2016 GMC Sierra 1500

These are unverified consumer reports filed with NHTSA, shown as submitted.

• 12/22/2025· STRUCTURE

  The other night, I was backing into a parking spot at the market. As I slowed I noticed the brake pedal was getting harder to depress and it felt as though I was going to back into the car behind me. It took more effort to stop the truck.

• 12/16/2019· STEERING

  PURCHASED THE 2016 DURAMAX DENALI WITH LESS THAN 39,000 MILES AFTER MY PREVIOUS GMC TRUCK TURNED OUT TO BE A SAFETY HAZARD AND A MONEY PIT. SALES REP HAD ME DRIVE THE VEHICLE AROUND THE BLOCK AND THE VEHICLE WAS WHAT I WANTED. AFTER DRIVING THE TRUCK AT HIGHWAY SPEED I STARTED NOTICING THE VEHICLE DRIFTING ALL OVER, I HAD TO TURN THE LANE DEPARTURE WARNING SYSTEM OFF BECAUSE YOU CANT KEEP IT IN THE LANE. GOING INTO A CONSTRUCTION ZONE I ALMOST WAS PUSHED INTO THE BARRIER BECAUSE OF THE DRAFT OFF OF A SEMI. WITH SPEED LIMITS UP TO 85 HERE IN TEXAS I CANT BELIEVE SOMEBODY HAS NOT BEEN KILLED YET. I AM TAKING IT TO GMC CAVENDER OF BUICK IN SAN ANTONIO WEDNESDAY. THIS IS A VERY SERIOUS ISSUE.

• 12/14/2019· POWER TRAIN

  THE TRUCK HAS A HORRIBLE VIBRATION FROM AROUND 45 MPH AND UP. HAVE TEST DROVE OTHER 2016 GMC SIERRAS WITH SAME ISSUE. HAVE TAKEN IT BACK TO THE DODGE DEALERSHIP WE BOUGHT IT FROM AND THEY SAID IT SHOULD BE A RECALL

• 12/11/2018· SERVICE BRAKES

  ON SEVERAL OCCASIONS I HAVE HAD DIFFICULTY WITH THE BRAKING SYSTEM. THE BRAKING SYSTEM BECOMES UNRESPONSIVE AFTER PUMPING THE BRAKES A FEW TIMES. ON SEVERAL OCCASIONS I'VE HAD THE BRAKE PEDDLE PUSHED TO THE FLOOR IN AN ATTEMPT TO STOP THE VEHICLE. THIS SEEMS TO HAPPEN MOSTLY AT SLOW SPEEDS, A GOOD EXAMPLE IS WHEN YOU ARE IN A TRAFFIC JAM AND ARE PRIMARILY USING THE BRAKES TO EDGE FORWARD AND STOP.

• 12/01/2025· ELECTRICAL SYSTEM,VISIBILITY

  The contact owns a 2016 GMC Sierra 1500. The contact stated that while idling in the drive-through at a pharmacy, the contact noticed smoke coming from the rear window, and the rear window shattered. The contact stated that the defroster was activated at the time of the failure. There was no injury sustained. The contact deactivated the defroster and drove to the residence, where the contact disconnected the defroster fuse. The contact related the failure to Customer Satisfaction Program Number: N192265660 (Rear Window Defroster Thermal Events). The vehicle was not diagnosed or repaired by an independent mechanic. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 139,250.

• 11/24/2025· ELECTRICAL SYSTEM,VISIBILITYFire

  The contact owns a 2016 GMC Sierra 1500. The contact stated that her husband remote started the vehicle. The contact stated that when the vehicle was started, the defrosters automatically activated. The vehicle warmed up for approximately 2 to 3 minutes. The contact stated that while leaving the driveway, her husband stopped the vehicle to assist with moving a lawn mower. Upon returning to the vehicle and looking through the glass her husband observed that there was smoke coming from the rear glass. The contact stated that her husband unlocked the rear doors and released the folding rear seat and saw that the defroster unit was on fire and smoking. The contact stated that her husband turned the vehicle off and the flames were self-extinguished; however, approximately 45-seconds later the driver’s side rear panel window shattered. The vehicle was not taken to a local dealer or independent mechanic to be diagnosed or repaired. The contact researched online and related the failure to Customer Satisfaction Program Number: N192265660 - Rear Window Defroster Thermal Events (Electrical System, Visibility). The manufacturer was informed of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 89,000.

