIL LIGHTS HAVE DECIDED TO QUIT WORKING.... WHICH CONCERNS ME GREATLY BECAUSE CARS BEHIND ME DON'T KNOW WHEN I AM STOPPED OR APPLYING THE BREAKS. STOPPED OR HAVE MY FOOT ON THE BREAK.

ONSTART NOT WORKING PROPERLY. CANNOT ACCESS GPS AND/OR CERTAIN FUNCTIONS IN THE GMC APPLICATION DUE TO NO ANTENNA SIGNAL BEING OBTAINED THROUGH INTELLILINK SYSTEM. ONSTAR MIRROR HAS A RED LIGHT AND GPS HAS A CROSS HATCH THROUGH IT. WE HAVE ACTIVATED ONSTAR PROFILE AND SUBSCRIPTION. I KNOW THEIR HAS BEEN A RECALL ON THIS ANTENNA IN THE PAST BUT WE JUST PURCHASED THE VEHICLE.

WHILE DRIVING APPROXIMATELY 60 MPH ON A DESERTED FLAT STRETCH OF ROAD SURROUNDED BY FARMLAND, MY SUNROOF SUDDENLY EXPLODED. THE SCREEN WAS OPEN TO PROVIDE LIGHT BUT THE GLASS WAS SHUT. NO OTHER CARS WERE NEARBY NOR WERE ANY HILLS WHERE A ROCK COULD FLY FROM. IT WAS JUST SUDDEN. IT SOUNDED LIKE A LOUD EXPLOSION AND SUDDENLY GLASS WAS FLYING ALL OVER THE CAR. FORTUNATELY, I DIDN'T CRASH THE CAR. MYSELF AND MY SON WHO WAS IN THE PASSENGER SEAT, WE WERE BOTH COVERED IN GLASS. *TR

THE LED BRAKE LIGHTS ON MY PASSENGER SIDE ARE MALFUNCTIONING AND IT SEEMS TO BE A COMMON THEME FOR YUKON OWNERS. I HAVE CALLED 5 DIFFERENT DEALERSHIPS AND THEY ARE ALL OUT OF THIS PART BECAUSE IT KEEPS FAILING

A FEW DAYS AGO I GOT OUT OF MY TRUCK TO RETRIEVE A PACKAGE LEFT AT MY GARAGE DOOR. I PUT MY VEHICLE IN PARK WALKED AROUND MY CAR DOOR WALKED BY THE FRONT OF MY TRUCK TO RETRIEVE THE PACKAGE AND ALL THE SUDDEN I WAS KNOCKED DOWN. I DID NOT REALIZE WHAT HAPPENED UNTIL I LOOKED UP AND SAW MY TRUCK DRIVING TOWARDS ME. I SCREAM FOR HELP AS I CRAWLED BACKWARDS TO SAFETY. A FEW MINUTES LATER I REALIZE THE TRUCK WAS NO LONGER MOVING AND BY THE GRACE OF GOD MY WHEELS WERE TURNED SLIGHTLY AND IT HAD STOPPED BECAUSE IT HIT THE SIDE OF MY HOUSE. IT TOOK A COUPLE OF DAYS FOR THE SHOCK TO WEAR OFF OF WHAT COULD HAVE HAPPENED TO ME OR MY KIDS IF THEY WERE PLAYING OUTSIDE. MY HUSBAND AND I SPOKE TO A COUPLE OF PEOPLE INCLUDING A...

AFTER NO APPARENT IMPACTS OR EXTERNAL DAMAGE, THREE DIFFERENT LIGHTS HAVE FAILED OR BECOME ENDANGERED BY WETNESS. FIRST A TAIL LIGHT ASSEMBLY HAD TO BE REPLACED FOR $827, THEN THE 3RD BRAKE LIGHT FOR $280, AND NOW THERE IS WETNESS VISIBLE INSIDE A HEADLIGHT (COSTING SOMETHING LIKE $900 TO REPLACE). *BF *JB *BF*JB

