What does code P0302 mean on a Chevrolet and is it safe to drive?
P0302: Cylinder 2 Misfire Detected. Here's what it means on your Chevrolet, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
PowertrainHigh urgency
What this code means
The PCM has detected a misfire on cylinder 2. Same logic as P0301, but for a different cylinder.
Common causes for your Chevrolet
- Worn or fouled spark plug on cylinder 2
- Failing ignition coil
- Leaking or clogged fuel injector
- Low compression on cylinder 2
Symptoms
- Check Engine Light
- Noticeable shaking, especially at idle
- Loss of power or hesitation
Typical fixes
- Replace spark plug/coil on cylinder 2
- Clean or replace injector
- Address internal engine problems if compression is low
Repair cost range
For a Chevrolet, repairs for P0302 often fall between $150 and $900, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Chevrolet
On GM 5.3L V8, cylinder 2 is a non-AFM cylinder, so P0302 usually points to a coil or plug rather than a lifter issue. On 3.4L V6 Equinox, intake manifold gasket failure between cylinders 2 and 3 is a common misfire cause—check coolant level and look for a sweet smell at idle.
Most commonly affected models
Silverado 5.3L 2007–2014Equinox 3.4L 2005–2009TrailBlazer 4.2L 2002–2009