• 10/13/2025· UNKNOWN OR OTHER

  Noticed the bed of my truck was touching the cab when looking under truck the frame is total structural failure rusted all the way threw on the driver side and beyond

• 10/11/2020· POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),SERVICE BRAKES

  APPARENTLY, THE 8 SPEED AUTOMATIC TRANSMISSION HAS ISSUES WITH WIRING HARNESS AND HARD SHIFTING WHICH THE MANUFACTURER HAS 18 SERVICE BULLETINS OUT ON YET STILL WILL NOT RECALL AND FIX PROBLEMS. ALSO THE BRAKE SYSTEM IS FAULTY AND UNSAFE IT LOSES PRESSURE AND EVEN BRAKING AT VARIOUS SPEEDS. AFTER TAKING IT TO THE DEALERSHIP THEY CAN NOT FIGURE OUT WHY AND SAY IT IS VARIOUS PARTS AND SHOULD BE RECALLED BUT IT IS NOT AS OF YET. GM KNOWS OF THESE ISSUES AND THE 1000S OF DOLLARS CUSTOMERS HAVE TO PAY FOR THESE REPAIRS. THIS IS WRONG AND NEEDS TO BE RECTIFIED.

• 09/15/2017· POWER TRAIN

  THIS ISSUE STARTED A FEW MONTHS AFTER I PURCHASED THE TRUCK TOOK IT TO TWO DEALERS THEY SAY ITS NORMAL. CALLED GMC & THEY HAVE NO RECALL. WHEN DRIVING THE TRUCK & HAVE TO SLOW DOWN IN TRAFFIC THE AUTOMATIC TRANSMISSION DOWN SHIFTS & HAS A VERY NOTICABLE JERK. WILL ACTUALLY JERK THE HOLE TRUCK. PEOPLE WHO HAVE RODE WITH ME TELL ME I HAVE A TRANSMISSION PROBLEM. WHAT CAN I DO

• 09/02/2020· STEERING,POWER TRAIN,ENGINE

  SINCE I'VE OWNED THIS VEHICLE I HAVE HAD TRANSMISSION PROBLEMS. ONCE IT WENT FROM 70 TO 20 ON THE HIGHWAY.. IT KICKS OR JERKS AT ANY SPEED... ESPECIALLY GOING SLOW.. THE SHIFTING IS HORRIBLE!!! THE FEELING OF IT LOSING POWER AGAIN LIKE IT DID COULD CAUSE SERIOUS DAMAGE TO THE TRANSMISSION AND UNSELFISH AND PASSENGERS.. I DON'T TRUST IT ON THE HIGHWAY!!! I KEEP A MONITOR CONNECTED TO MY TRUCK AT ALL TIMES.. THE DATES COINCIDE WITH THE PAPERWORK!! ONGOING TRANNY ISSUES ALL THE TIME!! I PAID WAY TO MUCH FOR THIS LEMON!! ENGINE VIBRATES AROUND 80.. AND IF YOU DON'T USE YOUR BLINKER.. THEY TRUCK FIGHTS YOU TO CHANGE LANES.. IT PULLS YOU BACK!!

• 08/29/2025· TIRES

  I purchased a set of Firestone Destination A/T2 tires from Firestone in Southaven, MS. I had the tires for less than 16 months. I took the tires in for inspection & was told the treat belts had separated from the tires. The tires are a hazard. the tires are 275/55R20. Driving on the interstate, I had to pull over as it felt as though the truck would overturn/rollover. They must be recalled. I contacted Firestone, they were of little to no assistance. Unable to obtain a refund or credit. I googled info on firestone tires & a plethora of information exhibited the same thing, problems with tread separation.