MY AIR CONDITIONER IS OUT! IN THE MIDDLE OF SUMMER IN GEORGIA! I HAD IT DIAGNOSED FROM SOMEONE I TRUST AND FROM THE DEALER, BOTH SAID ITS A CRACK WHICH CAUSES THE REFRIGERANT TO LEAK AND LOSE PRESSURE. THERE HAS BEEN EXACTLY ZERO DAMAGE OR ANY FOREIGN OBJECT THAT CAUSED THIS. WE KNOW IT IS A DEFECTIVE PART THAT GM USES. ALSO, MY REAR PASSENGER TAIL LIGHT IS OUT AND HAS TO BE REPLACED TO THE TUNE OF ABOUT $600. THIS TOO IS A COMMON PROBLEM WITH THESE VEHICLES THAT IS DUE TO A DEFECTIVE PART THAT GM USES. I HAVE 2 FRIENDS WITH THE SAME YEAR MODEL VEHICLE AND THEY BOTH HAVE HAD THIS PROBLEM. AGAIN, NO OUTSIDE INFLUENCE SUCH AS DAMAGE OR FOREIGN OBJECT HAS CAUSED THIS. I BOUGHT AN EXTENDED WARRANTY WHEN I PURCHASED THE CAR. I CALLED TO HAVE THE REPAIR FOR A/C COVERED BUT MY...

BRAKE LIGHT IS WILL NOT WORKING ON PASSENGER SIDE

TAIL LIGHT KEEP GOING OFF, DEALER WONT FIX IT UNDER WARRANTY, THEY $700 WHEN ITS A MANUFACTURE ISSUE, SOMETHING WRONG THAT KEEP BURNING THE LED LIGHTS.

MY VEHICLE HAS A CRACK IN THE COMBI-COOLER AS DESCRIBED IN NHSTA REFERENCE NUMBER: N162080780 AND GM SPECIAL COVERAGE ADJUSTMENT 17336. IN THE DOCUMENTATION FOR THE SPECIAL COVERAGE IT STATES THAT THE COVERAGE PERIOD IS 5 YEARS OF 60,000 MILES BASED ON THE DATE THE VEHICLE ENTERED SERVICE. THIS VEHICLE WAS A GM EXECUTIVE VEHICLE UNTIL PURCHASED WITH 15102 MILES VIA THE GM PEP PROGRAM. GM IS NOT INCLUDING MY VEHICLE EVEN THOUGH IT IS CLEARLY STATED IN THE COVERAGE SINCE THEIR SYSTEMS DO NOT ACCOUNT FOR A VEHICLE THAT ENTERS SERVICE WITH THIS MANY MILES. I BELIEVE THIS IS A VIOLATION OF THEIR AGREEMENT WITH NHTSA AND REQUEST THAT NHTSA INVESTIGATE THE TOTAL NUMBER OF AIR CONDITIONING CONDENSER UNIT FAILURES USED IN SUCH VEHICLES TO IDENTIFY IF A FULL FLEDGED RECALL IS WARRANTED.

MY LIFT GATE FAILED TO CLOSE WHILE AT GROCERY STORE. IT WAS STUCK IN RAISED /OPEN POSITION. COULD NOT CLOSE MANUALLY. I HAD TO DRIVE HOME AND TO GMC SERVICE CENTER W/ LIFT GATE RAISED. THERE IS A GMC RECALL BULLETIN ON FILE14300A BUT MY VEHICLE VIN # IS NOT TAGGED, INOPERABLE LIFT GATE. I WAS ADVISED BY SERVICE MANAGER, MY LIFT GATE MOTOR HAD TO BE REPLACED. THIS IS MY 3RD CHEVY/GMC SUV AND MY FIRST TWO SUBURBANS HAD OVER 250K MILES AND NEVER HAD AN ISSUE W/ MY LIFT GATE. MY YUKON HAS ONLY 114K MILES, WELL TAKEN CARE OF AND THE LIFT GATE FAILS ME. THE EXISTING RECALL SHOULD APPLY TO MY REPAIRS, ESTIMATE COST $700.00.

REAR TAIL LAMP AT BRAKE LIGHT WORK INTERMITTENTLY. IT IS KNOWN THAT THE CIRCUITRY CONNECTING THE LEDS BREAK.

THE AIR CONDITIONING HAS FAILED IN BOTH OF THE YUKON'S WE OWN SO WE DECIDED TO TAKE ONE OF THEM TO A FRIENDS BODY SHOP WHO DISCOVERED THAT THE CONDENSER DESIGN IS ASSEMBLED TO THE VEHICLE FRAME WITH THE PIPE ENTERING THE CONDENSER IN COMPLETELY RIGID STATE MEANING THAT WHEN THERE IS FLEX TO THE VEHICLE FRAME THE PIPE DOES NOT MOVE AND THUS CRACKS OVERTIME FROM THE CONDENSER, MAKING THE CONDENSER LEAK AND RENDERING THE AIR CONDITIONING USELESS. WE WERE TRAVELING IN SOUTH CAROLINA WITH A 11 MONTH OLD, A 2 YEAR OLD AND A TEN YEAR OLD. WE PULLED OVER SO MY BOYFRIEND COULD RUN INTO A PIGGLY WIGGLY TO GRAB SOME GROCERIES AND I STAYED IN THE CAR WITH THE KIDS. THE AIR WAS RUNNING AND WITHIN MINUTES THE CAR SUDDENLY BECAME VERY WARM AND UNCOMFORTABLE AND I IMMEDIATELY CHECKED THE AC AND IT WAS RUNNING BUT...

