9.9

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
200 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.

2018 GMC Sierra 2500 miscellaneous problems

miscellaneous problem

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2018 GMC Sierra 2500 Owner Comments

problem #5

Jul 232023

Sierra 2500

  • miles

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

driving at 70mph, thread from tire blew.. That was in July, I went and purchased another tire from Bob King GMC Wilmington, NC. The first tire that blew was now discontinued so I purchased another Good Year. On Friday I noticed that another tire on my truck had a bubble along the threads again. It was also getting ready to blow like the first tire. I went to the dealer and they told me the tire I purchased (Good Year) was also discontinued... Please look into this matter.. They have faulty tires and this matter could have turned out with a death.. It isn't the dealers fault it is Good Year.... I have also read on line this isn't the first time people are complaining about the threads coming apart....

- Wilmington , NC, USA

problem #4

Jan 022023

Sierra 2500

  • miles
I have a 2018 GMC Sierra Duramax Quad-Cab and when it is connected to either my boat, stock trailer, or cargo trailer the lights and electric trailer brakes on the trailers do not work. and the chime from the "Service Trailer Brake" indicator sounds and doesn't stop until I unplug my trailer harness from my truck making it a distraction and an unsafe situation when trying to navigate through traffic(changing lanes, stopping, and other functions needed when hauling trailers). The dealership said it was a module and specified which one and so I elected to replace it myself and it wasn't the issue. I choose to do the work myself as they quoted me a price of $700+ to repair the problem.

- Star, ID, USA

problem #3

Oct 142022

Sierra 2500

  • miles
Water leak, known in other years of the same model vehicle, caused the rear defrost to fail and smoke when in operation nearly causing a fire in the vehicle as it was being operated.

- Ravensdale, WA, USA

problem #2

Oct 312021

Sierra 2500

  • miles
Diesel exhaust fluid systems limited to slower speeds causing traffic back up. Issue is these components are failing on these trucks. Mine failed with in 3 yrs of manufacture date.

- Baker, FL, USA

problem #1

Dec 052018

Sierra 2500

  • 1,000 miles
Rear camera only works intermittently and never early mornings when truck is put in reverse. A blue screen comes up with 'service back up camera ' on screen.

- San Pedro, CA, USA

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