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3.0 Duramax Camshaft Drive Sprocket Replacement
2021 Yukon 3.0 Duramax with 30K on it. Check engine light came on so I took it into the dealer to diagnose. Turned out to be the exhaust camshaft drive sprocket had failed. Anyone else had this problem? They fixed under warranty but I'm concerned about the cause and possible downstream issues...- GmcJing
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- Replies: 12
- Forum: 3.0L Duramax Diesel Discussion
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Service Emission System 3.0 Duramax
Service Emissions System warning came on this morning at the start of a long trip. Figured it was a regen thing as the car had been only grocery getting for a bit. However, 2+ hours of driving later and it's not going away. Limping it to a dealer in Dallas now at 65mph, (soon to be 55mph) hoping...- GmcJing
- Thread
- Replies: 15
- Forum: 3.0L Duramax Diesel Discussion
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2021 Yukon XL 3.0 Fuel Fill Assembly
Wife filled up this morning and when she pulled the nozzle out the spring loaded fuel fill cap had come off and was sitting inside the fuel fill neck. It's impossible to pull it out through the filler neck. Contacted dealer, and the whole assembly needs to be replaced and the parts are a week...- GmcJing
- Thread
- Replies: 9
- Forum: 3.0L Duramax Diesel Discussion
