2018 GMC SIERRA 1500

What owners reported to NHTSA, ranked by how often and how seriously.

This is complaint data, not a random sample.

It only includes owners who chose to file a federal complaint, so it over-represents dramatic and safety-related problems and under-represents minor issues an owner just had fixed without reporting. Read this as what NHTSA complainants report most, not as this vehicle's true failure rate. Full methodology.

Component ranking

  1. #1

    transmission automatic

    2 stranded, 69 unsafe

    71
    incidents
    Typical range: 9,000–50,000 mi

    Median 27,000 mi, based on 47 reports (53% had no usable mileage)

    • "WHEN TRUCK IS IN MOTION SHIFTING FROM REVERSE TO FIRST/SECOND GEAR IT JUMPS FORWARD INTO GEAR. THERE IS A HESITATION SHIFTING INTO GEAR. IT IS A VERY WELL KNOWN PROBLEM WITH THE 8 SPEED TRANSMISSION. I HAVE BEEN IN CONTACT WITH THE DEALER BUT 3 DIFFERENT TIMES…"~500 mi, complaint #1668516
    • "I EXPERIENCED FAILURE OF THE TRANSMISSION TO SIFT UP OR DOWN ON SEVERAL OCCASIONS BETWEEN 11/01/2019 AND 11/11/2019. ON 11/08/2019 I WAS MONITORING THE TRANSMISSION TEMPERATURE, AND WHEN THE TRANSMISSION TEMP REACHED 164 DEG, THE TRANSMISSION WOULD STOP SHIFTI…"~6,003 mi, complaint #1622078
    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE TRANSMISSION SHIFTED FROM FIRST TO SECOND GEAR WHILE DRIVING 15 TO 20 MPH. ALSO, WHEN DRIVING ON THE HIGHWAY FOR A LONG PERIOD OF TIME, THE TRANSMISSION WOULD NOT DOWNSHIFT UNTIL THE VEHI…"~16,000 mi, complaint #1593740
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that upon depressing the accelerator, the vehicle shuddered while upshifting. There was no warning light illuminated. The contact had taken the vehicle to a local dealer where they were unable to serv…"~45,000 mi, complaint #1757848
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while driving 70 MPH, the vehicle started shaking violently, prompting the contact to pull over to the shoulder of the roadway. The vehicle returned to normal functionality, but upon the contact conti…"~131,000 mi, complaint #2036685
  2. #2

    engine internal

    4 stranded, 24 unsafe, 1 annoyance

    29
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=6)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that at start-up there was an abnormal ticking sound coming from the engine. There were no warning lights illuminated. The local dealer was contacted; however, the vehicle was not diagnosed. The conta…"~17,000 mi, complaint #2077450
    • "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 TH…"~33,000 mi, complaint #1735193
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at various speeds, there was an abnormal banging sound coming from the vehicle. There was no warning light illuminated. The contact inspected fluids but found no defects with the ve…"~90,000 mi, complaint #2119336
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving on a neighborhood road at 40 MPH, the check engine warning light was flashing with an abnormal knocking sound coming from the engine, and the vehicle was vibrating abnormally. The c…"~110,000 mi, complaint #2122126
    • "The contact owns a 2018 GMC Sierra 1500. While starting the vehicle, it was shaking violently, with reduced power. The vehicle was restarted and worked as designed. Upon research, the contact associated the failure with NHTSA Action Number: PE25001 (Engine and…"~150,000 mi, complaint #2171221
  3. #3

    brake hydraulics

    12 unsafe

    12
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=8)

