P0301 Chevrolet Tahoe
Cylinder 1 Misfire Detected · Powertrain Code · High · Repair: Easy
What is P0301?
Misfire detected in cylinder 1. Typically caused by a worn spark plug, bad ignition coil, faulty fuel injector, or low compression in that cylinder.
When the Chevrolet Tahoe triggers code P0301 (cylinder 1 misfire detected), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Chevrolet Tahoe.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Chevrolet Tahoe.
Common Causes on Chevrolet Tahoe
- Ignition coil failure on cylinder 1 coil-on-plug on 5.3L/6.2L V8
- AFM lifter collapse on cylinder 1 (common V8 issue)
- Spark plug worn or incorrect gap on high-mileage V8
- Fuel injector malfunction or carbon deposits on cylinder 1
Symptoms
- Rough idle with noticeable engine vibration
- Engine shaking or vibration especially at idle
- Loss of power during acceleration
- Check engine light flashing (indicating catalytic converter damage risk)
- Poor fuel economy from unburned fuel
- Unburned fuel smell from exhaust
Notes for Chevrolet Tahoe
Same V8 platform as Silverado; AFM lifter collapse should be checked if coil swap does not resolve.