• 08/27/2020· STEERING,SEAT BELTS

  1) REAR DRIVER SIDE SEATBELT WOULD NOT RETRACT WHEN UNBUCKLED. SEATBELT HAD TO BE MANUALLY FED BACK IN SO THAT THE BELT DIDN'T DANGLE OR GET SHUT IN THE DOOR. REPAIRED AT DEALERSHIP ON JUNE 18, 2020 AT ROUGHLY 55-56,000 MILES. 2) TRUCK IS CURRENTLY SHAKING WHEN DRIVING AND HAS TENDENCIES TO SHAKE VIOLENTLY AT TIMES. I'M CURRENTLY JUST SHY OF 59,000 MILES ON THE TRUCK AND HAS BEEN NOTICEABLE WITHIN THE LAST 1,000 MILES. RESEARCHING IT APPEARS IT HAS A COMMON NAME OF "CHEVY SHAKE."

• 08/08/2018· POWER TRAIN,WHEELS

  8 SPEED TRANSMISSION BUCKS, HESITATES, LURCHES FORWARD, CLUNKS, WHILE STARTUNG ACCELERATION OR COMING TO A STOP. I TRY TO KEEP A BIG GAP BETWEEN MY TRUCK AND CARS IN FRONT OF ME AT STOP SIGNS BECAUSE IT RANDOMLY LURCHES FORWARD AND I ALMOST HAVE BUMPED CARS IN FRONT OF ME. I HAVE HAD THE TRUCK INTO THE DEALER SO MANU TIMES TO FIX THE VIBRATION ISSUES AS WELL, THEY SAID 3 TIRES THAT CAME IN THE BRAND NEW TRUCK WERE DEFECTIVE SO I HAD TO REPLACE THEM ALL AND THE SHAKE IS STILL THERE, THE BALANCED, REBALANCED, ROAD FORCE BALANCE AND NOTHING WORKS. LAST TIME AT THE DEALER SAID IT IS PROBABLY THE TIRES, HE SAID DONT ROTATE THEM AGAIN AND WHEN THEY WEAR OUT HE WILL PUT ME IN A 'BETTER' TIRE. I AM PAST MY WARRANTY SO THE DEALER SAYS ANY COSTS ARE MY RESPONSIBILITT, IF THE NHTSA COULD PLEASE STEP IN TO ASSIST US TO MAKE GM FIC THEAE VEHICLES WHICH ARE A SAFETY HAZARD.

• 07/30/2018· POWER TRAIN

  TRUCK SHIFTS REALLY HARD AND IS UNPREDICTABLE. I ALMOST DROVE THROUGH MY GARAGE DOOR THE OTHER DAY SHIFTING TO DRIVE FROM REVERSE. TRUCK WILL LUNGE FORWARD OR DELAY IN SHIFTING. THERE HAVE BEEN A FEW TIMES I'VE HAD TO SLAM ON THE BRAKES BEFORE I BACKED INTO SOMETHING. I HAVE BROUGHT IT IN 3-4 TIMES FOR THE ISSUE AND GMC WON'T REMEDY THE PROBLEM.

• 07/29/2019· SERVICE BRAKESCrash

  TL* THE CONTACT OWNS A 2016 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE THE VEHICLE WAS BEING REVERSED AT UNDER 5 MPH, THE BRAKE PEDAL WAS DEPRESSED BUT FAILED TO OPERATE AS INTENDED. THE CONTACT CRASHED INTO A TREE WHICH CAUSED DAMAGE TO THE PASSENGER'S SIDE DOOR, FENDER AND SIDE MIRROR. THERE WAS NO INJURIES. THE VEHICLE WAS TAKEN TO VAN BUREN BUICK GMC LOCATED AT 2257 JERICHO TURNPIKE, GARDEN CITY PARK, NY 11040, (516) 535-9508, TO BE DIAGNOSED WHICH WAS STILL PENDING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 78,000.

• 07/22/2026· SERVICE BRAKES

  My vehicle a 2016 GMC Sierra 1500 upon lower idle speeds loses vacuum pressure. As the vacuum level drops the brake assist decreases, increasing the braking effort, extending the distance required to stop the vehicle, which increases the risk of a crash. I have had a warning light come on advising to service the brake assist system. I took my truck to a local mechanic who confirmed the codes and learned that there had been a GM recall associated with this failure at one time, with GM recall # N192268490. There is also NHTSA recall bulletin 19V645000 regarding this matter as well. Upon contacting some local GM dealers in the area, I was informed that my VIN was not listed as one of the vehicles affected by this recall, so a recall notice was never sent regarding my vehicle. I was also told that I just fell outside their 10-year window regarding this matter and that they would not repair this safety issue under warranty. I called the GM customer service who could not explain why the VIN associated to my truck was not listed and they said I should contact NHTSA and start a claim for potential reimbursement in the future after repairs are made. I feel that this is an unnecessary step as I believe GM should honor their product and repair an obvious safety issue with the truck, especially since they knew this was an issue in thousands of their trucks where it was not my fault my vehicles VIN was not included as a potential recall issue, but I am following their suggestion