    • "DRIVING SLOWLY IN BUMPER TO BUMPER TRAFFIC. I WAS STOPPED WITH MY FOOT ON THE BRAKES, AND THE TRUCK STARTED MOVING FORWARD. I THOUGHT ENGINE SURGE, BUT IT WAS NOT. I PUMPED BRAKES HARD AND THE TRUCK STOPPED. THIS HAS HAPPENED 2 TIMES."~2,000 mi, complaint #1543801
    • "DEALER COMPLETED BRAKE SYSTEM RECALL ON 10-04-2019 N 192268490, NOW I READ ABOUT THE RECALL REPAIR MAY HAVE NOT FIXED PROBLEM, REQUEST ASSURANCE THAT PROBLEM IS FIXED."~20,305 mi, complaint #1641862
    • "THE FIRST THING THAT HAPPENED WAS THAT ALL OF THE ELECTRICAL SYSTEMS ON MY TRUCK WENT OUT AND MY TRUCK WOULD NOT START. IT FINALLY STARTED BUT IT WOULD NOT MOVE FINALLY IT WOULD MOVE BUT VERY SLOWLY THIS HAPPENED ON 11/20/2019 I HAVE DOCUMENTATION THROUGH ONST…"~27,000 mi, complaint #1695975
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while driving approximately 35 MPH, the assist brake warning light was illuminated and the contact had to depress the brake pedal to the floor to stop the vehicle. The contact took the vehicle to the…"~37,000 mi, complaint #1798489
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at various speeds, while depressing the brake pedal to slow down, the brake pedal lost pressure, and the vehicle experienced a reduction in braking power. The contact had to depress…"~135,000 mi, complaint #2093899
  4. #4

    engine cooling

    12 unsafe

    12
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=5)

    • "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 TO…"~42,000 mi, complaint #1731360
    • "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 (113…"~47,000 mi, complaint #1713127
    • "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 VEH…"~58,500 mi, complaint #1713658
    • "AT 55000 MILES THE RADIATOR STARTED TOO LEAK GM WOULD ONLY PAY 250.00 DOLLARS OF THE 876.00 IT COST"~60,150 mi, complaint #1735490
    • "THE RADIATOR IS LEAKING COOLANT WITHOUT ANY REAL CAUSE AND I WAS TOLD THE ENTIRE RADIATOR NEEDS TO BE REPLACED."~64,000 mi, complaint #1724029
  5. #5

    steering electric assist

    11 unsafe

    11
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=5)

    • "WHEN IN TRAFFIC AT ANY SPEED THE STEERING WHEEL WILL ACTUALLY TURN TO THE LEFT. IT TAKES YOU BUY SURPRISE AND IT'S A STRANGE FEELING. I WAS TOLD BY THE DEALER THEIR IS NO ISSUES. VERY SCARY! IT HAPPENS AT ANYTIME AND WITHOUT WARNING."~3,000 mi, complaint #1477028
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at various speeds, there was an abnormal vibration in the steering wheel. There was no warning light illuminated. The contact stated that the tires were replaced, and the wheels and…"~28,000 mi, complaint #2177566
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while driving at various speeds, the vehicle lost power steering assist causing the steering wheel to become firm. The steering wheel jerked while turning and the vehicle stalled on several occasions…"~47,184 mi, complaint #1752665
  6. #6

    torque converter

    10 unsafe

    10
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=7)

    • "PURCHASED VEHICLE BRAND NEW FROM DEALERSHIP AND FROM DAY ONE, I NOTICE THE POWER TRAIN SLOW TO SHIFTING FROM GEAR ONE TO TWO. THE VEHICLE HESITATES AND SOMETIMES SHIFTS HARD ONLY DURING COLD STARTS. EVERY TIME I TAKE IT IN FOR MY SCHEDULE SERVICE I REPORT THE…"~850 mi, complaint #1671668
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at 45 MPH, the vehicle began to shudder, and he decreased the speed. The contact drove to his residence. The next day the vehicle was driving as expected until it became hot and beg…"~22,000 mi, complaint #2043064
    • "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 STE…"~34,000 mi, complaint #1715373
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving approximately 28 - 35 MPH, the vehicle started shaking abnormally. There were no warning lights illuminated. The contact continued driving cautiously. The vehicle was taken to the d…"~66,000 mi, complaint #2035114
  7. #7

    wiring harness

    1 stranded, 9 unsafe

    10
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while driving approximately 35 MPH with the rear window defroster activated, there was a burning rubber odor inside the cabin of the vehicle and there was smoke coming from the rear window area. While…"~60,952 mi, complaint #2061154
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while driving approximately 70 MPH, the trailer wiring harness system warning message was illuminated. The vehicle was taken to a local dealer where it was diagnosed with needing the wiring harness re…"~77,000 mi, complaint #1786910
  8. #8

    abs module

    9 unsafe

    9
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while her husband was inside the parked vehicle, the ABS warning light illuminated. The contact researched the failure and was made aware of NHTSA Campaign Number: 00V055000 (Service Brakes, Hydr…"~112,000 mi, complaint #2029699
  9. #9

    engine stall or no start

    2 stranded, 7 unsafe

    9
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=7)

