2020 Chevrolet Silverado 1500 · symptom sheet
Check engine light or misfire
- 107owner reports
- 75,000median miles
- $6,180median quote
- 0involved a crash
Newest report Sep 26, 2026 · checked Oct 2, 2026
366 of the 732 complaints on this car are about the engine. 107 of those describe misfire. Only brake wear is reported more often on this car.
Tick what matches of 107 reports
Misfire 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: 2016, 2025, 2026.
What this problem usually is
These reports start with the check engine light. Many describe the engine running rough or shaking at idle, a P0300-series code, or a catalytic converter code. A worrying number say the light was flashing. Owners often list ignition coils or spark plugs already replaced, and the light coming back afterward.
What got replaced
Owners who name the part that was replaced mention the spark plugs (5 reports), the sensor (4 reports) and the injectors (3 reports).
Recalls and investigations
2 recalls on the engine cover the 2020 model year. A recall on the same system isn't always the same failure, so read the defect text.
The battery positive (B+) cable rings may have been manufactured with excessive glue, potentially causing an intermittent electrical connection between the B+ cable and alternator.
The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
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.
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
Non-crash engine compartment fires. Closed sep 8, 2008, led to recall 08V-441.
Non-crash engine compartment fires. Closed jun 12, 2008.
Crank position sensor failure - stall. Closed sep 14, 2006.
What owners paid
12 of the 107 reports quote a price. Each dot is one quote. The middle half runs $3,700 to $10,000.
When it happens
The middle half of failures fell between 36,000 and 94,000 miles, from the 53 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 41 service bulletins or notices for the 2020 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.
This bulletin advises the tech that the Exhaust Roller Follower may be the issue with the engine Ticking noise, misfire or rough run and what to replace if found the cause.
This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.
This service bulletin provides repair information for Engine Wire Harness Chafing to correct customer concerns of IPC Gauges Sweep, IPC Warning Message, SES/Check Engine/MIL, No Start/ No Crank, Runs Rough, Stalls, Reduced Engine Power, Various DTCs.
This Preliminary information communicates the possibility of DTC P30BF failing on low mile vehicles due to the possibility of the cylinder 1/2 sliding barrel binding on intake camshaft.
37 more on the 2020 Chevrolet Silverado 1500 page.
What owners wrote
“Dfn failure Cylinder 6 140,000 MI oil changes done at 20% using nothing but mobile one full synthetic 0w 20”
Filed Aug 15, 2026 · 140,000 miles
“My problem is the same as many others with the 3.0 Duramax engine. I h e the P0016 code indicating the the timing chain that can cost up to $10k and sudden engine failure if not repaired. My vehicle is only 5 years old and has 98K miles at the moment.”
Filed Aug 10, 2025 · 98,000 miles
“Cylinder Four misfire code. PO304 Dealer has discovered lifter failure. Total to replace all lifters on effected side $4300.00 Vehicle is garage kept and serviced per required dealership. All service records have been kept. No other issues with Truck 83K miles.”
Filed Jun 5, 2025 · 83,000 miles
“Wiring harness defect an on going defect required repair in General Motors products should be a recall. Dealership said a manufacturing error. Now public who buys these vehicles have to pay for General Motors defect. Cylinder cause check engine light to come on. Repairs by Kunes GMC of Beloit WI. invoice [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”
Filed Dec 18, 2024
Should you keep driving it?
This page can't tell you that. 0 of 107 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 Which lights mean pull over now? Warning lights by color and urgency
Other problems on this car
- Brakes grind, pulse or wear early 113 reports
- Engine failure, knocking or rod bearing 92 reports
- Transmission shudders, slips or shifts hard 85 reports
- Engine stalls or loses power while driving 80 reports
- Power steering cuts out or goes heavy 52 reports
- Infotainment, screen or backup camera fails 39 reports