• 07/08/2026· ENGINE

  Catastrophic engine failure while traveling 40 mph. Dealership diagnosed as cylinder walls being scorched and rods blown through. No warning signs existed - just had a loud thud before the check engine light started flashing and grinding sound started coming from engine.

• 07/06/2020· WHEELSCrash

  HIT POST AT PARKING SPEED AN WHEEL SPLIT INTO TWO SECTIONS

• 06/30/2026· UNKNOWN OR OTHER

  I noticed a "ticking" noise a few years ago, it wasn't that bad and while taking my truck to the dealer for an oil change I ask about it and the representative told me that in this models that was normal. Since it wasn't that bad and the truck didn't show any problems at that time, I just decide to let it be. This weekend I took my family out of state for a fun trip, and while going in the highway around 55-65 miles per hour, the truck suddenly lose power, it felt like it the truck "sits" the cars behind me had to dodge me and I lost control of the truck and had to steer to the right getting out of the highway and almost go into a ditch, thankfully nothing scaleted to a big and disastrous accident. The engine light started to flash. And suddenly stopped, I turn off the truck checked back for my family and after a few minutes, I started the truck again, the truck started right away and but I noticed the "ticking" got a little louder, talking to my neighbor about this he told me he had the same issue and hes motor went bad and they said it was a bad AFM system causing this, I started searching on line for it and see there been the same issues with the AFM with other drivers, and seen that the have the same issues Im confident that it is an AFM problem. Truck is been running and is my daily work car and I notice is loosing power, I contacted the dealer but haven't had any answer yet. I cant take it to a mechanic shop because they would charge me in between 2,500 to 5k to fixed, money that I dont have, while in the call with one shop he told me about this place to put a claim and notify about how dangerous this can be if in a highway.

• 05/28/2026· STRUCTURE

  The contact owns a 2016 GMC Sierra. The contact stated that she had noticed the frame had rusted in two places. No warning lights were illuminated. The local dealer was contacted, who confirmed there were no open recalls. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was unknown.

• 05/15/2019· POWER TRAIN,SERVICE BRAKES

  BRAKE FAILURE ISSUE AT LOW SPEED. THIS HAPPENED IN TWO SEPARATE OCCURRENCES IN PARKING LOTS. THE BRAKE PEDAL BECAME VERY STILL AND REQUIRED GRABBING THE STEERING WHEEL AND USING IT TO PULL MYSELF DOWN HARDER ON THE BRAKE PEDAL TO GET THE VEHICLE TO STOP. THIS RESULTED IN GREATLY INCREASED STOPPING DISTANCE. FORTUNATELY NO VEHICLES OR PEOPLE WERE IN MY PATH DURING THESE OCCURRENCES. GM HAS SINCE REPAIRED MY VEHICLE. I HAVE SINCE RECEIVED A NOTICE THAT THEY ARE REPAIRING THIS ISSUE ONLY AFTER THE OWNER HAS A BRAKE FAILURE PROBLEM. THIS IS EXTREMELY UNSAFE AND IS UNACCEPTABLE. OWNERS NEED A SOLUTION AND DO NOT NEED TO WORRY THAT THIS ISSUE WILL ARISE AGAIN. IF I HIT A PERSON OR A VEHICLE, WILL GM PAY FOR MEDICAL BILLS, VEHICLE REPAIRS, LEGAL FEES? THIS TRUCK AS WELL AS MY LAST 2009 CHEVROLET SILVERADO HAD ISSUES WITH THE DRIVE TRAIN THAT GM CLASSIFIED AS NORMAL. THESE TRUCKS SHOULD NOT HAVE DRIVE SHAFT CLUNK WHEN STOPPING AT A TRAFFIC LIGHT. THESE VEHICLES HAVE MAJOR MECHANICAL CONCERNS AND THEIR QUALITY IS TRASH!

