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2019 GMC Sierra 1500 Denali 5.3L Cylinder 3
Vehicle came in with a p0300, and a feeling of misfire. With scanner, could see that #3 is a constant miss. Whenever I restart the vehicle, there is a good amount of white smoke coming out of the tailpipe. Pulled the #3 plug and it was black and wet. Used ...
FIX posted 12/23/2025
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Message Closed w/FIX
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| VIN | 1GTU9FED2K |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 8-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Cylinder 3 |
| Conditions | Oil Intrusion |
Message Closed w/FIX
Vehicle Data
2019 GMC Sierra 1500 Denali
| VIN | 1GTU9FED2K |
| Engine | 5.3 L / 8 cyl / GAS |
| Trans | 8-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Cylinder 3 |
| Conditions | Oil Intrusion |
11 Replies Received
11 Replies Received
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