2018 GMC Sierra 1500

WHILE DRIVING WITH THE ROADS IN A WET CONDITION, FOR VARIOUS LENGTHS OF TIME, AND IN DIFFERENT MANEUVERS, THE SERVICE ENGINE LIGHT WILL START FLASHING AND THE VEHICLE WILL BEGIN TO LOSE POWER. AFTER A FEW MINUTES, THE SERVICE ENGINE LIGHT WILL GO SOLID AND THE TRACTION CONTROL LIGHT WILL ILLUMINATE. THE VEHICLE LOSES MORE POWER. ON BRAKING, JUST BEFORE THE VEHICLE COMES TO A COMPLETE STOP, THERE IS A CLUNK IN THE TRANSMISSION AND THE VEHICLE LURCHES. THIS HAS OCCURRED 6 TIMES IN THE LAST 14 MONTHS. UPON INVESTIGATION, TROUBLE CODE P0308 SHOWS IN THE OBD TOOL. THE ISSUE COULD NOT BE REPRODUCE BY THE DEALERSHIP SO THERE HAS NOT BEEN ANY RESOLUTION, JUST THOUGHTS.

I HAVE TAKEN MY TRUCK TO TEMECULA VALLEY BUICK GMC ON 3 SEPARATE OCCASIONS AFTER NOTICING MY TRANSMISSION SHIFTS HARD. I HAVE EXPERIENCE CLUNKING SHIFTS BOTH IN THE UP SHIFT AND DOWN SHIFT, TYPICALLY AT LOWER SPEEDS. THERE ARE TIMES WHEN THE TRANSMISSION SHIFTS GEARS IT PROPELS THE VEHICLE FORWARD IN A JERKING FASHION, VERY SIMILAR TO A REAR END FENDER BENDER. THE LAST TIME I TOOK MY VEHICLE TO THE DEALERSHIP, I WAS TOLD THAT THE VEHICLE IS SHIFTING AT NORMAL SPECS AND IF IT KEEPS ACTING UP, TO BRING IT BACK WHEN IT IS MORE CONSISTENT. THE VEHICLE'S WARRANTY RUNS OUT IN A FEW MONTHS.

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT A COOLANT SMELL WOULD EMIT FROM THE VEHICLE UPON EXIT. THE CONTACT ALSO STATED THAT HIS VEHICLE HAD BEGAN TO LOSE COOLANT AT AN ABNORMAL RATE AND HAD TO BE FREQUENTLY REPLACED. THE CONTACT TOOK THE VEHICLE TO MCCONNELL AUTOMOTIVE (3150 DAUPHIN ST, MOBILE, AL 36606) WHERE THEY CONFIRMED THAT THERE WAS A CRACK IN THE RADIATOR WHICH RESULTED IN A COOLANT LEAK. HE WAS ALSO INFORMED THAT THERE WAS NO RECALL ON THE VIN AND THAT THE WARRANTY DID NOT COVER THE REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND PROVIDED THE SAME INFORMATION AS THE DEALER. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 42,000.

AFTER COLD STARTS WHEN ACCELERATING THE TRANSMISSION SLIPS FROM 1ST TO 2ND AND THROWS YOUR BODY FORWARD. AFTER THAT FIRST GEAR CHANGE IT DOESN'T DO IT AGAIN UNTIL ANOTHER COLD START. AROUND 34000 MILES I AM GETTING A RUMBLING VIBRATION THROUGH THE DASH AND STEERING WHEEL WHEN HOLDING SPEED BETWEEN 35-75 MPH. THE RPM GUAGE WILL JUMP SLIGHTLY AND IT WILL FEEL LIKE GOING OVER RUMBLE STRIPS. ACCELERATION IS VERY WEAK AT TIMES. SOMETIMES ITS OK. THERE HAS TO BE SOMETHING DONE WITH THESE TORQUE CONVERTERS AND TRANSMISSIONS BY GM. UNACCEPTABLE FOR A 40-50K DOLLAR TRUCK!

I HAVE HAD MY GMC SIERRA 1500 FOR ALMOST 3 YEARS. I HAVE A LITTLE UNDER 59,000 MILES ON THE TRUCK. A FEW THOUSAND MILES AGO A TECH AT THE GM DEALER LET ME KNOW THAT THEY HAD TO ADD SOME COOLANT AND IT WAS SOMETHING I SHOULD KEEP AN EYE ON. I BROUGHT THE VEHICLE BACK TO HAVE THEM LOOK INTO IT. THEY LET ME KNOW THAT THE RADIATOR HAS A SMALL LEAK. IT IS NOT BIG ENOUGH TO HAVE FLUID HIT THE GROUND IN MY GARAGE BUT IT IS LOOSING FLUID. I LOOKED ONLINE AND SAW THAT THIS IS A COMMON ISSUE. I WAS TOLD THAT IT WAS NOT COVERED UNDER WARRANTY AND IT WOULD COST A GOOD AMOUNT TO FIX. I HAVE HAD THIS VEHICLE FOR UNDER 3 YEARS AND HAVE HAD 5 ISSUES WITHOUT ANY OF THEM BEING COVERED BY WARRANTY. THIS VEHICLE SEEMS TO BE A LEMON.

TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE TEMPERATURE GAUGE INDICATED THAT THE VEHICLE WAS OVERHEATED. NO WARNING LIGHT WAS ILLUMINATED. THE VEHICLE WAS TAKEN TO BECK & MASTEN BUICK GMC NORTH (11300 FM 1960 WEST, HOUSTON, TX 77065, (877) 380-8433) WHERE IT WAS DIAGNOSED AND DETERMINED THAT THE RADIATOR WAS LEAKING COOLANT AND THAT THE RADIATOR NEEDED TO BE REPLACED. COOLANT WAS REFILLED IN THE VEHICLE. THE DEALER CONTACTED THE MANUFACTURER FOR ASSISTANCE WITH REPAIRS. THE FAILURE MILEAGE WAS APPROXIMATELY 47,000.