• 05/14/2018· POWER TRAIN,UNKNOWN OR OTHER,SERVICE BRAKES

  LOOSES BRAKE ASSISTANCE IN PARKING LOT AND SOMETIMES ON THE HIGHWAY,CHECK ENGINE LIGHT COMES ON WITH VARIOUS CODES THE MOST COMMON IS MISFIRE ON STARTUP IT HAPPEN IN DIFFERENT OCCASIONS.

• 05/06/2019· SERVICE BRAKES

  THE BRAKES DID NOT WORK AT SLOW SPEED GOING FORWARD OR IN REVERSE

• 04/29/2019· SUSPENSION

  THE SEALS ON THE FRONT END SUSPENSION SHOCKS - SEALS ARE BROKEN ON BOTH FRONT SETS GREASE IS LEAKING OUT OF THEM AND CAUSING A ROUGH RIDE WITH NOISE WHEN YOU GO OVER BUMP

• 04/20/2020· ELECTRICAL SYSTEM

  I HAVE DIESEL 3500 1FUEL TANK THE FUEL GAUGE DOESN'T ALWAYS COME ON AND IF DOES IT MAY TAKE SEVERAL MILES BEFORE IT BEGINS TO WORK. OR SOMETIMES IT MAY JUST QUIT. THEN OTHER TIME IT MAY WORK JUST FINE. THERE SEEMS TO BE A PROBLEM. THE PROBLEM DID NOT START TILL I TURNED ABOUT 40,000 I HAVE ABOUT 42,000 NOW. IF IT WORKS TODAY THEN IF IT SET FOR AN FEW DAY IT MAY NOT WHEN IT START TILL YOU DRIVE SEVERAL MILES. THEN IT MAY WORK FOR SEVERAL DAY THEN IT MAY STOP YOU NEVER KNOW WHEN IT GOING TO STOP. DO YOU HAVE A ANSWER FOR THIS PROBLEM. I KNOW THERE A PROBLEM WITH DUAL TANKS BUT HAVE SINGLE TANK.

• 04/09/2019· STEERING

  STEERING WHEEL SLOPPY 1-2 INCHES OF PLAY WHILE DRIVING

• 04/07/2026· POWER TRAIN,SERVICE BRAKES

  1- transmission issue, it’ll occasionally slip from 1-2 gear and engine rpm’s will shoot up making it when you release the gas pedal it’ll kick into second gear it’ll also do minor kicks into other gears (8l90 transmission) 2- breaks issue, unsure of what the problem is but at very low speeds like parking or going in slow traffic the break pedal will get really hard making you have to press extra hard for it to break, releasing and pressing again doesn’t help either

• 04/01/2019· ELECTRICAL SYSTEM

  A FEW MINUTES AFTER STARTING TRUCK WITH REMOTE STARTER (DEFROSTER ON), A PORTION OF THE REAR WINDOW SHATTERED. SEEMS LIKE SEVERAL PEOPLE HAD THE SAME PROBLEM, APPARENTLY CAUSED BY THE DEFROSTER OVERHEATING THE GLASS.

• 03/31/2017· ENGINE

  TL* THE CONTACT OWNS A 2016 GMC SIERRA DENALI. THE CONTACT STATED THAT WHILE DRIVING AT 5 MPH, THE VEHICLE STALLED AND ROLLED BACKWARDS. THE CONTACT WAS ABLE TO RESTART THE VEHICLE BUT THE FAILURE RECURRED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 8,300. THE VIN WAS NOT AVAILABLE.