    • "THE SIERRA SURGES FROM PARK TO REVERSE AND DRIVE. I BUMPED A VEHICLE TODAY, AND THE SURGE HAS BECOME AN ISSUE THIS WEEK AND THERE IS NOT EVEN 9,000 MILES ON THE TRUCK. THE AFM IS ROUGH SHIFTING BETWEEN V8 AND V4 MODE TOO. NONE OF THIS WAS AN ISSUE UNTIL RECENT…"~8,666 mi, complaint #1564025
    • "UPON STARTING THE ENGINE THE VEHICLE MAKES A CLANK SOUND AND EITHER SURGES FORWARD OR BACKWARDS SLIGHTLY. IT SEEMS TO DO IT MORE OFTEN ON A LIGHT INCLINE. LOCAL CHEVROLET ( GM) DEALER HAS LOOKED OVER TWICE, NO SUGGESTIONS MADE OR GIVEN TO ME."~15,000 mi, complaint #1575469
    • "AFTER LONG PERIODS OF RUNNING AND IDLE, VEHICLE STALLS OUT HAS A HARD TIME RESTARTING. GAS PADDLE BEING PRESS HELPS SOMETIMES. CHECK CODE P2635 PLUS OTHERS (RANDOM SECONDARY CODES), COME ON. THIS HAS TAKEN PLACE IN AZ WHERE THE AMBIENT AIR TEMPERATURE TYPICALL…"~35,692 mi, complaint #1692006
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while his mother was driving [REDACTED ADDRESS], there was a popping and ticking sound coming from the engine, and while depressing the accelerator pedal the vehicle failed to respond. The driver was…"~58,000 mi, complaint #2110922
  10. #10

    ac compressor and refrigerant

    5 unsafe, 3 broken

    8
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=7)

    • "A/C STOPS WORKING 2.) MECHANIC DOES VACUUM TEST AND REPLACES REFRIGERANT ($200) FREON 3.) A/C IS BLOWING HOT AIR AGAIN AFTER 3 DAYS; REFRIGERANT COMPLETELY GONE 4.) MECHANIC RUNS DYE THROUGH LINES TO FIND THE LEAK, REPLACES REFRIGERANT AGAIN AND STATES THE PRO…"~35,750 mi, complaint #1659666
    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE AIR CONDITIONER DID NOT COOL WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE KING CADILLAC DEALER, LOCATED AT: [REDACTED ADDRESS], FLORENCE, SC 29501 WHERE IT WAS DIAGNOSED THAT THE CONDENS…"~50,000 mi, complaint #1688735
    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE AIR CONDITIONER WAS INOPERABLE, CAUSING VISIBILITY ISSUES WHILE DRIVING. DUE TO THE FAILURE, THE DEFROSTER/DEFOGGER SYSTEM WAS INOPERABLE. MCCONNELL AUTOMOTIVE ([REDACTED ADDRESS], MOBILE…"~50,724 mi, complaint #1672880
    • "CONDENSER ON AC LEAKING AT SAME LOCATION AS THE 2014-2017 MY. WARRANTY WAS OUT DUE TO MILEAGE BUT TRUCK IS ONLY 2 YEARS 3 MONTHS OLD. BLOWING WARM AIR WHEN AC WAS TURNED ON. *TR"~59,000 mi, complaint #1664243
  11. #11

