Diagsheet

2023 GMC Sierra 1500 · symptom sheet

Engine seized

  • 36owner reports
  • 25,000median miles
  • 1involved a crash

Newest report Sep 22, 2026 · checked Oct 2, 2026

36 of the 114 reports of engine failure on the 2023 Sierra 1500 describe engine seized.

Part of Engine failure, knocking or rod bearing (114 reports)

1 recall on this systemcovering the 2023 model year
1 crashin 36 reports
NHTSA investigations4 covering the 2023

Tick what matches of 36 reports

8
14
1
22
11
2

Engine seized on other Sierra 1500 years

Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2014, 2015, 2016, 2017, 2018, 2020, 2025, 2026.

What got replaced

Owners who name the part that was replaced mention the engine (11 reports).

Recalls and investigations

One recall on the engine covers the 2023 model year. A recall on the same system isn't always the same failure, so read the defect text.

25V-274Apr 24, 2025
Engine And Engine Cooling:Engine:Hard Parts Internal/Mechanical

The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.

Risk, remedy and owner complaints on recall 25V-274

All 3 recalls on the 2023 GMC Sierra 1500, with the owner complaints on each recalled system

NHTSA investigations into the engine on the Sierra 1500

EA26-005opened Aug 20, 2026
Engine · model years 2021 to 2026

Loss of motive power due to engine failure post recall remedy. Open.

RQ26-001opened Jan 16, 2026
Engine · model years 2021 to 2024

Loss of motive power due to engine failure post recall remedy. Closed aug 20, 2026.

EA25-007opened Oct 23, 2025
Engine · model years 2019 to 2024

Loss of motive power due to engine failure. Open.

PE25-001opened Jan 16, 2025
Engine · model years 2019 to 2024

Loss of motive power due to engine failure. Closed oct 23, 2025, led to recall 25V-274.

When it happens

The middle half of failures fell between 22,872 and 38,000 miles, from the 18 reports that gave a mileage.

Complaints by the year NHTSA received them: 2024: 1, 2025: 23, 2026: 121'2423'2512'26

What owners wrote

“I was driving on the Oklahoma turnpike @ 75mph when the engine locked up in traffic. I coasted to the side of the road and called roadside assistance. The truck is currently at Vance GMC in Miami, OK getting the engine replaced.”

Filed Jan 27, 2026

“While driving the vehicle the vehicle stopped, and engine seized. I could not move the vehicle out of neutral nor restart the vehicle to get out of the road. It was towed to our local dealership's service department on 2/16/25 and has been there since. They are stating the vehicle needs a new engine and the engine is on backorder. OF COURSE! This seems to be an ongoing issue with the 6.2L V8 engine for GMC vehicles.”

Filed Apr 24, 2025

“With out any warning the truck stop running at stoplight an would not start back up. We could not move the truck out of the road and blocked traffic for almost 1 hour waiting for the tow truck and getting it loaded on the tow truck (truck would not go in to neutral). The truck is now at the Dealer and they are saying that the engine seized up and will need replaced.”

Filed Mar 17, 2025

Should you keep driving it?

This page can't tell you that. 1 of 36 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.

Guide Paid for this repair before a recall covered it? How recall reimbursement works

Other problems on this car