THE AC CONDENSER STOPPED WORKING. THIS IS THE SECOND TIME IT HAS BEEN REPLACED. FIRST UNDER WARRANTY, SECOND IS NOT. IT IS FUNNY HOW EVERY PERSON AT DEALERSHIP SERVICE DEPARTMENT KNOWS THE CONDENSER IS A FAULTY PRODUCT, BIT GMC WON'T RECALL. EVEN NON GMC REPAIR SHOPS KNOW THIS.

THE SUNROOF OF MY 2015 GMC YUKON SPONTANEOUSLY SHATTERED WHILE DRIVING DOWN THE HIGHWAY AT NORMAL SPEED WITH A FEW NORMAL SIZED VEHICLES AND NO OVERPASSES NEARBY.

AIR CONDITIONER HAS FAILED FOR THE THIRD TIME IN 18 MONTHS WE'VE OWNED THIS VEHICLE. FIRST REPAIR 18 MONTHS AGO RESULTED IN "DEFECTIVE AIR CONDITIONING LINES" THAT WERE LEAKING, AND WAS REPLACED BY DEALERSHIP (COVERED BY AFTERMARKET EXTENDED WARRANTY). SECOND FAILURE OCCURRED JUNE 2018, AND SAME DEALERSHIP STATED COMPRESSOR DEVELOPED CRACKS AND HAD TO BE REPLACED (FORTUNATELY STILL UNDER AFTERMARKET EXTENDED WARRANTY). NOW, BEGINNING OF NOVEMBER 2018, SYSTEM HAS FAILED FOR A THIRD TIME AND IN LESS THAN 5 MONTHS FROM THE LATEST "REPAIR", AND UNFORTUNATELY MY EXTENDED AFTERMARKET WARRANTY HAS EXPIRED. I CAN UNDERSTAND A SYSTEM FAILURE ONCE, HAVE A DIFFICULT TIME WITH A SECOND FAILURE OF THE SAME SYSTEM WITHIN 3 YEARS, BUT QUESTION THE DEALERSHIP'S ABILITY TO DIAGNOSE AND FIX A PROBLEM AFTER A THIRD FAILURE IN AS MANY YEARS OF THE SAME SYSTEM. ABSOLUTELY LOVE THE VEHICLE ITSELF, BUT QUESTIONING GM'S RELIABILITY AND CUSTOMER SERVICE. I...

ON JULY 13 OF 2018 AC IN MY VEHICLE STARTED TO BLOW HOT AIR, I WAS WITH MY 3 YEAR OLD, DURING THIS DAY IT WAS 98 DEGREES OUT, MY HUSBAND TOOK THE CAR TO REPAIR SHOP AND THEY FOUND A LEAK IN THE CONDENSER, APPERANTLY THIS IS A KNOWN PROBLEM FOR MANY GM VEHICLE WITH 5.3 L V8 ENGINE FROM 2014 AND UP, WHEN WE CALLED LOCAL GM DEALERS THEY WERE AWARE OF THE AC PROBLEMS ON THESE CARS, WE WERE TOLD THAT AC LINES DEVELOP A CRACK AND FREON LEAKS OR AC CONDENSER STARTS LEAKING FREON AND IN OUR CASE IT'S A CONDENSER, AFTER DOING A RESEARCH ON THE INTERNET AND READING ON THE GM FORUMS MANY OWNERS HAVE THESE LEAKS DUE TO BAD DESIGN OF AC COMPONENTS, IT'S OBVIOUS THAT GM SHOULD ISSUE S RECALL BECAUSE TOO MANY VEHICLES HAVE SAME ISSUE, AND SINCE OUR WARRANTY HAS...

AIR CONDITIONER CONDENSER WENT OUT AND IT COST $944.00 ON A VEHICLE THAT IS ONLY 3 YEARS OLD AND HAS ONLY 65000 MILES ON IT.

