greyjimmy
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Question on AFM collapsed lifter failure
greyjimmy replied to Doublebase's topic in Engines & Drivetrain
That mileage is incredible. My 2015 gets an average of 17 mpg. Rarely gets over 21 even on the highway. Has there been a significant change in three years? I bought it two months ago with 60,000 miles and at 62,000 the #7 cylinder lifters collapsed. Dealership was great though, towed it and turned it around in three days. -
Thank you for the info. I hope more will post there regarding their lifter issues. I am curious as to whether muliple lifters go out or if it tends to be #7 and thats it. Ive got 34,000 miles on my warranty so I hope the others fail now if they are going to at all.
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Dealership did as they said they would do and the truck is back to normal. Covered by warranty and turned around in three days. Runs like a top again.
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I heard from the dealership today. To recap, My 2015 Sierra 5.3 just had the same thing happen. 62,000 miles. It occurred as I was merging into traffic from a stop to at about 25 mph. It suddenly stuttered then check engine light came on and the traction control light on the dash. I pulled over and could hear the lifter knocking. It threw a P0300 and P0307 code. I had it towed to the dealer, it's lifter #7. It will be covered by warranty. They will replace the lifters on that bank but not the other side. I will have to pay for that myself. They are going to check the camshaft for pitting as well. I've only had the truck for 6 weeks so I don't know it's history as I bought it from the dealer andmost of it's service was done elsewhere. I'll post the progress.
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Yes thank goodness.
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Thats a good question. My 2015 Sierra with 62000 miles just went into limp mode and the engine definitely sounds like a lifter is sticking. I towed it to the dealership, we'll see what they have to say.
