4.7

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
22,908 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2015 GMC Sierra 1500 drivetrain problems

drivetrain problem

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2015 GMC Sierra 1500 Owner Comments (Page 1 of 4)

problem #67

Jan 032024

Sierra 1500

  • miles

A D V E R T I S E M E N T S

I would like to bring to your attention an alarming incident that occurred on January 3, 2024, with my truck. While accelerating onto the highway, the engine and drivetrain failed suddenly, posing a significant safety risk. The failure left the engine incapable of functioning properly, which could have resulted in a catastrophic accident. Seeking answers about the cause of this dangerous malfunction, I promptly arranged for an inspection by RNZ Concepts. After evaluation, they suspected a potential problem with the hydraulic lifter or camshaft. It is baffling to note that, other than an initial transmission replacement, there were no further indications of any underlying issues, as the truck is regularly serviced. Additionally, within 60 days of purchasing the vehicle, similar issues arose, requiring additional repairs that were paid out-of-pocket at the time. Now, the vehicle is once again out of commission due to persistent GMC failures. The estimated repair cost is expected to be between $6,000 and $10,000.

- San Diego, CA, USA

problem #66

Nov 012023

Sierra 1500

  • miles
Vehicle has jerking and feels like you are being hit. scared for my safety. Have taken my my Vehicle to a transmission shop for investigation.

- Camden, SC, USA

problem #65

Mar 012023

Sierra 1500

  • miles
The contact owns a 2015 GMC Sierra 1500. The contact stated that there was an abnormal clunking sound coming from the vehicle with the check engine warning light illuminated. The vehicle was taken to Quality Buick GMC, INC. (7901 Lomas Blvd NE, Albuquerque, NM 87110) and Pitre Buick GMC- (9737 Eagle Ranch Rd NW, Albuquerque, NM 87114) and the contact was informed that the failure was related to the transmission and the contact was provided an estimate for the repair. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 100,000.

- Rio Rancho, NM, USA

problem #64

Aug 162017

Sierra 1500

  • miles

A D V E R T I S E M E N T S

The same part number in the other models are for recall except this model.

- Phoenix, AZ, USA

problem #63

Jul 262023

Sierra 1500

  • miles
Transmission was shuddering and slipping and then completely went out. Would not engage any of the gears. This happened while driving through the mountains without towing anything. My family and others on the mountain were at risk since the transmission was slipping out of gear and no safe place to pull over. It had to be towed to a dealer and they confirmed the transmission was toast and they replaced it, of course not under warranty. $800 tow bill and $6.893.98 to replace the transmission at a GM Dealer...Also, had to get a rental car ($318).

- Batavia, IL, USA

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problem #62

May 082023

Sierra 1500

  • miles
Vehicle has a history of hard shifting and jumping forward under certain conditions. In April 2019, while on the highway traveling about 65 mph, the vehicle slipped out of gear and do no longer be driven. No warnings were displayed prior to the incident. The dealer replaced the torque converter and repaired a broken transmission shaft under warranty. Hard shifting and jumping continued to occur, but the vehicle went without incident for another 4 years. Yesterday, 5/8/2023, the transmission went out again while driving around 35 mph. Vehicle is currently at dealer. My research has shown there is a class action lawsuit in 26 States for transmission issues for GMC vehicles between 2015-2019. NHTSA needs to take action and issue a recall. Losing a transmission while driving is dangerous.

- Saint Charles, MO, USA

problem #61

Oct 102018

Sierra 1500

  • 30,000 miles

A D V E R T I S E M E N T S

The contact owns a 2015 GMC Sierra 1500. The contact stated that while shifting from drive (D) to park(P), the contact heard a loud clunking sound. Additionally, while driving and downshifting the contact heard the loud clunking sound. The contact also stated that while driving at an undisclosed speed, the transmission slipped while shifting from 1st to 2nd gear, and the vehicle failed to immediately accelerate. The contact stated that the failure occurred more during the winter months. The vehicle was taken to the local dealer who reprogrammed the TCM however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 30,000.

- Lansing, IL, USA

problem #60

Mar 282023

Sierra 1500

  • miles
My 2015 GMC Sierra SLT with 92K miles was in the shop (3/28/23) for a recall on the brake vacuum pump and they advised me that the oil cooling lines are leaking. They advised me of the potential safety hazard of fire and vehicle damage. There are no warning indications on the dash about this problem. I spoke to a local shop and they advised me to file a report as they have done 2 in the past week. I didn't get it fixed yet as I have a work truck that I drive and this doesn't get driven hardly ever.

