NHTSA Complaint #11681723 — 2018 GMC SIERRA 1500

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11681723
Vehicle	2018 GMC SIERRA 1500
Component	ENGINE
Date of Incident	August 13, 2025
Date Filed	August 19, 2025
Mileage	110,000 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	PA

Consumer Description

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 contact pulled over and used a diagnostic scanner to perform a diagnostic test on the vehicle. The scanner retrieved DTC: P0301 (Cylinder #1 Misfire). The vehicle was towed to a local dealer to be diagnosed, and the contact was informed that the lifters, pushrods, camshaft, sparkplugs, and oil pump were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 111,000.

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