Jump to content

BAD lifter tick '15 sierra 6.2

crushNchowda

By crushNchowda
in Troubleshooting & Recalls

Recommended Posts

crushNchowda Senior Enthusiast

crushNchowda

Posted
Posted

Just dropped my 2015 sierra 4x4 6.2 off @ dealer due to a loud ticking racket coming from the engine, which I am nearly 100% certain is a bad AFM lifter (service mgr says hes seen rockers go also) - truck only has 48k on it. Will be covered under warranty...but makes me even less inclined to stick w/ GM since if I had a '16+ truck this would be outta warranty & IMO the AFM is just like playing Russian roulette - not a question of IF something breaks - its WHEN, & I imagine that's the reason for the amended powertrain warranty by GM.

 

Got a loaner Terrain hopefully get put back in a truck tomorrow, but I've had 3 new gen trucks - a '14 I swapped after 5500  miles since it was a 5.3 optioned w/ 3.08 rear end  - couldn't stand the gutless acceleration off the line or constant shifting in mountainous roads, then I had '14 5.3 All terrain w/ 3.42's that was mostly trouble free except it suffered from the shaking issue & the dealer techs & outside GM engineer couldn't figure a fix  - that truck I totaled in an accident - worth noting the airbags didn't deploy on the initial collision that tore a wheel off & caved in the right fender @ 40mph, nope didn't deploy until truck struck a 2nd object (tree) & came to a stop @ 15 mph - food for thought.

 

 

This '15 6.2 has already been in for a leaking 3rd brake light that damaged roof liner, AND a failed starter that left me stranded on a road trip.

 

I used to stick up for GM.....no longer. I love my '03 corvette Z06, the interior isn't great, panel gaps aren't perfect, the factory paint leaves something to be desired, but as far as all the mechanical stuff that counts? GM was NAILING it back then - there's no comparison between the quality in that car vs. my near $60k 2015 truck.

 

Sad.

 

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • Matt Parker
      Clunk when putting truck into drive and reverse.

      By Matt Parker · Posted

      I have a 2000 Silverado 1500 LS, whenever I put it into reverse and also in drive it clunks, the truck also feels sluggish when driving. Any advice/ideas ?
    • richard wysong
      Needing this part.

      By richard wysong · Posted

      Looks like it's riveted to me. What is wrong with that 1? Welcome to the Forum!
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Missing pieces of the Assembly   Detergency vs Solvency   Not the same thing. Detergency is the mechanism that surrounds solid particulates preventing amalgamation. Usually accompanied by a Dispersant whose job it is to keep those encapsulated particles in Suspension. Solvency keeps things that can be dissolved in solution.    Salt is a solid that can be dissolved. Pepper is a solid that cannot be dissolved. A detergent/dispersant is effective on pepper but a solvent is more effective on salt. As long as the solids remain in either state, dissolved or dispersed then they can be be removed with the oil upon change.    How many wranglers does it take to herd cats? Depends on how many cats your herding. How much sponge does it take to soak up water? How much water is there to soak up? Point is most oil blends start with some herding ability and next to zero sponge and recently even fewer wranglers are being sent to do the same job.    So you start with a dozen cowboys and zero cows but at the drive progresses you pick up cows along the way, but not cowboys. At some point you have more cows that the wranglers can handle and some leave the herd. Deposits. And the API has an acceptable number of cows they are willing to let loose. In the ideal world zero is the right number for he rancher but to the butcher....a few lost is fine. This cow is beat to death. Let's move on....   Solvency isn't something oils on the Walmart shelf care about AT ALL. Problem is, you motor does. Fuels driven varnish sticks rings and only a solvent can keep them in check. The bet is that the solids driven portion that plug the expander rings and the oil drain backs and VVT screens and AFM screens will be an issue long before varnish is. Not that it wont be but if they market well enough the consumer can be kept ignorant enough to either believe it is "normal" (A quart in 1 or 2K is normal) OR is kept at bay longer than the first owner is likely to hang on to the unit. Solvency cost money.    Now the OEM's have John Q. Public buffaloed into the belief that the number cows accumulated along the trail is a known and predictable CONSTANT. It isn't. Nor is the rate at which they crossed paths with them. Only the number of wrangles is constant. Or was. Each new generation of oil sees fewer and fewer of them.    So what happens when the number of cowboys is lower (lower TBN) with each seasons trail but the trial is longer (OCI) and the number of cows along that trail continues increase? (Conditions that promote deposits).    For awhile the blenders were on to something. Better bases are harder to degrade (fewer cows) but that was overtaken by a longer trail (OCI) and improved breeding (More cows) while continuing to reduce the cowboy staffing levels (TBN/Aniline #).    Marketing has been successful. We've fired most of the staff, cows breed line bunnies, the trail is ten times longer and we've convinced the boss his ranch is in better shape that it ever was.    That kids is just the cleaning side. The side few pay attention to.     
    • davester
      Needing this part.

      By davester · Posted

      hit a junkyard.
    • Z45
      PF63 Oil Filters Going Away?

      By Z45 · Posted

      Mann+Hummel since 1941 per their web site 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...