    other

    6 unsafe, 2 annoyance

    8
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • "I AM 6'8 AND HAVE NOTICE A SERIOUS INCREASE IN THE BLIND SPOT BEHIND THE REAR VIEW MIRROR. ON APPROACHES TO INTERSECTION, VEHICLES ARE HIDDEN AND I HAVE HAD 3 BEAR MISS COLLISIONS IN THE THE SAME NUMBER OF MONTHS. THIS IS MY 3RD GMC SIERRA AND THE ISSUES APPEA…"~2,250 mi, complaint #1498401
    • "I RECEIVED A RECALL NOTICE FOR A BRAKE PROBLEM ON MY TRUCK. THE RECALL GAVE A LOCATION TO TAKE MY TRUCK FOR SERVICE. WHEN I CONTACTED THAT DEALERSHIP THEY SAID IT WAS A CANADIAN TRUCK AND THEY COULDN'T PERFORM THE RECALL REPAIR. SO I CALLED THE GM HOT LIN…"~23,000 mi, complaint #1684936
    • "SPARE TIRE CRANK CABLE BROKE ALLOWING SPARE TIRE TO FALL OUT FROM UNDER THE TRUCK ON THE INTERSTATE AT 70 MPH. SPARE TIRE SLIDE BACKWARDS UNDER MY 5TH WHEEL CAMPER DAMAGING THE CAMPER AND FLYING OFF INTO THE HIGHWAY MEDIAN."~60,000 mi, complaint #1740362
    • "Odometer Fraud. The contact purchased a 2018 GMC Sierra 1500. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 72,000. It was later discovered later…"~241,556 mi, complaint #2136106
  12. #12

    control module

    4 unsafe, 3 annoyance

    7
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Check engine came on and says manufacture specific issues/codes. Safety restrain system. P10e4"complaint #1751180
    • "“Service- trailer brake system” light keeps coming on. It is super repetitive. It comes on about every 30 seconds. It’s a loud beep that lasts quite a few seconds. Eventually, the beeping did not stop until the truck was stopped. Truck was just bought yesterda…"complaint #1802671
    • "Constantly getting “service trailer brakes system “"complaint #1826465
    • "*A message and alarm kept going off on our truck "Service Trailer Brake". We are not towing a trailer, nor had we had a trailer hooked to this vehicle since 2019. It began only going off occasionally, but within a few weeks it was going off constantly. It w…"complaint #1833535
    • "I purchased my 2018 GMC Sierra 1500 pickup truck new in 2018. To date it only has 28K miles on it. I have never used the trailer breaking system that it came equipped with. On 12/24/22 we were traveling to a family function for Christmas. The "service trailer…"complaint #1862240
  13. #13

    airbag system

    6 unsafe

    6
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "STRUCK A DEER WITH THE VEHICLE AT APPROX. 75MPH. THE DRIVER SIDE AIRBAG DEPLOYED. CONTROL OF THE VEHICLE WAS MAINTAINED AND THERE WAS NO SUDDEN DECELERATION. THE COVER OF THE STEERING WHEEL, WHICH BEARS A PLASTIC GMC LOGO THAT IS HEAVIER THAN THE REST OF TH…"~1,800 mi, complaint #1445299
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving approximately 45 MPH on bumpy terrain, the driver’s and passenger’s side curtain air bags deployed unexpectedly. No warning light was illuminated, and there was no impact to the veh…"~80,000 mi, complaint #2183129
  14. #14

    seatbelt and pretensioner

    4 unsafe, 1 broken

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "THE BACK MIDDLE SEATBELT BROKE SHORTLY AFTER THE VEHICLE WAS PURCHASED NEW."~5,000 mi, complaint #1654335
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that the seat belt straps for the rear driver’s and passenger’s side seats would no longer retract and were stuck between the seat cushions. The cause of the failure was not determined however, the lo…"~60,000 mi, complaint #1790772
  15. #15

    suspension struts shocks

    4 unsafe, 1 annoyance

    5
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=8)

