10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
35,501 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.

2014 GMC Sierra 1500 engine problems

engine problem

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2014 GMC Sierra 1500 Owner Comments (Page 1 of 3)

problem #53

Aug 142023

Sierra 1500

  • miles

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

Engine lifters keep going bad. The frame is rotting like I have never seen. Body is rusting out for second time. Blows lights every month. Rain getting in headliner and under rear seat. Ac breaks every year. All around worst f*cking vehicle I have ever owned. Gmc will not do anything about this. I'm tried

- Cordova, MD, USA

problem #52

Apr 102023

Sierra 1500

  • miles
What component or system failed or malfunctioned, and is it available for inspection upon request" How was your safety or the safety of others put at risk?: The truck just stalls and dies without warning, all lights go off inside and outside and all power is lost. From digging on the internet, I found out the problem is due to one or more rusty/defective connection to ground which stops current from flowing and therefore stalls the vehicle and turns everything off. When the truck stalls, power steering and power assisted breaks are not available and this makes the truck very difficult to guide/stop for most people, making it a significant safety risk to occupants as well as others as the likelyhood of a collision increases significantly. In addition, since all electric accessories are disconnected, warning/flashing lights can not be turned on to advise others that the truck has stopped. Has the problem been reproduced or confirmed by a dealer or independent service center? The problem is hard to reproduce because it happens at random times, it has happened to me at least 5 times in the last month or so. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? NO Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear" NO warning messages or other symptom.

- Houston, TX, USA

problem #51

Aug 112021

Sierra 1500

  • miles
My lifters bent and my valves collapsed. I have had the vehicle repaired twice. No engine light warning. Also in Nov of 2022 oil is leaking into my cylinders. Common problem on several GM forums.

- Bartlett, TN, USA

problem #50

Nov 222022

Sierra 1500

  • miles

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

Going under 15mph, applying the brake causes the pedal to become stiff and lock up and not work. This has caused me to almost hit someone in traffic. I immediately got off the road and got my vehicle to a safe location off the road. Communicating with a dealer today to confirm possible recall issue or potential repairs.

- Elgin, TX, USA

problem #49

Aug 022022

Sierra 1500

  • miles
I had the a/c condensor and low pressure line replaced due to the cracked welds on condensor

- Longview , WA, USA

problem #48

Aug 112019

Sierra 1500

  • 215,000 miles
The contact owns a 2014 GMC Sierra 1500. The contact stated that while her husband was driving approximately 65 MPH, the vehicle lost power steering functionality. The contact stated that an unknown warning light was illuminated and then disappeared. The contact stated that the loss of power steering functionality had increased over time. Additionally, the vehicle had started to stall at low speeds. The contact researched online and related the steering failure to NHTSA Campaign Number: 17V414000 (Steering). The contact noticed that the "Service Park Assist" light was illuminated when the vehicle stalled. The contact had taken the vehicle to a local dealer who was unable to duplicate the failure. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 215,000.

- Murfreesboro, TN, USA

problem #47

Jul 212017

Sierra 1500

  • miles

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

the catalytic converter failed at 110,000 miles and the brake boost hydraulics failed to work properly at 115,000. The electronic stability control started acting erratically at 115,000 miles also.

- De Queen, AR, USA

problem #46

Jun 032022

Sierra 1500

  • miles
My truck recently had an engine lifter fail when pulling out onto a very busy road. When I accelerated hard into traffic my check engine came on and I suddenly lost most of the engine power and it went into limp mode. I was almost rear ended when my truck nearly came to a stop. I was told it is a defective/poor design of the cylinder deactivation system from the dealer. Ther is no fix but to replace with the same lifter part number which was done and it also failed again 4 days later in a similar situation turning onto a road into traffic. My truck is now back in the shop to have lifters replaced twice in one weeks time.

- Crystal Lake, IL, USA

problem #45

Apr 302022

Sierra 1500

  • miles
AFM lifters are failing at a high rate. Had lifters replaced for $3k a year an half ago at 125k miles and they failed again at 149k miles just recently The problem is getting worse with the newer models

- Las Vegas, NV, USA

problem #44

Apr 012022

Sierra 1500

  • miles
My vehicle recently started "shuttering" while driving. Service report says it is a "common GMC issue with the Torque Converter", $3200. They also reported a "substantial leak" in the radiator, and again, says it is a very common fault of GMC Trucks. And another $2700. If these conditions are as common as they indicate, why are there no corrective measures?

