pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
3,298 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.

2015 GMC Sierra 1500 engine problems

engine problem

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2015 GMC Sierra 1500 Owner Comments

problem #3

Apr 072016

Sierra 1500

  • 3 miles


I bought this truck new in 4/2106 and there is a clicking sound when engine is running. Is this normal?

- Stony Brook, NY, USA

problem #2

Jan 022016

Sierra 1500

  • 5,000 miles
2015 GMC Sierra has a delay throttle response. Does it at all speeds and from take off. Took to dealer and service advisor pulled truck in shop. Got out and said it does have a delay. The ran VIN number through GMC data base and told me. Manufacture said it was a normal thing. It's not normal and never had a vehicle with a throttle delay.

- Perrysburg, OH, USA

problem #1

May 182015

Sierra 1500

  • 4,892 miles
Made 1 trip out of state to visit my son and to carry him a bedroom suite. I live in ga. And he lives in tenn. When I returned I noticed fluid under the truck. Called dealer in brunswick ga. They said to bring the truck then. When truck was put on rack, found engine heads were faulty. Had to order new heads, then had to machine heads when arrived. Also transmission down shifted extremely hard in hills of North ga. To the point of engine RPM 4500. Contacted GMC complaint dept. But as of 6/2/15 no help.

- Jesup, GA, USA

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