GM KNOWS THEY HAVE BAD AIR CONDITIONER CONDENSER IN 2015-2016 MODELS. YET STILL NO RECALL DONE. MANY COMPLAINTS AND NOTHING BEING DONE ABOUT IT. NEW VEHICLES AND VEHICLES JUST OUT OF WARRANTY. THIS IS THERE PROBLEM, SO MUCH PARTS ARE ON CONTINOUS BACKORDER. THESE ARE $50,00.00 VEHICLES AND I SHOULD NOT BE STUCK WITH THIS. I AM CONTACTING THE BETTER BUSINESS BUREAU AND HAVING THE OTHER 6 CASES I KNOW OF AS WELL

AIR CONDITIONER CONDENSER GAVE OUT IN THE HEAT OF THE SUMMER ON A YUKON DENALI WITH 42,000 MILES. I HAVE HAD NO AIR CONDITIONING IN 90 PLUS DEGREE HEAT

HAD 30,000 MILES AND MY STEERING COLUM WAS MAKING POPPING NOISE. THE DEALERSHIP TRIED TO JUST REPAIR THE BEARINGS BUT IT ONLY WORKED FOR 2 WEEKS. THEY HAD TO REPLACE THE WHOLE STEERING COLUM. BRAKES ARE SQUEAKING FOR NO REASON HAD LES SCHWANN CHECK THEM AND STILL CAN'T FIGURE IT OUT. MY A/C NOW QUIT WORKING. STRUTS IN HATCH ALSO HAD TO BE REPLACED AND PASSENGER WINDOW MOLDING IS COMING OFF.

A/C CONDENSER LEAKING

THE AIR CONDITIONER CONDENSER FAILED. THE PART IS ON BACKORDER AND I HAVE NO AIR CONDITIONING FOR AN UNDETERMINED AMOUNT OF TIME. NO ETA ON THE PART AND THEY WILL REPLACE THE PART WITH THE SAME FAULTY MODEL. NO LOANER CAR, NO AIRCONDITIONING.

THE AIR CONDITIONER CONDENSER FAILED 1ST WEEK OF JUNE 2017 AND THE PART IS NOT AVAILABLE ANY WHERE IN THE COUNTRY. THE VEHICLE IS DANGEROUS TO DRIVE WHEN IT RAINS BECAUSE THE WINDOWS FOG OVER AND ARE UNABLE TO CLEAR WITH AIR SYSTEM,

AC QUIT WORKING & DEALER SAID IT'S A BAD CONDENSER, WHICH PART IS UNAVAILABLE DUE TO NATIONAL BACK ORDER. CAN'T TELL ME WHEN THEY CAN GET PART TO FIX. OBVIOUSLY THIS IS A MAJOR DEFECT ON GM BEHALF & THEY'RE DOING NOTHING ABOUT IT. NOT EVEN A RECALL!

MY A/C STARTED BLOWING HOT AIR A FEW WEEKS AGO. I TOOK IT IN TO MY GMC SERVICE DEPARTMENT, AND THEY ADVISED ME IT WAS THE CONDENSER THAT NEEDS TO BE REPLACED, HOWEVER THAT PART IS ON BACK ORDER INDEFINITELY. I HAVE SINCE SPOKE WITH SEVERAL PEOPLE WITH VEHICLES LIKE MINE WHO HAVE ALSO HAD THIS SAME RESULT WITH THEIR A/C CONDENSER. I WOULD LIKE THIS MATTER REVIEWED AS AN OFFICIAL RECALL.

AC IS NOT WORKING. ONLY HOT AIR BLOWS OUT. DEALER IS TELLING US THAT THE COMPRESSOR IS OUT AND IS COMMONLY OUT FOR GM PRODUCTS FROM THIS YEAR. THE PART IS BACK ORDERED WITH NO DATE AVAILABLE THAT IT WILL BE AVAILABLE. APPARENTLY IT IS BEING REDESIGNED. WE HAVE BEEN TOLD IT MAY BE MONTHS. SUMMER HEAT IS COMING AS EARLY AS THIS WEEK. WITH 4 CHILDREN, I FIND IT UNSAFE TO HAVE SUCH A HOT CAR. 17 PEOPLE AT OUR DEALER ALONE ARE WAITING FOR THE SAME PART. PLEASE GET GM TO FIX THE ISSUE.

THE A C COMPRESSOR LEAKS ALLOWOWING FREON INTO THE AIR AND THE CAB WERE THE DRIVER AND OCCUPANTS BREATHE IT.

THE VEHICLE HAS LEAKED WATER IN THE SEAMS OF THE BACK DRIVER SIDE SINCE THE INITIAL PURCHASE. IT HAS BEEN REPAIRED NINE TIMES BY TWO DIFFERENT DEALERSHIPS AND IT STILL LEAKS. THE VEHICLE NOW CONTAINS A HIGH MOISTURE READING AND WAS TESTED BY A MOLD SPECIALIST AND DETERMINED TO HAVE MOLD. THE VEHICLE IS CURRENTLY WITH THE DEALERSHIP.

