P0300 on a 2022 Chevrolet Silverado 1500

P0300 is a generic OBD2 powertrain code for random or multiple cylinder misfire. Unlike P0301 through P0308, it does not point to one specific cylinder, so the cause can be ignition, fuel, air, sensor, or mechanical.

Not your vehicle? See general P0300 info.

Most common causes on the 2022 Chevrolet Silverado 1500

Ranked from 577 NHTSA owner complaints filed for this vehicle.

Sort by:

1
Bottom-end bearing failure/engine seizure (GM 6.2L L87 recall N252494001/25V274000)
High severity
A large share of this batch describes sudden, complete loss of power or engine seizure tied to GM's L87 connecting-rod/main-bearing recall; several report a rough-running or ticking engine in the days beforehand, consistent with misfire-like symptoms preceding full seizure.
Reported in 16 NHTSA complaints
2
Camshaft/lifter/valvetrain failure (exhaust roller-follower needle-bearing collapse)
High severity
GM Preliminary Information Bulletin PIP5847B documents this exact failure on these trucks: the roller-follower needle bearings fail and fall out, the roller seizes, and the cam lobe wears through — owners and shops describe ticking/tapping followed by rough running and an explicit misfire condition.
Reported in 7 NHTSA complaints
Parts:lifter camshaft
3
Failing or leaking fuel injector
Medium severity
Two related complaints describe stutter/idle problems traced to (or suspected as) a bad injector, one truck having a second injector replaced without resolving the issue.
Reported in 2 NHTSA complaints
Parts:fuel injector
4
Crankshaft position sensor circuit fault / chafed engine wiring harness
Medium severity
One owner documents an intermittent crankshaft position sensor circuit failure and harness chafing under GM TSB 24-NA-012, causing violent jerks and thrown codes at highway speed.
Reported in 1 NHTSA complaint
Parts:crankshaft position sensor wiring harness
5
Worn spark plugs
Low severity
Fouled or gapped-out plugs fail to fire consistently, producing a random misfire code.
Common cause
Parts:spark plugs
6
Vacuum leaks
Medium severity
Unmetered air entering through cracked hoses or gaskets leans out individual cylinders and destabilizes combustion.
Common cause
7
Carbon-fouled valves
Low severity
Carbon buildup on intake valves disrupts airflow and combustion consistency.
Common cause
8
EGR faults
Low severity
A stuck-open EGR valve dumps excess exhaust gas into the intake, destabilizing combustion at idle.
Common cause
Parts:EGR valve

Part links go to Amazon search results for this vehicle. As an Amazon Associate, WrenchConnect earns from qualifying purchases — always confirm fitment for your exact trim and engine before ordering.

These causes are aggregated from NHTSA owner complaints and general repair knowledge — this is not a diagnosis. P0300 on your car still needs shop confirmation before any repair.

Common symptoms

Flashing or steady check engine light
Rough idle
Shaking under acceleration
Loss of power
Fuel smell from exhaust

What to check before replacing parts

Scan for cylinder-specific misfire codes

Look for: A companion P0301–P0308 pins the misfire to one cylinder — start there. P0300 with no cylinder code points at something hitting several at once: fuel pressure, a large vacuum leak, or timing.

Inspect the spark plugs and coils

Look for: Pull the plugs: black/sooty = rich, oily = oil intrusion, white/blistered = lean or overheating, cracked porcelain or an out-of-spec gap = replace. Then swap a coil to another cylinder — if a cylinder-specific code follows the coil, the coil is bad.

Check fuel trims for a vacuum leak

Look for: High positive short- and long-term trims (worst at idle, improving as RPM rises) mean unmetered air is getting in. Smoke-test the intake and listen for hissing.

Verify fuel pressure

Look for: Compare running/cranking pressure to the vehicle spec. Low or dropping pressure starves multiple cylinders and reads as a random misfire — suspect the pump, filter, or regulator.

Compression / leak-down test if ignition and fuel check out

Look for: A cylinder 15%+ below the others, or leak-down hissing from the intake (intake valve), exhaust (exhaust valve), or oil filler (rings), means the misfire is mechanical — not a swap-in part.

Rather have a pro handle it? Find a vetted local mechanic.

Matching symptoms

Car Runs Rough Flashing Check Engine Light