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  1. S

    Dealer not honoring warranty work..2018 5.3 Yukon issues

    It could be, however according to the Hendrick GMC dealer they were told not to do engine mount replacements anymore as it is an expensive temporary fix. @Bob2C had rough idle come back after engine mount replacement but I think finally his issue resolved itself somehow (which is a terrific...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Thank you, @swathdiver 1) It takes that long to heat up? How about a remote start, is the engine to temp at the end of ten minutes of idling? [ Good point, I know it is not correlated probably but somehow I am noticing that misses are more obvious after real driving, e.g. especially after...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Asking for more advice if possible. I spent 8 days just driving and trying to document how to re-create the problem. If anyone has any additional thoughts based on the steps described below, please let me know. GM finally called back saying that they will take another look at my case (it only...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    I decided to postpone running cat idle measurements as I still have that BG Platinum in the fuel. I know it is snake oil indeed but I am desperate to try about anything as my wife is about to send me to the couch for buying this masterpiece truck for that much money. Another question when...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Looks like my link did not work for what they are trying to do https://www.gm-trucks.com/forums/topic/184906-crc-gdi-valve-cleaner-spray/#comments
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    I am trying to fix the issues on my own. @Bob2C had some success with his truck and CRC GDI cleaner. I found a thread on the gm-trucks and they recommend using this line here: https://www.gm-trucks.com/forums/uploads/monthly_03_2016/post-129450-0-16852400-1458543187.jpg Any advice from anyone...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Oh, if 700 F I have never seen this temp when engine is running. I will warm it up and let it idle for 15-20 mins tomorrow. Thank you.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Just to make sure we are talking about 700 degrees Celsius or Fahrenheit when they are in idle? I did not wait for 20 mins to measure them but when I drive on the even flat surface they are in 1300-1480 F (705-770 degrees Celsius). I will let them idle for 15-20 mins and measure. I found a...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    It says EPA LDT 3, California ULEV 125. Something like that.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Brent, you advice is truly invaluable! Thank you. This is what I would do from now on - record on my cell, I cannot believe how many times they ignore what I say. Just to make things interesting I called Charles Boyd GMC this afternoon and asked to add cats complaint to the work order, he said...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Brent, thank you for pointing it out. I have provided Charles Boyd GMC with detailed problem write up (see below) including cats running high, got home last night and cats running hot complaint was conveniently left out from the work order when truck was returned to my wife. Call me crazy, but...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Thank you so much, apparently shortage of these plugs everywhere. Out of stock at most reputable retailers.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    James, it smoothes out but not completely, even in N or P I still feel "misses" but side-to-side shaking is gone just a faint feel of a miss. Interestingly enough even after full tank of Exxon, absolutely no change. I will try to replace the plugs and wires. What iridium plugs come correctly...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    I am reading that getting fuel rail is nearly impossible without special tools, I cannot find the good instructions but YouTube mechanics are saying it is HARD... I can wrench and do it with precision, as long as it does not require specialized tools that cost hundreds...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    My wife agrees with you :) I promised her to try 4 things because she is mad at me for putting her into a time machine and transporting her into 1988 Yugo experience of a shaking car :) : 1) Mobil/Exxon gas (so far I am through the full tank but no change yet). 2) I will replace spark plugs and...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    I have called 6 local emission stations and all of them said that an only way to test emissions in NC now is via OBD II, probed machines are banned in NC as the last shop explained to me. I guess that is not an option any more for me either.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Another 4 hours to see a dealer #3. I have to admit my truck is "normal" three dealers took a look at the truck and told me until there is a code, GM will not authorize a repair and they will not touch the vehicle. Misfires in S06 monitor means nothing to GM. Cats running at 760+ Celsius is...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    @BG1988 Truck is 9,080 miles only. My cat is running between 1300-1420F which is 700-760 Celsius. I will need to find a good smog shop in town, not sure how, but I will call them asking about probed smog test.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    While your point is rational, it is easier said than done, we saved up as a family for 3 years to buy our first "premium" vehicle - this Yukon, we are raising 4 boys, money matters. If I am to trade it in I would loose close to $10K after owning it just for 3 months, who knew that GM vehicles...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    These are not theories and there is no conspiracy, it is a proven and documented fact according to North Carolina Consumer Council, and NCCC are not known to be liars or cheats... https://www.ncconsumer.org/news-articles-eg/should-carfax-reports-always-be-trusted.html *****From their...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Burnt bridges, not willing to work with the dealer or dealers... what one needs to do? I patiently took the vehicle to dealers three times, just asking them please do troubleshoot, the problem is there, I described the problem on 4 pages as they wanted precise details, I rented cars out of my...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Thank you, yes, definitely last resort but so far none of the dealers played it honestly and fair with me either. Trying one more dealer this week.
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Thank you, sorry but can you please elaborate a bit more on the dealer's bond. I am not familiar with the process. Appreciate it!
  24. S

    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Fully agree, mine is +/- 500. I am being told by dealer, they will not increase RPM, GM will not allow. Tuners can but the same performance shop has explained that there is a mark created during any flash. Blackbear guys confirming in my this thread that they do a lot to avoid marks and no...
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    Dealer not honoring warranty work..2018 5.3 Yukon issues

    Thank you everyone for all the help! Much appreciated, if it was not for support from this forum, my kids college would be delayed as I will be still paying off trade-in vehicle :) I have problem with my knee and cannot stand on knees for a long time to change spark plugs, but I will check...

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