    • "AT 40MPH LOUD BANG FELT LIKE WE WERE REAR ENDED, SOUNDED LIKE WE WERE REAR ENDED, HUGE JOLT FORWARD NEARLY CAUSING ACCIDENT, POSSIBLE BACK INJURY, SEATS JOLTED, LOOKED BEHIND US AND NOTHING THERE. WAS DRIVING AT 30-35MPH AND JUST ACCELERATED SLIGHTLY TO PASS…"~6,912 mi, complaint #1563538
    • "WHEN DRIVING THE TRUCK STARTS TO RATTLE AS IS I WAS DRIVING ON A BUMPY ROAD. IT IS NOT CONTINUOUSLY BUT ID HAPPENS OFTEN"~39,000 mi, complaint #1679469
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undetermined speed, the vehicle was shaking while shifting gears. The contact stated while shifting from four cylinders to eight cylinders, the rear-end was shaking violently.…"~50,000 mi, complaint #1855169
  16. #16

    driveshaft axle cv

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=5)

    • "I OWN A GMC SIERRA WHICH IS 14 MONTHS OLD, PURCHASED IN DUBAI UAE FROM ALGHANDI AUTO. THE LAST SERVICE FOR 40000 KMS WAS DONE ON AUGUST 8TH, 2019 AND NO PROBLEM WAS HIGHLIGHTED EXCEPT THE BATTERY THAT WAS SUBSEQUENTLY CHANGED. ON FRIDAY EARLY MORNING (SEP 27…"~29,562 mi, complaint #1629822
    • "WHILE UNDER POWER AND DRIVING, THE TRUCK EXPERIENCES NOTICEABLE VIBRATIONS THAT SEEM TO COME FROM THE DRIVETRAIN."~32,000 mi, complaint #1673775
    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while the vehicle was at an independent mechanic for an oil change, the independent mechanic performed a full inspection of the vehicle. The contact was informed that the CV axles were corroded,…"~93,555 mi, complaint #1987785
  17. #17

    noise or vibration unspecified

    2 unsafe, 2 annoyance

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE VIBRATED ABNORMALLY WHILE DRIVING. THE VEHICLE WAS TAKEN TO INGERSOLL AUTO OF DANBURY ([REDACTED ADDRESS], DANBURY, CT 06810, [REDACTED PHONE]) FOR AN OIL CHANGE AND THE ENGINE WA…"~47,000 mi, complaint #1740476
  18. #18

    power steering hydraulic

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "VEHICLE WAS BEING DRIVEN WHEN SUDDENLY THE POWER STEERING QUIT WORKING AND VEHICLE WAS VERY DIFFICULT TO TURN WITHOUT EXTREME EFFORT."~16,500 mi, complaint #1640815
    • "POWER STEERING JUST GOES OUT WHILE DRIVING (PULLING INTO PARKING LOT) AND THEN COMES BACK ON CAUSING AN OVERSTEERING PROBLEM."~48,000 mi, complaint #1746789
  19. #19

    sunroof

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "THE SUNROOF IN THE 2018 GMC SIERRA EXPLODED OUTWARD OF THE VEHICLE, DROPPING GLASS SHARDS INTO THE CABIN. THE VEHICLE WAS IN MOTION AT ABOUT [REDACTED ADDRESS] WITH NO OVERHANGING OBJECTS THAT MAY HAVE CONTACTED THE GLASS. THE WEATHER FORECEAST FOR THE DAY W…"~8,300 mi, complaint #1521195
    • "I LEFT HOME TO GO TO THE STORE. WHILE DRIVING ON THE HIGHWAY MY SUNROOF EXPLODED. THERE WERE NO CARS OR TRUCK IN FRONT OF ME OR PASSING ME. NOTHING HIT MY TRUCK. IT SOUNDED LIKE A SHOTGUN GOING OFF INSIDE THE TRUCK. THE SUNROOF EXPLODED SENDING GLASS EVERYWHER…"~34,960 mi, complaint #1747224
  20. #20

    tire failure

    4 unsafe

    4
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500 EQUIPPED WITH GOODYEAR WRANGLER SR-A TIRES, SIZE: 265/60R2. WHILE DRIVING 75 MPH, THE CONTACT NOTICED THAT ALL THE TIRES HAD BUBBLES. THE VEHICLE WAS TAKEN TO COULTER BUICK GMC TEMPE (7780 S AUTOPLEX LOOP, TEMPE, AZ…"~24,600 mi, complaint #1584868
  21. #21