- Mannsville, NY, USA

problem #59

Feb 092023

Sierra 1500

  • miles
I tried to buy a car at car dealershipin lafayette oregon ( Pouya Auto sales) gmc sierra 2015 black. on the date 02/09/2023. They soldme this car with ABS, cruscontrol, presusre tires ligths on dashbord. the financial bank recomend me to bring the veicule back to the dealership to have them to fixed.. they didnt want to continue with the contract anymore and canseled. now they want to sell the truck to some one else. and is not safe to drive it with this isuuses

- Vancouver , WA, USA

problem #58

Jan 162023

Sierra 1500

  • miles
I was driving my GMC Sierra upon entering the highway, I was at a stop sign waited for clear traffic when it became safe to do so, I entered the highway and upon excelling up a small incline the vehicle transmission just completely stopped working so as I depressed the accelerator the engine would would wind the RPMs up but the vehicle wasn't going anywhere. I pulled the car over to the side of the road and placed the car in park. Put my emergency lights on and couldn't get the truck to the to go to the area to be free and clear of traffic to transmission engage. I put the car into reverse this is the second time this has happened and this is what my husband recommend I do. When I called him is to place the vehicle in reverse reverse a little bit and then place the car into park and then turn it off. Start the car up again and see if it would engage the gear, it took placing the vehicle in park. After adjusting the steering column and trying it again, the transmission engaged but would not reach the full acceleration. I was on a hill so I put the brakes on and the car brakes would not stop the vehicle. It would bounce and skid a bit as I was on an incline. The transmission was not engaging in reverse either. After resting then it didn't get any speed. There are RPMs just kept whining out. I wasn't able to at first get the car to go into gear after wiggling or adjusting the steering column then it seemed to go in gear but it would only go a few feet and then it the process would start over. this was dangerous as I was on a highway with an incline which means I had no break ability so I was rolling without control. I was able to get the car home and parked in my driveway but as this is the second event that has happened since we purchased the truck I'm making this report. Feel free to contact me if needed

- San Andreas, CA, USA

problem #57

Mar 162022

Sierra 1500

  • miles

A D V E R T I S E M E N T S

At 101,000 miles I experienced my check engine light and Stabilitrak dash lights coming on and the engine spuddering. I replaced the fuel injectors, spark plugs, spark plug wires, coil packs. I-€™ve taken it to two mechanics one told me that number eight cylinder was low on compression and the other mechanic told me that he has seen very many of the same motor that I have, with the problems associated with the lifter recall. I don-€™t know what to do. I-€™ve heard that the fix is the same part so it-€™s just going happen again. This is horrible, from a consumer standpoint Especially since GM has known about this since 2007 with their AFM/DFM motors. I would love to hear back from you pertaining to what my options would be for repair and payment. Thank you for your time and have a good day.

- Maple Valley, WA, USA

problem #56

Jul 092022

Sierra 1500

  • miles
The transmission has a HORRIBLE VIBRATION when driving. Either going slow or fast.

- Brookhaven, MS, USA

problem #55

Jun 172022

Sierra 1500

  • miles
The 8-speed transmission in 2 and 3 gear exhibits a hard shift...no slippage. When slowing down to a stop you hear what sounds like two steel barbell weights slamming together. You feel like the transmission will break and leave you in the middle of an intersection. I have visited the dealer and they state this is normal. My vehicle only has 41000 miles on it. This has been an issue for me for the last 3 years.

- Sanford, NC, USA

problem #54

Mar 012022

Sierra 1500

  • miles
The transmission is lurching forward when initially put into "D" then when driving it seems to be confused on which gear to go into especially between 40- 50. The other problem is the truck will make a shudder like driving over a washboard but only on smooth pavement, then shift into allow gear and the engine will rev up. is this something that the dealer will repair. I'm concerned to drive it.

- Rockport, ME, USA

problem #53

Feb 052022

Sierra 1500

  • miles
The same exact vehicle my sister has and it has the same problems. But mine not on the recall, its the same model and the same year

- Na, CA, USA

problem #52

Feb 032022

Sierra 1500

  • miles
Everything is horrible in the truck

- P, AL, USA

problem #51

Feb 022022

Sierra 1500

  • miles
Na

- Phx, AZ, USA

problem #50

Feb 052022

Sierra 1500

  • miles
Na

- Ny, CA, USA

problem #49

Feb 022022

Sierra 1500

  • miles
Unknown

- Phoenix, AZ, USA

problem #48

Jan 132022

Sierra 1500 8-cyl

  • miles
at first my brakes began locking up on the vehicle, almost as if they were pumped full and not able to press down any longer, shortly after that the stabilitrack light came on and white smoke began to come out of the exhaust as well as a slight shake in the engine, i immediately turned the vehicle off and parked it, mind you i bought the vehicle 1 day ago and it is already broke down, the issue is with gmc and these sensors they are using they are faulty engine reduces speed and it is not safe to say the least.not only that but had the exact same problems with my Gmc Acadia which i finally got the light to stop going off after replacing transmission, brake pedal position censor, as well as gas pedal position censor, also had the throttle body replaced, Do you all make products that are worth anything, nothing was ever done about the Acadia, the Gmc sierra is a 2015 with 70,000 miles on it this car should not be acting like this please contact me at [XXX] thank you so much for your time, also there are 14 recalls on this year truck yet mine shows that there are 0 recalls to be fixed I am wondering about this as well. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Duquoin, IL, USA

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