NHTSA Complaint #11403994 — 2018 GMC SIERRA 1500

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11403994
Vehicle	2018 GMC SIERRA 1500
Component	ENGINE
Date of Incident	February 28, 2021
Date Filed	March 20, 2021
Mileage	33,000 miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MI

Consumer Description

WHILE DRIVING WITH THE ROADS IN A WET CONDITION, FOR VARIOUS LENGTHS OF TIME, AND IN DIFFERENT MANEUVERS, THE SERVICE ENGINE LIGHT WILL START FLASHING AND THE VEHICLE WILL BEGIN TO LOSE POWER. AFTER A FEW MINUTES, THE SERVICE ENGINE LIGHT WILL GO SOLID AND THE TRACTION CONTROL LIGHT WILL ILLUMINATE. THE VEHICLE LOSES MORE POWER. ON BRAKING, JUST BEFORE THE VEHICLE COMES TO A COMPLETE STOP, THERE IS A CLUNK IN THE TRANSMISSION AND THE VEHICLE LURCHES. THIS HAS OCCURRED 6 TIMES IN THE LAST 14 MONTHS. UPON INVESTIGATION, TROUBLE CODE P0308 SHOWS IN THE OBD TOOL. THE ISSUE COULD NOT BE REPRODUCE BY THE DEALERSHIP SO THERE HAS NOT BEEN ANY RESOLUTION, JUST THOUGHTS.

Related Complaints for the 2018 GMC SIERRA 1500

Other ENGINE Complaints

#11714207 — January 29, 2026 — The contact owns a 2018 GMC Sierra 1500. While starting the vehicle, it was shaking violently, with reduced power. Th...

#11712288 — January 20, 2026 — I OWN A 2018 GMC SIERRA DENALI ULTIMATE, The truck has the 6.2 engine which had the lifter issue as stated with the c...

#11711924 — January 19, 2026 — The lifters in my engine collapsed. This caused a push rod to be bent and the cam shaft to be damaged causing thousan...

#11709032 — January 6, 2026 — Engine failure. 6.2l with AFM system Extreme oil consumption Heavy metal in oil Loud ticking 120789 miles Purchase ...

#11705013 — December 15, 2025 — I have 125,000 miles on my truck. I was traveling with my grandkids in the back seat. We were going through a four wa...

Recent Complaints for the 2018 GMC SIERRA 1500

#11719391 — POWER TRAIN — February 20, 2026 — The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle j...

#11718452 — POWER TRAIN — February 17, 2026 — The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at various speeds, there was an abnorm...

#11714207 — ENGINE AND ENGINE COOLING — January 29, 2026 — The contact owns a 2018 GMC Sierra 1500. While starting the vehicle, it was shaking violently, with reduced power. Th...

#11712288 — POWER TRAIN — January 20, 2026 — I OWN A 2018 GMC SIERRA DENALI ULTIMATE, The truck has the 6.2 engine which had the lifter issue as stated with the c...

#11711245 — POWER TRAIN — January 15, 2026 — The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle w...