- Kingsford, MI, USA

problem #43

Feb 172022

Sierra 1500

  • miles

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

Stability control Truck felt no power and on off on again It happened suddenly How to fix?

- Houston, TX, USA

problem #42

Jan 122022

Sierra 1500

  • miles
Cooling system radiator failure. GM has issued a factory bulletin on the known issue Bulletin No.: PI1513F. This could cause safety issues while traveling and have a radiator failure that is know by

- Kennett Square, PA, USA

problem #41

Jan 032022

Sierra 1500

  • miles
It turned off while driving on freeway I immediately put on N and start back up. It also pulls back as I-€™m driving normal 35mph. My Rpm gaug goes up to 3 while driving down hill and locks

- Bakersfield, CA, USA

problem #40

Sep 102021

Sierra 1500

  • miles
engine has a little over 137k engine shut down vehicle towed mechanic reports approx. 1 gal of dexcool in oil pan. heads removed. mechanic reports valve failure, resulting in piston implosion and engine lock up. cost so far is at 7500.00

- Camden, SC, USA

problem #39

Apr 052021

Sierra 1500

  • miles
From time to time the vehicles power system will surge, blink, and generally act up. The priblem is intermittent. The check engine light will come in then go off, the engine has completely cut off several times while driving, the transmission acts up, radio will turn off, 120v outlet will turn off, occasionally the vehicle will fun for 5-15 seconds after being turned off and then sputter off. And 95% of the time the truck is absolutely fine.

- Olivet, MI, USA

problem #38

Jun 062021

Sierra 1500

  • miles
While passing a vehicle I lost all electrical power which in turn caused the vehicle to lose power. This same thing has happened several times at low speeds. I have the vehicle scheduled for July 2 to get looked at. The engined revved extremly high and it seemed like the transmission went into neutral. It then restarted. I had to roll the driver's window down and got a stabili Trak light that came on after the incident.

- Anchorage, AK, USA

problem #37

Jun 012019

Sierra 1500

  • 30,000 miles
The contact owns a 2014 GMC Sierra 1500. The contact stated while driving the vehicle, the steering wheel would violently shake and vibrate before the vehicle shut-off. Later the vehicle was restarted and operated as normal. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The manufacturer was also notified of the failure. The failure mileage was 30,000.

- Clearwater, FL, USA

problem #36

Dec 042020

Sierra 1500

  • 64,000 miles
The truck shuts off while driving which disables the power steering, engine and power braking. The electrical systems seems to reboot and turn back on after a second or two. This also happens occasionally while driving at slower speeds and turning the steering wheel or after hitting the turn signal. I have had the entire electrical system and engine shut off while doing 50mph on the high just because I turned my turn signal on. This happens every 4 weeks or so. You can tell it is about to happen when the headlights start deeming when tapping the brakes or using the turn signal. It usually happens when the truck is in motion. It has happened in all temperatures. After it happens the console states "stablitrak is disabled".

- Hockessin, DE, USA

problem #35

Aug 252020

Sierra 1500

  • miles
I own a 2014 GMC Sierra and the air conditioning condenser has gone out. This should be a recall since so many GMC & Chevrolet are having the same problem and no help is being offered to us. What a disappointment from GMC. If I would of been notified of this defect I would have never purchased these truck. Now I'm driving around in 110 degrees with my little son. Recall and fix this.

- Riverside, CA, USA

problem #34

Jul 222020

Sierra 1500

  • 82,500 miles
My vehicle turned completely off and it put my breaks to the floor at 26 mph. My steering locked also as if I turned it off. Prior to this happening 3 months my steering column has a popping feeling. Not noise. Feeling. When I took it to the shop, they read the code and it said something along the lines of communication error. Dealership couldn't find anything wrong, took apart steering column nothing was loose and popping stopped also had battery replaced 7 months prior and no bad connections. Received my truck back, was good until a week ago the popping feeling, is back.

- Sioux City, IA, USA

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