2021 Chevrolet Silverado 1500 · symptom sheet
Engine knocking or ticking
- 44owner reports
- 38,000median miles
- 1involved a crash
Newest report Aug 26, 2026 · checked Oct 2, 2026
44 of the 176 reports of engine failure on the 2021 Silverado 1500 describe engine knock.
Part of Engine failure, knocking or rod bearing (176 reports)
Tick what matches of 44 reports
Engine knock on other Silverado 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, 2022, 2023, 2024, 2025, 2026.
What got replaced
Owners who name the part that was replaced mention the engine (6 reports).
Recalls and investigations
One recall on the engine covers the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.
NHTSA investigations into the engine on the Silverado 1500
Loss of motive power due to engine failure post recall remedy. Open.
Loss of motive power due to engine failure post recall remedy. Closed aug 20, 2026.
Loss of motive power due to engine failure. Open.
Loss of motive power due to engine failure. Closed oct 23, 2025, led to recall 25V-274.
Crank position sensor failure - stall. Closed sep 14, 2006.
When it happens
The middle half of failures fell between 18,000 and 52,000 miles, from the 27 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2021 Chevrolet Silverado 1500 that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Service Update. Certain vehicles may present a broken engine valve spring. This may cause the engine to run rough, an engine knocking or ticking noise, a check engine light illumination, or a possible vehicle stall.
What owners wrote
“I have 112,000 miles on my truck and my 6.2l motor is going out or knocking. I am very unhappy that my truck is not covered under the recall and I would like to understand why it is not since this is the issue of the recall. I would like to clarification on this and what options I have since it is going to cost me 14k to replace the motor. Case #101943027”
Filed Jun 16, 2026 · 112,000 miles
“The truck has 61000 miles on it I got it in August there is engine knock which sounds like a bearing mightâve went and now the rod is loose in there. There is a large recall already regarding the same make and model of my truck for this exact issue.”
Filed Dec 26, 2025 · 61,000 miles
“engine is knocking very bad. GM Dealer says it is an issue w/ the piston main bearing and the engine needs to be replaced. Says vehicle should not be driven.”
Filed Nov 17, 2025
“While traveling at highway speed an engine lifter collapsed and I was left stranded with a flashing check engine light, severe engine knocking and lack of power.”
Filed Jun 18, 2025
Should you keep driving it?
This page can't tell you that. 1 of 44 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
- Check engine light or misfire 168 reports
- Engine stalls or loses power while driving 121 reports
- Transmission shudders, slips or shifts hard 95 reports
- Brakes grind, pulse or wear early 44 reports
- Engine overheats or leaks coolant 30 reports
- Engine rattles or ticks 30 reports
- Transmission fails or needs replacement 28 reports
- Power steering cuts out or goes heavy 26 reports
- Tailgate or liftgate will not open or close 26 reports