GMC Sierra
P0300
The P0300 code indicates a random/multiple cylinder misfire detected in a 2019-present GMC Sierra T1XX. This could lead to engine performance issues and increased emissions.
42 SolutionsP-CodePowertrain
P
Error Code Type
Powertrain
Components
1 affected
Engine
Symptoms
10 common
- •Check engine light illuminated
- •Rough idle
- •Loss of power during acceleration
- +7 more
Most Affected Generations
1 generation
T1XX
42
Top Affected Components
1 component
Engine
42
Severity Levels
1 level
high
42
Quick Facts
42
Total Solutions
1
Affected Components
10
Common Symptoms
1
Generations
All Solutions
Showing 42 of 42 solutions for error code P0300 across all generations.