2015 Chevrolet Silverado 2500: sudden loss of power

Filed Sep 13, 2023 · Fuel system · CA

Per a report from Car Complaints, the lawsuit alleges that 2011- through 2016-model-year Chevy Silverado and GMC Sierra pickups equipped with the 6.6L V8 LML turbodiesel Duramax engine are equipped with defective Bosch CP4 fuel pumps that are more fragile and prone to wear than previous CP3 fuel pumps. According to plaintiffs, the defective CP4 pumps can be destroyed by U.S. diesel fuel, which is allegedly “drier” than diesel fuel in other countries. The lawsuit alleges that U.S. diesel fuel does not provide adequate lubrication for the CP4 fuel pump. The lack of lubrication can lead to internal fuel pump damage and result in metal shavings that damage the pump, the fuel system, and the GM Duramax engine as well. This damage can lead to the truck stalling and losing power, and may require the vehicle to be towed to a shop, leaving customers with big repair bills. The lawsuit goes on to allege that GM was aware that the Duramax engines and related fuel pumps were defective prior to selling affected vehicles, but declined to notify customers. Rather, GM allegedly concealed that the defective CP4 pumps may be destroyed by U.S. diesel fuel.

Filed Mar 6, 2023 · Engine, Fuel system · MS

Fuel pump failure while driving highway speed 70mph pulling a trailer. Engine light came on and engine went to limp mode for a few seconds then completely shut down without warning while still going at least 60. Lost power steering and power brakes. Service center confirmed the code for "low fuel rail pressure" and did the repair. I have retained the CP4 pump for analysis. I was very lucky to not crash my truck.

Filed Aug 29, 2022 · Brakes, Electrical · PA

I was driving my 2015 Chevrolet Silverado 2500HD and towing my thirty foot travel trailer I suddenly received a banner on the center of my dash to "SERVICE TRAILER BRAKING SYSTEM" at which time I lost power to my trailer brakes. Not only did I lose power to my trailer brakes for the remainder of my trip but I also had to listen to a dinging noise for over 2 hours while driving. Between the brakes not working and the non stop distraction from the dinging, I did not feel safe at all along with worrying about my wife and kids who were also in the vehicle.

Filed Jul 13, 2021 · Engine · 280,000 miles · MI

The contact owns a 2015 Chevrolet Silverado 2500. The contact stated while driving 70 mph, the vehicle loss motive power and stalled and shifted into reduced power mode. The contact had the vehicle towed to the local dealer who inspected the vehicle and diagnosed the vehicle was a Diesel Exhaust Fluid build-up which caused an extreme burn in the exhaust fluid. The dealer replaced the DEF system and exhaust lines to fix the vehicle however, the failure persisted. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 280,000.

Filed Dec 14, 2019 · Electrical · 44,000 miles · NY

T truck shuts off wile driving making me lose all power steering and power brakes. This happens wile driving. Gm knowes there is a problem , they allready built a replacement part.

Filed Nov 22, 2019 · Electrical · 35,000 miles · AR

Tl* the contact owns a 2015 chevrolet silverado 2500. While driving at an unknown speed, the vehicle lost power and proceeded to roll out of control. There was no warning indicator illuminated. The vehicle was taken to reliable chevrolet (972‑201‑9240, located at 800 n. Central expy, richardson, tx 75080), but the cause of the failure could not be diagnosed. The manufacturer was made aware of the failure and stated that the vehicle performed as expected. The vehicle was not repaired. The failure mileage was approximately 35,000.

Filed Jun 14, 2018 · Fuel system · 75,000 miles · MN

The def fluid indicater is stuck at 24%, there are many instances on the internet of the same vehicle with the same problem, some dealers fix for free with a simple software upgrade, other like mine want to charge me diagnostics and mechanics time running into a couple hundred dollars, with so many vehicles having this and gm won't do anything about it, been on the phone to gm several time with no help. With this stuck at 24% you could run low on def fluid and not know it and the truck will lose power and not let you go faster than 5 miles an hour. Which could cause many safety issues. There even is a tsb on this and how to fix, but if your out of warranty it's my cost. 22214 bulletin pip4884q c/s

Filed Nov 27, 2017 · Engine · 117,000 miles · MI

There definitely a problem with the def & emission sensors on gm's duramax engines. 4th time engine unexpectedly reduces engine power while traveling at highway speeds. Results in sudden speed reduction which is extremely dangerous in almost any driving environment. These "reduced engine power" modes related to monitoring diesel emissions will get someone injured or killed (if it hasn't already)

Filed Oct 16, 2017 · Steering · 36,600 miles · CA

Lose power steering when making right hand turns as very low speeds. Issue has been periodic and on going.

Filed Aug 7, 2017 · Steering · 45,000 miles · SC

Losing power steering at low speed turns. Has almost caused several accidents.

Filed Nov 23, 2016 · Electrical, Steering · 15,000 miles · TN

Tl* the contact owns a 2015 chevrolet silverado 2500. The contact stated that the vehicle experienced a loss of power steering and a loss of power while driving at low speeds. The failure occurred without warning. The vehicle was taken to the dealer where it was diagnosed that the steering position sensors and the gear box were defective and needed to be replaced. The vehicle was repaired; however, the failures recurred. The manufacturer was notified. The failure mileage was approximately 15,000. The VIN was not provided.

Filed Jun 17, 2015 · Electrical · MA

Vehicle has had several electrical issues, including backup camera not functioning, radio info screen disappearing, traction control must be turned off in order to have reasonable throttle response when under 40 degrees outside, most significant is the fuel pump fuse blowing multiple times and shutting the engine down which creates an unsafe condition since there is a sudden loss of power. Chevrolet unwilling to repair and is refusing to return calls on my inquiry about the safety of this vehicle.