    adas collision warning

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Driver Assist-Lane Keeping Assist-Forward Collision Warning-Automatic Emergency Breaking Life Threatening When System Fails and is Intermittent . Vehicle has been said to be dangerous to drive by GM Tech/Can cause life threatening conditions. Fault has been co…"complaint #1782453
    • "The light in the dashboard gose dark and it gives me a warning collision alert and the tiers they spin out of control when turning or when I I’m driving I think it’s the tiers they have a lot of tread still…"complaint #1824129
    • "Drive train:The truck suddenly lurches forward as I'm accelerating and after I've stopped. It's very scary to stop behind a vehicle and suddenly lurch forward. Thankfully, I don't stop too close to another vehicle. The truck also shudders and experiences signi…"complaint #2005879
  22. #22

    alignment and pull

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "STEERING PULLS TO LEFT WHEN DRIVING AT ANY SPEED, AND TERRAIN. PULLS ENOUGH TO TURN YOU INTO ONCOMING TRAFFIC IF YOU DO NOT CORRECT. TOOK TO DEALERSHIP AND WAS TOLD NOTHING WAS WRONG WITH THE TRUCK. STEERING PROBLEM CONTINUES AND IS DEFINITELY A SAFETY ISSU…"~1,500 mi, complaint #1465072
    • "THE FACTORY WHEELS DO NOT GRIP THE ROAD. THIS WAS FROM DAY 1 OF GETTING IT BRAND NEW FROM THE DEALER. THIS HAS LED TO SPINNING THE TIRES, FISHTAILING, AND SLIDING WHILE BRAKING. THIS HAPPENS WITH EVEN MODERATE AMOUNTS OF PUSHING THE GAS PEDAL OR BRAKING WELL A…"~18,000 mi, complaint #1627495
  23. #23

    suspension arms and bushings

    3 unsafe

    3
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Noticed a scraping noise after new, recommended tires installed on my stock truck. Checked the door label to ensure correct tires installed, they were, returned to the tire facility and they recommended I ask a repair facility to investigate. Found that the…"complaint #1886603
    • "The vehicle steering wheel shudders at speeds from 40-55mph. The steering wheel shudders at 2-second intervals and is constant between those speeds. At first, I thought it might be one of the safety systems. It is not. This is unsafe and GM should be held…"complaint #1942375
    • " I have a 2018 GMC Sierra 1500 that I bought new in Oct of 2018 and it now has 15,756 miles on it and was still like new at the time of failure. On May 23rd I was driving the truck when the driver suspension suddenly had an structural failure (mostly the ball…"complaint #1996681
  24. #24

    acceleration loss or hesitation

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=6)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated while accelerating from a traffic light, the vehicle started hesitating. The contact stated no warning light was illuminated. The vehicle was not diagnosed or repaired. A dealer was not contacted. The…"~99,000 mi, complaint #1884851
  25. #25

    battery and charging

    1 stranded, 1 broken

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that the battery had been replaced three times since 2018. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact referenced an unknown recall; however, the VIN was…"~36,000 mi, complaint #2117513
  26. #26

    brake pads and rotors

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Break system is making scratching noises as if it is a caliber breaking problem or a caliber piston problem, it is also setting off the trailer breaking system light on the dash as well as the trail traction control light. "complaint #1888042
    • "The truck is throwing a repeat of service trailer break "complaint #1978179
  27. #27

    engine head gasket

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "ENGINE FAILURE, 5/3/22, 23,987 MILES, ALL LIFTERS WAS REPLACED UNDER WARRANTY, ENGINE FAILURE, 7/6/26, 46004 MILES, TOOK TRUCK IN FOR OIL CHANGE AND WHEN RETURNED HAD A TICKING NOISE. DEALERSHIP NOTIFIED ME THAT CAMSHAFT ISSUES AND METAL DETECTED IN OIL. ENGI…"complaint #2231065
    • "Head gasket failure and overheating. After fixed, power steering has just failed during driving. Will have to have it towed to shop"complaint #2234299
  28. #28