• 03/23/2019· SERVICE BRAKES

  AT 44,972 MILES I BEGAN TO EXPERIENCE LOSS OF BRAKING AT SLOW SPEEDS (10-15 MPH) ON MULTIPLE OCCASIONS. THE BRAKE PEDAL LOST ITS SPONGY FEEL AND FELT HARD AND DEAD. NO MATTER HOW MUCH PRESSURE I APPLIED TO THE BRAKE PEDAL, MY TRUCK CONTINUED TO ROLL FORWARD. IT WAS A SCARY FEELING TO LOSE CONTROL OF THE VEHICLE ESPECIALLY BECAUSE I HAD MY 10 YEAR OLD DAUGHTER IN MY TRUCK THE FIRST TIME IT HAPPENED. I HAD TO DEPRESS MY EMERGENCY BRAKE TO BRING THE VEHICLE TO A STOP. I PULLED THE TRUCK OVER AND TURNED OFF AND ON THE IGNITION AND THE BRAKE PEDAL REGAINED ITS SPONGY, NORMAL PRESSURE AND FEEL. THE BRAKES FELT NORMAL FOR ABOUT A WEEK OR SO AND I FELT MAYBE IT WAS AN ISOLATED INCIDENT UNTIL THE SAME PROBLEM OCCURRED WHEN I WAS DRIVING HOME FROM WORK IN CITY STOP AND GO TRAFFIC. I WAS DRIVING ABOUT 5-10 MPH TRYING TO COME TO A STOP BEHIND THE CAR IN FRONT OF ME WHEN THE TRUCK CONTINUED TO ROLL FORWARD. I BARELY HAD ENOUGH TIME TO DEPRESS THE EMERGENCY BRAKE TO STOP AND CAME VERY CLOSE TO HITTING THE CAR IN FRONT OF ME. IT WOULD HAVE BEEN AT VERY LOW SPEED, BUT NONETHELESS A COLLISION. I TOOK THE TRUCK TO THE DEALER TO HAVE THE PROBLEM CHECKED OUT AND ENDED UP HAVING TO REPLACE THE VACUUM PUMP ASSEMBLY FOR $656.50, PARTS AND LABOR. I DEFINITELY FEEL THIS IS A VALID SAFETY ISSUE THAT DESERVES INVESTIGATING AND DOING EITHER A SAFETY NOTICE TO VEHICLE OWNERS THAT COULD BE EFFECTED OR A RECALL. HAD I KNOWN ABOUT THE POTENTIAL ISSUE I WOULD HAVE BEEN BETTER ABLE TO DEAL WITH IT. IT REALLY SHOOK ME UP THE FIRST TIME IT HAPPENED. I DIDN'T FEEL SAFE DRIVING THE TRUCK EVEN 10 FEET AFTERWARDS.

• 03/19/2026· POWER TRAIN

  since we have had this truck the transmission has not worked right to where no longer works plus we have paperwork from other dealship have said this truck should have never been sold to us by the other deal they told us this truck has a lot of issues and is not road safe we where told by that dealer they cant help us so we need help with this the truck don't even have 100,000 on it the truck also pulls to the light sometimes and sometimes to the right .....

• 03/11/2021· STRUCTURE,UNKNOWN OR OTHER

  WHILE DRIVING 70MPH ON HIGHWAY SUNROOF EXPLODED. SCREEN WAS IN PLACE SO GLASS SHARDS DID NOT ENTER THE CABIN. THERE WAS NOT AN OVERPASS NOR LARGE TRUCKS IN THE AREA TO BE CAUSED BY DEBRIS OR THROWN ROCKS.

• 03/09/2021· STEERING

  EXCESSIVE SLOP AND UNCONTROLLABLE, UNINTENDED STEERING SHIFTS CAUSING VEHICLE TO UNEXPECTEDLY AND SUDDENLY VEER OUT OF LANE OF TRAVEL RELATED TO DEFECTIVE LASH ADJUSTMENT STEERING BOX

