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  1. The only thing that stopping me from installing the catch can is the warranty. If I keep it while visiting the dealer it will void my warranty, otherwise I have to take it out at every dealer visit.
  2. I saw a case of a 2008 Tahoe where the AFM was inactive for about two years with the car running about 155k miles due to sensor problem that causes the AFM to be disabled. Once he fixed the problem, AFM kicked back working again, but after that for a short period of time, lifters gone bad. Carbon deposit was building up for the whole time, and once the AFM worked agin they get stuck. My suggestions are, if you will disable AFM, then don’t return it back again. The other option, is to clean the engine regularly with flushing and probably (Seafoam/CRC) intake valves cleaner to maintain as much as possible of internal components so if you return AFM, hopefully it will not cause a problem. This is as well comes together with choosing good oil brand and change it regularly. This video is helpful to understand the importance of keeping the internal parts clean of GDI engines,, @ 8:05 he starts talking about carbon deposit that affects the valves and lifters at the same time.
  3. You’ll need the VIN number of the car that has the HMI before, if it is new, you have to add your VIN using GM software.
  4. Have you tried injectors cleaning products?
  5. Check and make sure that you are not towing more than ratings
  6. Here is the RPO codes list, check your glove box codes sticker as “CamGTP” have said. http://www.dstgateway.com/ACDelcoDocuments/rpoCodes.pdf I assume you should look for Z82 or Z85
  7. Oil leak is not related to AFM over ride, but regarding the ranger, I have heard that using V8 for a long time and then use AFM V8/V4 will cause lifters failure at some point after. Not sure why or if that was a coincidence, but it happened for a previous generation SUV of GM
  8. I remember that I saw this video recently. But to be honest, I didn’t understand some of the concepts, but I thought it may helps you.
  9. I saw a nearby neighbour have got 285/60 R18 on his Z71 Tahoe and they look sick and perfect for the Z71
  10. 24 Gallon for Tahoe/Yukon 28 Gallon for Suburban/Yukon XL
  11. I am sharing the same concern, tried before (softly) to take out the gold colour but with no luck. I am thinking to polish it using Dremel. So far both bowties replaced black, and lately steering bowtie https://www.tahoeyukonforum.com/threads/what-did-you-do-to-your-15-k2xx-tahoe-yukon-today.61418/page-213#post-1396221
  12. No specific code number that I could find, but the finishing called (Powder Coat Hyper Dark) Might help
  13. I have no experience on that, but recently I saw a video of Tahoe doing those setups. Engine is similar 5.3L so it might be helpful to you
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