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  1. N

    Sounds Like Lifter Tick but Rockers All Moving

    I’ll check the manifold. As for the harness, I replaced it with a new one… it’s a small piece, part 12707877
  2. N

    Sounds Like Lifter Tick but Rockers All Moving

    What tune did you go with? And did you go with the stock non-AFM cam?
  3. N

    Sounds Like Lifter Tick but Rockers All Moving

    Thanks for all the suggestions. I definitely have some more research ahead of me. I’ve looked at the DOD delete options but unfortunately live in CA and it’s a bit uncertain around whether passing smog is doable. For the NOID test, that would tell me that the injector is getting the right...
  4. N

    Sounds Like Lifter Tick but Rockers All Moving

    Thank you, I will take a look at that video. Yes, has AFM/DOD
  5. N

    Sounds Like Lifter Tick but Rockers All Moving

    2017 GMC Yukon 5.3L with 72k miles developed a tick very recently, noticeable sluggish performance but no check engine light. As I researched I discovered the dreaded collapsed lifter issue, read a lot, watched lots of videos and have my parts list compiled to get everything ordered. A couple...
  6. N

    <3k miles - 3rd time back for service. Seeking thoughts.

    Nope... check engine light with P0463 code showed back up on Sunday 10/8... I'm working towards buyback but the GM process reminds me of the mortgage underwriting process... between the case worker, service dept mgr, DM of aftersales it's a big game of telephone, document submission, review and...
  7. N

    <3k miles - 3rd time back for service. Seeking thoughts.

    Well the truck spent the week at the service department (dropped off Monday, picked up Friday)... swathdiver you were pretty dead on. Their experienced tech (40+ yrs per the Service Manager) was tasked with tracking down the cause of "excessive voltage drop" that was identified at the fuel level...
  8. N

    <3k miles - 3rd time back for service. Seeking thoughts.

    Thanks for all the feedback. It's going back in on Monday, we'll see how that goes.
  9. N

    <3k miles - 3rd time back for service. Seeking thoughts.

    Newbie here, love all the helpful posts and DIY posts on this forum. I'm looking for feedback on what I should do next and at what point to start thinking buyback... it seems like the service department doesn't know what is going on. We've got a new 2017 Yukon SLT 4x4, it'll be back in for...

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