• 02/27/2018· ENGINE

  MY 2016 GMC SIERRA 3500 DIESEL DENALI HAS BEEN IN THE SHOP 5 TIMES AND OVER 50 DAYS SINCE NOVEMBER 4, 2017 FOR AN EMISSIONS ISSUE. ON NOVEMBER 4 WHILE DRIVING, I RECEIVED A CHECK ENGINE LIGHT THAT SAID TO SERVICE THE EXHAUST SYSTEM AND A COUNTDOWN STARTED, REDUCING THE SPEED OF THE VEHICLE BY 10 MPH AFTER EVERY 50-75 MILES . THE VEHICLE HAD ABOUT 38,700 MILES AT THE TIME. THE ERROR MESSAGE THAT THE DEALERSHIP RECEIVED WAS P205B REDUCTANT TANK TEMPERATURE SENSOR PERFORMANCE. THEY REPLACED THE EMISSION REDUCTION TANK RESERVOIR AND COMPLETED A REGENERATION TEST. ON DECEMBER 11 I GOT THE SAME MESSAGE AND THEY RECEIVED A REDUCTANT HEATER CONTROL CIRCUIT LOW ERROR AND THEY REPLACED GLOW PLUG CONTROL MODULE. ON JANUARY 2 I GOT THE SAME MESSAGE AND THE DEALERSHIP REPLACED THE EMISSION REDUCTION FLUID SUPPLY PUMP MODULE. ON JANUARY 17 I GOT THE SAME ERROR AND THEY REPLACED REPLACED THE REDUCTION FLUID SUPPLY PUMP MODULE AGAIN. I GOT THE SAME SERVICE EXHAUST SYSTEM ERROR AND TOOK THE TRUCK BACK TO THE DEALERSHIP ON FEBRUARY 10. IT IS NOW FEBRUARY 27 AND THEY HAVE NOT IDENTIFIED THE PROBLEM. THERE APPEARS TO BE AN ISSUE WITH EITHER THE EMISSIONS SYSTEM OR THE COMPUTER THAT RUNS THE SYSTEM, BUT NO ONE CAN SAY FOR SURE.

• 02/24/2019· SERVICE BRAKES

  AT 38,200 MILES, THE TRUCK EXPERIENCED A LOSS OF BREAK PRESSURE WHILE IN A PARKING GARAGE TRAVELING AT LOW SPEED CAUSING THE VEHICLE TO NARROWLY MISS HITTING A CONCRETE UPRIGHT. AFTER REALIZING THERE WAS A BREAK ISSUE, VEHICLE WAS ABLE TO BE CAREFULLY MOVED FROM THE PARKING GARAGE BY COASTING ON THE BREAK. AFTER RESTARTING THE VEHICLE, THE FIRST DEPRESS OF THE BREAK SEEMED TO GIVE FULL PRESSURE, BUT EACH SUBSEQUENT DEPRESS GAVE LESS AND LESS PRESSURE. VEHICLE HAD TO BE TOWED TO NEAREST DEALERSHIP AND IS CURRENTLY AWAITING DIAGNOSTIC. PROBLEM APPEARS TO BE PART OF ONGOING INVESTIGATION INTO BRAKE VACUUM PUMP FAILURE (NHTSA ACTION NUMBER: PE18012).

• 02/05/2020· VISIBILITY/WIPER

  TL* THE CONTACT OWNS A 2016 GMC SIERRA DENALI. THE CONTACT STATED AFTER PLACING THE VEHICLE INTO REVERSE, WITHIN APPROXIMATE 2 FEET THE VEHICLE MADE AN ABNORMAL LOUD NOISE. THE CONTACT LOOKED INTO THE BACKUP CAMERA AND NOTICED SMOKE. THE CONTACT EXITED THE VEHICLE HE NOTICE SHATTERED GLASS. THE REAR PASSENGER WINDOW WAS FRACTURED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR A LOCAL MECHANIC FOR A DIAGNOSIS OR REPAIRS. THE MANUFACTURER WAS NOT MADE AWARE OF THIS ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 94,000.

• 02/03/2026· AIR BAGSCrash

  The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving approximately 35 MPH, the vehicle crashed into a deer, causing significant damage to the front end. During the crash, no airbags deployed. The cause of the air bag's failure to deploy was not determined. The vehicle was repaired at the local collision center. Recently, while driving approximately 50 MPH, the driver pressed the brakes to decelerate before crashing into a deer. During the crash, the vehicle sustained minor damage to the front end, but all the air bags in the vehicle deployed, including the driver steering wheel air bag, the front passenger side air bag, the driver and passenger side curtain airbags and seat belt pretensioners, and the passenger side seat air bag. The driver's side seat airbag did not deploy. The contact suffered adverse effects of COPD due to the air bag powder during the deployment. No medical treatment was needed. The cause of the failure was not determined. The manufacturer and local dealer were not contacted. The contact indicated that due to the minor damage to the vehicle during the crash, the air bag should not have deployed. The vehicle was towed to a collision center and was determined to be destroyed. The failure mileage was unknown.