    fuel injector

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "FUEL INJECTION SEALS #4 O-RING SPLIT - LEAKING FUEL - POOLING GAS ON MANIFOLD. TOOK VEHICLE IN FOR SMELL OF GAS, LACK OF ACCELERATION AND POOR GAS MILEAGE. THIS IS KNOWN ISSUE BASED ON THE SERVICE BULLETIN 18-NA-137 - VEHICLE HAS LESS THAN 6000 MILES"~5,460 mi, complaint #1517531
  29. #29

    fuel tank and lines

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Gas leak. My 2018 gmc sierra 1500 has been giving me two codes for evap leak small and large and i notice a black spot on my drive way under the gas tank wich in fact was gas. I can see the gas tank is wet but it comes from the top part of the gas tank. I been…"complaint #1855829
    • "This vehicle has 88400 miles, it out of warranty, which I know this, I use AMSOIL ASM SIG SERIES SYN SAE 0W-20 , 5.3L GAS. TWO YEARS AGO, I CHANGED OIL AT RICHARD BUICK GMC IN DAYTON, OH AND SENT A SAMPLE OF THE OIL TO OIL ANALYZERS FOR AN ANALYSIS, THEY SET I…"complaint #2048226
  30. #30

    hv system fault reduced power

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed and depressing the accelerator pedal, the vehicle failed to accelerate as intended. The message "Reduced Power" was displayed, and the RPMs increased. Add…"~133,742 mi, complaint #2100159
  31. #31

    lighting exterior

    1 unsafe, 1 annoyance

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "PASSENGER SIDE HEADLIGHT JIGGLES UP AND DOWN CONSTANTLY OVER EVERY SMALL BUMP. VERY DISTRACTING AND LEAVES MANY BLACK AREAS ON THE ROAD FROM LACK OF LIGHT. FIX THIS IMMEDIATELY!"~3,000 mi, complaint #1546400
    • "PASSENGERS SIDE LOW BEAM JIGGLES UP AND DOWN WHEN GOING OVER SMALL BUMPS. DEALER TELLS ME ITS A COMMON ISSUE WITH THE PROJECTOR STYLE HEADLIGHTS BUT CANNOT BE REPLACED UNDER WARRANTY UNTIL GM RECOGNIZES IT."~4,000 mi, complaint #1537891
  32. #32

    software or update

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=3)

    • "MY VEHICLE IS HACKED ANYTIME I AM DRIVING THE VEHICLE I AM NOT IN FULL CONTROL. THE VEHICLE STEERS ITSELF LEFT OR RIGHT WHILE DRIVING, THE BRAKES ARE ALWAYS ON WHILE DRIVING SOMETIMES BRAKING HARDER BUT ALWAYS ON. THE INFOTAINMENT SYSTEM HAS MANY GLITCHES. THI…"complaint #1525702
    • "Informant system and instrument clust/panel starts to change with nothing be clicked. Starts to phantom change everything which is deters from paying attention to actual driving becoming a safety hazard. Dealership has tried to update the software and still do…"complaint #1820368
  33. #33

    steering rack mechanical

    2 unsafe

    2
    incidents

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=4)

    • "I WAS DRIVING [REDACTED ADDRESS] 75 IN MCKINNEY TX, WHEN MY STEERING COMPLETELY LOCKED UP. LUCKILY I MANAGED TO GET TRUCK STOPPED AND TOWED BACK TO DEALER. THIS COULD EASILY HAVE BEEN A FATALITY ACCIDENT."~8,128 mi, complaint #1512882
  34. #34

    brake booster

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=2)

