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  1. THarber

    Throttle Body Upgrade ?

    You're not going to gain anything by upsizing the TB. Your engine is tuned and designed to only take so much fuel and so much air. You will open up a whole new set of problems by doing so. Larger TB are great for performance cars or trucks running in the upper RPM range and thats about it...
  2. THarber

    15 Smoke/Rough Idle/Oil on spark plugs/Possibly loosing coolant. opinions?

    Antifreeze will evaporate and it is not out of the rhelm of possibilites that you might have some passing by a head gasket. Nothing that I would worry about and its more common than people think. As long as when youi open the oil fill cap, its not white from contamination, you're good.
  3. THarber

    15 Smoke/Rough Idle/Oil on spark plugs/Possibly loosing coolant. opinions?

    Your plugs are fine. Oil around the threads means nothing. If it were burning oil, the tips would have oil. Those look like a light ash color which is perfect. You migh consider adding a catch can to the engine to help with total oil consumption. Your coolant really doesnt show anything...
  4. THarber

    HPtuners recommendation

    I no longer use my HP Tuners but in order to get even a mail order tune you will need to buy the software and connection device as well as the licenses. At that point you can go onto the HP tuners website and leard how to do those basic functions yourself. I found HP Tuners to be overwhelming...
  5. THarber

    Rear door handle replacement - passive lock - 2016 Yukon

    No way that harness is long enough. I just had mine on and off yesturday. TH
  6. THarber

    Help me choose a cat-back!

    How do you like the MBRP a week later?
  7. THarber

    Flashing a tune accessory or service mode?

    The tune I installed inmine required several cycels of on/off acc. Not sure what yours requires but I never had a problem of mine timing out at all.
  8. THarber

    Radio is not showing Xm presets

    I figured it out thank you all. I had to swipe the presets left to get XM back.
  9. THarber

    Radio is not showing Xm presets

    2019 Yukion, somehow I have lost the preset channels while listening to XM. I can change channels on the steering wheel and remain on XM but the buttons on the screen are all FM and will take you to FM when pressed. What am I missing here? TH
  10. THarber

    Whipple vs LSA pros and cons

    LSA kits are more expensive than WHipple kits, unless you piece it together. I'd get the whipple with the tune and let the smiles begin. The whipple is superior to the LSA in every way. The new 5.0 whipple has some draw backs for your application and is probably too much to begin with.
  11. THarber

    Brake bleeding - need sanity check

    As someone mentioned, do a slow bleed. Open all 4 bleeders and let gravity do the work for you. Keep an eye on it so as to not run out of fluid again. I had to do the same thing on my H2. Run 4 lines to 4 containers and watch. Also, if you do a regular bleed, make sure the truck is rinning...
  12. THarber

    9 miles per gallon!!

    Did all of your previous trucks have a 5.3?
  13. THarber

    Fuel grade

    No everytime the knock sensor records a knock, it will cause the ecm to retard the timing, that's pulling timing. It will continue to do so until the knock is gone. WHen you pull 15 degrees or more of advance out of these trucks, you might as well tie a boat anchor to the back of them. These...
  14. THarber

    Fuel grade

    How do you think it is accomodating the lower octane fuel in the table? It is pulling timing. Spark knock is very real and yes I have looked at this on HP Tuners. My truck will run as much as 42 degreees advanced with the right tune and premium fuel. Low octane will drop it into the teens if...
  15. THarber

    Fuel grade

    All of these engines can run on 87 but if you could see how much timing the ECM pulls out to do so you would be amazed. WHen you are pulling 25 degrees or more of timing to accomodate cheap fuel you are defeating what the engine is supposed to do in the first place. Fuel helps cool and...
  16. THarber

    Grade of oil

    I have always ran 5w-30 in my GM engines and in the heat of a Florida summer I use 1qt of 5w-40. I change my oil religioulsy and prefer to use Royal Purple with Baldwin oil filters. I have never had any issues from my H2 to Vette to Yukon. I also run 5x-30 in my twin turbo imports and have...
  17. THarber

    I Got the Shimmy Shake

    Checks the hubs.
  18. THarber

    WTB drivers side rear door

    Scammer that posted his frined had one was indeed a scammer. They gor me for @250 and tried for more.
  19. THarber

    2017 Tahoe engine swap, advice appreciated

    Thats an easy weekend job to pull heads and repalce lifters and pushrods. Don't buy into the new engine BS. If it were mine, I'd pull heads and see what you really have before even considering a new engine. If could be as simple as a loose rocker arm.
  20. THarber

    2016 Yukon Denali - I am getting double vision ghosting in my windshield. Normal?

    How long have you had the truck? If not since new then someone could have put an off brand tint or non optical quality tint on the windshield that is effecting the view.
  21. THarber

    WTB drivers side rear door

    2019 Yukon SLT drivers side rear door.
  22. THarber

    WTB drivers side rear door

    Step son backed his car into my truck. I need the drivers side rear passenger door. Black would be awesome but I can get it painted. I do not need the window or door panel but I will take what I can get. Thanks
  23. THarber

    Anyone with Maxtrac 2" rear leveling kit installed?

    I think its an optical illusion. If you look at the bottom of the truck, not the top, it should be level. I thought the same things.
  24. THarber

    Sick 6L80 Transmission - P0700 & B2AAA, P0741 & B2AAA - Resolved $$$

    Are you able to do the install yourself? If so I would suggest you go direct to GM and buy a new one with torque converter. You're only looking at a few bucks more. I have had way too many issues with remaned transmissions and it boiled down to those companies and churning out product as...
  25. THarber

    Anyone with Maxtrac 2" rear leveling kit installed?

    I had no issues with mine at all. Ride is nice it sits perfect. It was a quick install too.

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