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Greetings. This is my first post here. I have a 2017 Sierra SLT Crew Cab 4x4 with the 5.3l L83 V8 engine. I bought the vehicle with 52k miles. Issues I had thus far: Replaced fuel injector and fuel lines at 65k miles. Vacuum pump for brake booster was replaced under recall at 69k miles.
At 73k miles, my engine has a very loud tick and the check engine light came on. Called Onstar for a over air diagnostic which came back with a PN0324 code which indicates timing and possible misfire issues. I immediately got the truck to my local dealership. Diagnosis is broken lifters which is covered by my extended powertrain warranty. I asked if the lifters were the AFM cylinders and was told yes. I hope the camshaft is ok. I am going to check out the damage and see what way forward will be.
Anyone else have these issues?
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