• 01/29/2025· EXTERIOR LIGHTING,VISIBILITY

  The contact owns a 2016 GMC Sierra Denali. The contact stated while driving 10 MPH, the rear windshield exploded without impact. The contact stated that the rear fogger had been activated independently. There were no injuries sustained. There was water located in the third taillight. The contact noticed there was mold and mildew in the taillight. The contact was seeking assistance from the insurance company. The contact called the local dealer and was informed that there were no recalls on the VIN related to the failure. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 120,000.

• 01/20/2026· ENGINE

  Engine has developed a serious lifter / cam issue. dealer identified it as a result of Displacement on Demand design. Total engine replacement recommended by dealer but since the mileage on that vehicle is over 100,000 warranty, the repair is not covered. Known issue, should have been pointed out by dealer / manufacturer before warranty expiration. FYI _ I do all repair work at dealer. Vehicle looses power intermittently is is not drivable at any distance. Manufacturing / design issue known over different versions of this engine since 2010, I believe.

• 01/17/2018· SEATS

  THE REAR SEAT HEADRESTS ARE UNDERSIZED AND TOO SMALL TO PROPERLY PROTECT AND ACCOMMODATE TEENAGE AND ADULT PASSENGERS. ALSO, WHEN THEY ARE SET AT THEIR HIGHEST SETTING, THEY BECOME UNLOCKED WITH VERY LITTLE BACK OR SHOULDER PRESSURE AND FALL TO THE LOWEST SETTING. IN MY OPINION, THIS IS A SERIOUS SAFETY HAZARD.

• 01/16/2020· POWER TRAIN

  TRUCK LURCHED UNCONTROLLED FOR SEVERAL FEET WHEN PLACED IN REVERSE GEAR.

• 01/12/2026· SERVICE BRAKES

  While traveling at low speeds in parking lots and in the operation of parking, my 2016 GMC Sierra 1500 gets a hard brake pedal that goes to the floor but I have no brakes. I almost hit a person in a local grocery store parking lot, at the bank driving up to the ATM, and I almost lost my truck over a bank because the brakes failed. This has happened multiple times at low speeds but it is getting more consistent recently. It has endangered myself and others. It is only a matter of time until damage occurs or someone gets hurt.

• 01/07/2020· EXTERIOR LIGHTING

  PASSENGER SIDE TAIL LIGHT LED LIGHTS FAILED. LIGHT BEGAN TO DIM AND FLUTTER IN MULTIPLE LOCATIONS IN LED STRIP, EVENTUALLY TOTALLY FAILING IN BRAKE LIGHT AND TURN SIGNAL.

• 01/06/2025· TIRES

  255/55R20 these tires only have 30k on them and are starting to dry rot on the sidewall close to the rim on all 4 tires and the tire pressure is checked every couple months I've reached out to Kenda with no response as to date

• 01/03/2019· STEERING

  THE VEHICLE HAS EXCESSIVE STEERING PLAY. IT IS DANGEROUS TO DRIVE IN ICY CONDITIONS AND CAN BE NOTICED DRIVING THE VEHICLE STRAIGHT UNDER ALL DRIVING CONDITIONS ON DRY OR ICY PAVEMENT. I TOOK IT TO THE DEALER AND THEY PERFORMED SERVICE BULLETIN WORK AT MY EXPENSE TO FIX THE PROBLEM. THE SERVICE BULLETIN AND REWORK INVOLVED TIGHTENING THE STEERING BOX BACKLASH SCREW. THE PROBLEM WAS NOT FIXED AND STILL EXISTS. THIS IS A KNOWN PROBLEM, BUT MY VEHICLE WAS NOT INCLUDED ON THE RECALL LIST TO FIX THE ISSUE. IN ORDER TO FIX THE ISSUE, THE PITMAN ARM SHAFT NEEDS TO BE REPLACED WITH AN UPDATED VERSION GM PN 84240812 IF THE STEERING PLAY CANNOT BE ADJUSTED OUT. THIS IS THE CASE WITH MY VEHICLE AND THE PART WAS NOT REPLACED.