WINDOW APPLIQUS ON BOTH SIDES OF VEHICLE BECAME LOOSE AND WERE FLAPPING WHILE DRIVING. THIS WAS CONCURRENT WITH A VERY NOISY CABIN, LIKENED TO THE SOUND OF A WINDOW BEING OPEN WHILE TRAVELING AT HIGHWAY SPEEDS. THESE APPLIQUES WERE PREVIOUSLY REPLACED BY DEALER AFTER INCIDENTALLY BEING FOUND LOOSE. THE NOISY ENVIRONMENT IN CABIN IS VERY LOUD AND DISTRACTING, CAUSING DRIVER AND PASSENGERS TO GET HEADACHES AND CAUSING DRIVER TO BECOME DISTRACTED. *TR

OUR 2015 YUKON XL DENALI HAS BEEN IN FOR REPAIR SERVICE FOR 41 DAYS SINCE PURCHASED NEW 3/23/15. THE CAR HAS STALLED WHILE IN MOTION WITH MY WIFE AND THREE DAUGHTERS IN THE VEHICLE TWICE AND BEEN UNRESPONSIVE TO THROTTLE INPUT 3 ADDITIONAL TIMES. THE STALL OCCURRED ONCE WHILE TURNING LEFT ACROSS TRAFFIC AND ANOTHER TIME WHILE TURNING RIGHT AND MERGING WITH TRAFFIC! THE PROBLEM IS INTERMITTENT AND GMC HAS NEVER BEEN ABLE TO REPLICATE IT. THEY HAVE GIVEN US THE SHOULDER SHRUG, "I DON'T KNOW WHAT TO TELL YOU, WE CAN'T REPLICATE IT" LINE, SO HERE ARE YOUR KEYS. NO WARNING INDICATORS, NO SIGNS IT MAY HAPPEN, AND NO WAY TO PULL UP THE ISSUE WITH THEIR DIAGNOSTICS...HUGE SAFETY CONCERN AND EACH TIME THEY HAVE HANDED US THE KEYS BACK AFTER 7 DAYS (THEIR STANDARD ALLOTTED TIME TO HAVE A LOANER OUT) WITHOUT ANY PROACTIVE ESCALATION TO FIND ROOT...

VEHICLE HAS A VIBRATION WHEN GOING BETWEEN 60-70 MILES PER HOUR ON HIGHWAY. THE VIBRATION STARTS AND STOPS OVER AND OVER AGAIN. VIBRATION LAST ABOUT TWO SECONDS EACH TIME. TOOK VEHICLE TO DEALER THEY SAID THE ISSUE WAS CAUSED BY RECALL THAT GMC WAS TRYING TO FIX. CURRENTLY NO PART IS AVAILABLE TO FIX VEHICLE. INSTRUCTED TO JUST KEEP DRIVING VEHICLE WITH THE VIBRATION UNTIL A PART IS ISSUED.

WHEN DRIVING AT HIGHWAY SPEEDS IN THE RAIN, WATER POOLS ON THE DRIVERS SIDE AND PASSENGER SIDE DOOR WINDOW AT THE BOTTOM FRONT OF THE WINDOW BLOCKING THE DRIVER'S VIEW OF EITHER SIDE VIEW MIRROR. I WENT TO THE DEALER IN CARSON CITY NV, AND SERVICE DIRECTOR STATED THEY HAD THIS PROBLEM WITH TRUCKS SINCE 2007 AND THERE HAS BEEN NO SOLUTION.

MY WIFE AND I WERE DRIVING ON THE PARKWAY AT ABOUT 65MPH WHEN WE HEARD WHAT SOUNDED LIKE A GUNSHOT IN THE VEHICLE. WE PULLED OVER TO THE SIDE OF THE ROAD ONLY TO FIND OUT THAT THE SUNROOF LITERALLY EXPLODED ON THE CAR. ALL OF THE GLASS THAT WAS LEFT WAS BOWED UPWARD WHICH WOULD INDICATE THAT THE SUNROOF EXPLODE OUTWARD AND NOTHING HIT THE ROOF OF THE CAR. WHEN WE BROUGHT THE CAR TO GMC THEY CLAIMED THAT SOMETHING MUST HAVE HIT THE SUNROOF TO MAKE IT EXPLODE WHICH I KNOW DID NOT HAPPEN. NEEDLESS TO SAY, GMC IS UNWILLING TO COVER THE DAMAGES TO THE CAR UNDER THE WARRANTY.