P050D fault code: what 20 owners reported

I am submitting this complaint regarding a 2021 Chevrolet Silverado 1500 Trail Boss 4WD with the [6.2L V8 (L87)], VIN [XXX], 101,000 miles. The truck was assembled in Mexico in XXX, about six weeks before XXX, just outside the build range of GM recall 25V-274 (N252494000, Engine Failure). On 10/2/2026, [XXX], [XXX] a certified GM dealership, diagnosed crankshaft and lifter failure, matching the recall condition. Codes: P0300, P050D, P0016. The truck was shaking violently, the ESC and emergency braking system failed, reducing engine power. GM's Part 573 filing attributes the defect to out-of-specification crankshafts and identifies a Mexico-based crankshaft supplier. I ask GM to confirm my…

Based on dealer inspection, oil was found sitting on top of the #2 piston, and you’ve indicated the failure is originating from the bottom end of the engine—likely involving piston, ring, or cylinder wall damage. Combined with the stored P050D, P0300, and P0302 codes, this represents a clear internal mechanical failure. Vehicle is currently at the dealership. Mechanical failure while driving the vehicle. Sensor light for service ESC and service traction control both showed as the failure was occurring.

I purchased a new 2020 GMC Yukon in May of 2020. Between May 2020 and November 2025 the vehicle was routinely serviced on or before the due date recommend by the manufacturer. I had not experienced issues with the vehicle until November 2020 when the check engine light abruptly appeared and the vehicle began driving very rough. I immediately took the vehicle to the local mechanic who identified two codes (P0300 and P050D) related to the engine issues. The vehicle was towed to the dealership due to the fact that I was instructed it was unsafe to drive long distances without additional diagnostics. The dealership disassembled the engine and found coolant leaking into cylinder six. There were…

Vehicle has been presented for service multiple times for a recurring P050D – Cold Start Rough Idle condition. Due to the repeat nature of the repair, Fleet is requesting that the concern be treated as an unresolved/repeat repair and that the underlying cause be fully diagnosed rather than clearing the code or repeatedly addressing symptoms. Please review prior repair history and document previous repairs, current diagnostic findings, root cause, corrective action, and cold-start verification before returning the vehicle to service. Repaired on 10/23/2026 at Chapman Chevy - Recall Campaign N262547330-02 Telematic Control Module Reprogramming

UNKNOWN . Stabilitrak , power steering drive with care, and steering assist is reduced drive with care light turned on . I was on the freeway with my newborn and the car was slowly giving out and suddenly stopped while in the carpool lane . Took it to the car dealer and did a diagnostics and codes u100,u0101, u0415, and u0073 popped up . This is the second time this same exact thing has happened to me same messages popped up so I took it to the dealer and codes p0300 came out and p050D came out . This malfunction could have caused a serious injury to myself or my family .

Vehicle lost power, debris in cylinder from internal damage, crank case leaking air, oil leaking into cylinder, P0300, P0308, and P050D

Owned brand new vehicle for 48 hours. Fuel injector failure on cylinder 4 at 120 miles on the dash. Check engine light was on. Vehicle is currently at dealership. Engine unreliable/unsafe. Dealer confirmed. Dealer stated up to 10 days waiting on parts. Unknown if further damage has been caused. Wife states vehicle had a rough idle. Diag code P0300, P050D.

My family drove from [XXX] to [XXX]. Upon arrival check engine light came on, we proceeded to a local shop, by the time we arrive check engine light was flashing and engine was knocking and was clearly malfunctioning. Shop owner recommended we transport the vehicle back home as service shops in the area were experiencing high volume and parts shortages. We had vehicle towed to a local shop in [XXX]. The engine is giving diagnostic codes P0300, P050D, [XXX] with internal knocking and tapping. Vehicle has been kept current on all oil changes and has no external leaks. GMC wants at least $12,000 to replace the engine. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5…

While driving and idling, my 2023 Chevrolet Silverado 1500 High Country equipped with the 6.2L v8 engine began experiencing a persistent audible ticking/clicking noise from the engine bay, rough idle during cold starts, and noticeable/abnormal engine vibration. Shortly after, the check engine light came on. When scanned, diagnostic codes P0304 (Cylinder 4 Misfire Detected) and P050D (Cold start Rough Idle) were retrieved. The vehicle was inspected by an authorized Chevrolet dealership, and the service advisor and technician confirmed hearing a consistent clicking noise and documented that they contacted GM's Technical Assistance Center (TAC case #80413912). The service order report states…

Traction control light came on and the vehicle felt like it was going to die/low idle. I took to dealership on 9/13/22 (5months after getting vehicle) and the codes P03000 00 which is an engine misfire, P050D 00 which is cold start rough idle and it was noted by service tech that engine making a clunk and ticking noise. There was a misfire on cylinder 6. They removed the valve cover and the intake valve rocker arm was not moving at all and when the rocker arm was removed they noticed the push rod was also bent. They verified the DFM lifter was collapsed.