    • "MY 2018 GMC SIERRA SLT'S BREAK PEDAL BECOMES EXTREMELY DIFFICULT TO PRESS, AND I CAN HEAR SOMETHING THAT SOUNDS LIKE AIR COMING FROM THE PEDAL. THIS HAPPENS ESPECIALLY AT LOWER SPEEDS.THIS CAUSED ME TO CRASH INTO A CONCRETE WALL AND DAMAGE MY TRUCK. MY TRUCK H…"~10,000 mi, complaint #1579380
  35. #35

    engine mounts

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "I am told by a GMC dealer that my engine mount is cracked/worn and needs replacing otherwise the engine can fall out. My mechanic tells me this is a common problem with GMC trucks; specifically the driver’s side engine mount. Perhaps a recall is necessary if t…"complaint #1935204
  36. #36

    engine oil consumption

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Engine failure. 6.2l with AFM system Extreme oil consumption Heavy metal in oil Loud ticking 120789 miles Purchase date 05/29/2025 Madras, Oregon Chevrolet Dealer"complaint #2163436
  37. #37

    exhaust system

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "The contact owns a 2018 GMC Sierra 1500. The contact stated that after starting the vehicle, there was an abnormal ticking sound coming from engine compartment. The vehicle was taken to the local dealer who diagnosed that the exhaust manifold bolts had fractur…"~64,000 mi, complaint #2042390
  38. #38

    glass and windshield

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "My rear back heated window on the passenger side popped and shattered the window while I was sitting in the passenger’s seat waiting for my husband. The truck smelled like a sweet wire smell and then I heard a loud pop. I looked back and the back window pane…"complaint #1787966
  39. #39

    infotainment head unit

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "The embedded navigation system in my 2018 GMC Sierra is no longer supported. Paid map updates were available until 2023, when General Motors discontinued them without notice. This system was marketed as a core feature and provided offline GPS guidance independ…"complaint #2112956
  40. #40

    paint and clearcoat

    1 annoyance

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "Paint flaking top above windshield within one year of ownership! Paint flaking on left rear door within last month!"complaint #2207560
  41. #41

    power windows and locks

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "MY TRUCK LOCKED ITSELF WITH THE ENGINE RUNNING WHEN I WAS PARKED IN THE DRIVEWAY. ALSO HAVE HAD THE BACK DRIVER SIDE WINDOW ROLL ITSELF DOWN PART WAYS WITHOUT ME INITIATING IT. ANOTHER OCCASION I PUT THE TRUCK IN GEAR TO DRIVE POSITION AND THE BRAKE OR SOMET…"~12,000 mi, complaint #1648710
  42. #42

    seat mechanism

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "TL* THE CONTACT OWNS A 2018 GMC SIERRA 1500. THE CONTACT STATED THAT THE DRIVER'S SEAT MADE POPPING NOISES AND MOVED FROM SIDE TO SIDE WHILE THE VEHICLE MADE TURNS. THE MANUFACTURER ISSUED AN UNKNOWN TECHNICAL SERVICE BULLETIN, BUT IT WAS NOT COVERED UNDER A W…"~28,000 mi, complaint #1596221
  43. #43

    stability and traction control

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "I purchased my Sierra in 2021 and 2 weeks after purchase I got a warning for service stabilitrk and another for trailer brake system. This is very very annoying and also has my abs light on. My next issue is a code u510 for active grille shutter assembly. P…"complaint #1995643
  44. #44

    starter

    1 broken

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "My starter quit at 81,000 miles. It has always been a bit weak starting, but I have never had a starter go out on a vehicle at 81,000. I have replaced it, and the rebuilt starter is better than what was ever on this vehicle. I am also having problems with the…"complaint #2068823
  45. #45

    unintended acceleration

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=1)

    • "I WAS IN THE BANK ATM DRIVE THROUGH AND THE GUY AHEAD OF ME STARTED TO GO, I BARELY PUSHED THE GAS PEDAL AND HE DECIDED TO STOP. I HIT MY BRAKES AND THE TRUCK WAS HARD TO STOP, ALMOST LIKE THE GAS PEDAL RESPONSE WAS STILL IN THE GO MODE BEFORE IT HAD THE CHANC…"~2,900 mi, complaint #1539558
  46. #46

    wiper and washer

    1 unsafe

    1
    incident

    Mileage: suppressed (fewer than 10 mileage-bearing reports; n=0)

    • "When operating my truck two days ago, I smelled something burning. I then noticed a small plume of white smoke coming from the rear driver's side window area. I then noticed my rear defroster was on, which I shut of right of way. About 30 seconds later, I h…"complaint #1788737

Search NHTSA's own recall and complaint database for GMC SIERRA 1500 directly.