2017 Chevrolet P0300: What It Means & Is It Safe to Drive?
P0300 on the 2017 Chevrolet: Random/Multiple Cylinder Misfire Detected. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The PCM has detected misfires across multiple cylinders. This can cause damage to the catalytic converter if driven for long.
Common causes on the 2017 Chevrolet
- Worn spark plugs or ignition coils
- Clogged or bad fuel injectors
- Low compression
- Vacuum leak, bad MAF, or fuel delivery issue
Symptoms
- Check Engine Light (often flashing under load)
- Rough idle, shaking, loss of power
- Possible smell of unburned fuel
Typical fixes
- Replace spark plugs and coils as needed
- Clean or replace fuel injectors
- Fix vacuum/fuel issues
- Compression test if no obvious cause
Repair cost range
For a 2017 Chevrolet, repairs for P0300 typically fall between $150 and $1200, depending on the root cause and labor rates in your area.
Known issues on Chevrolet
Chevrolet P0300 on 5.3L LS V8 is critically linked to AFM (Active Fuel Management) lifter collapse—when an AFM lifter fails, that cylinder goes dead and the ECU may not isolate it to a single cylinder code, instead logging P0300. If you see P0300 with a lifter tick on a 5.3L, the AFM lifter assembly needs to be replaced. On Equinox and Malibu 2.4L Ecotec, P0300 following P0171 (lean) is the progression—the lean condition causes misfires. Check the valve cover PCV diaphragm first.
Most commonly affected models