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  1. R

    Vaccum hose?

    It is a vent. It is lower in case it has got to dump, such as when over heating.
  2. R

    2016 GMC Yukon

    This code is triggered when one or more modules on the CAN bus determine that the ABS module is sending out invalid data. The U0415 code can be caused by damaged wiring or poor connections, a bad ABS control module, or faulty ABS sensors.
  3. R

    "transmission hot idle engine" message alert setting

    That's way too hot. I would replace the transmission fluid thermostat with the updated one from a year or two back. It will keep your fluid well below 190 degrees. Temps that high will soon leave you on the side of the road. The fluid in my 2016 SLT never exceeds 180 degrees with the updated...
  4. R

    P0446 code on low mileage 2018 Tahoe

    The standard Federal emissions warranty is 8 years or 80,000 miles and California emission standards are longer. This would be covered under emissions warranty.
  5. R

    10L80 - filled transmission at wrong temp???

    You're fine. Even at the difference in temp the expansion would be negligible.
  6. R

    What’s wrong with my 2015 Tahoe?

    The code is for a bad coolant sensor or defective thermostat. That would account for the fans running on. The noise will need more info.
  7. R

    2016 Yukon XL SLT Transmission Temperature

    I have the new thermostat and a Mishimoto trans cooler and my temp never exceeds 160 degrees even in 115 degree Arizona summer. Not the cheapest cooler but by far the most solid plug and play custom I've seen. Before the thermostat change and cooler addition it was always at 194 - 210+.
  8. R

    Maintenance on a 2019 with 96K miles?

    There is no power steering fluid, but that being said, I see nothing else that I wouldn't do or have done at that mileage.
  9. R

    $79 bucks for an AFM disabler = drive better AND better gas mileage?

    Totally not true. I've had a Range disabler for 3 years and my truck is using all 6 gears. On cruise I can average around 23-24 MPG with no V4.
  10. R

    Anyone have experience with Endurance? Failed Lifter coverage

    These "extended warranties / insurance policies" are scams people get screwed by every day. The only policies to buy are from the vehicle manufacturers for that vehicle period. There is no such thing as an extended warranty that you pay for, only insurance policies. A warranty is free with the...
  11. R

    Grade of oil

    Any and all.
  12. R

    Maybe overthinking but I feel like my suburban runs too hot...

    The standard thermostat for your vehicle is 207 so your temp is not out of line.
  13. R

    Maybe overthinking but I feel like my suburban runs too hot...

    A scan tool is the best way to make sure your gauge is good, if good then water pump, thermostat or clogged coolant system would be the logical next choice. You've already changed the thermostat so I would be looking at a pump.
  14. R

    Maybe overthinking but I feel like my suburban runs too hot...

    Use a scan tool and see what temp the ECM is reading , gauges in these trucks can be way off. One other thing, you could have a bad water pump. But I would go the scan tool route first.
  15. R

    Learning this new rig.. Transmission "ticking" ?

    This is a three year old post.
  16. R

    Transmission Temp question on 2016

    I know there is an updated 6 speed trans fluid thermostat that lowers the fluid temp about 45 degrees, not sure with the 8 speed. My 2016 6 speed never gets higher than 165 ( previously was 204+) with the updated fluid thermostat
  17. R

    Fans run like the engine is overheating, coolant gauge reads no temperature, A/C disengaged.

    Default for a malfunctioning temp sensor is fans full on, just in case.
  18. R

    Transmission service, changing bypass thermal valve, part numbers?

    The 70 stamp stands for 70C = 158 degrees F. If that is not there it is not what you want.
  19. R

    Low oil? ‘14 Tahoe 166k

    I would put your vehicle on level ground and try again. The entire end of the stick should be covered between the lower and upper marks. Pull the stick first, wipe it clean and reinsert for a fresh dip. Your picture makes the oil appear blotchy on the stick.
  20. R

    Transmission service, changing bypass thermal valve, part numbers?

    86774933 is the only number I have seen and used, but that was over a year ago. Here is the TSB: https://static.nhtsa.gov/odi/tsbs/2021/MC-10207911-9999.pdf
  21. R

    Low oil? ‘14 Tahoe 166k

    Generally the oil is a solid consistency on the stick, I wouldn't consider that reading a good one. If you are indeed down a quart in 2K you really don't have a problem that anyone would consider bad with that many miles. At nine years old you don't have a car in the fight.
  22. R

    Oil change proof question...

    No such thing as a paid extended warranty, just insurance policies written to screw you over. Warranties are free. Insurance policies are made to keep money in the insurance co. pockets. If you want a service contract, purchase only a manufacturer backed policies, no third party contracts.

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