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  1. mikeyss

    Trans tune question

    Good morning/afternoon. I have 2 questions about how you tube for the torque converter lockup for the 6L80's. What I'm wondering is if lockup is 100% or if it is left like the factory where it's allowed to slip more. Also, what gears does lockup occur with your tune?
  2. mikeyss

    Weird!!

    I was looking at wrecked trucks and found that the 2019 new style Silverado has 3 cooling fans! Not sure why GM went this way...
  3. mikeyss

    Hope all is well

    I hope everyone is doing well at Blackbear
  4. mikeyss

    Mikeyss Build Thread

    Welcome!!! The time has come to begin a build thread. I am 3 years over due for a build thread, but after recent events...it's time. I will try and keep the last 3 years in order, and I'll tell you what's coming soon. I have a 09 Tahoe LTZ with a 6.2 L9H. This is the day I bought it Here...
  5. mikeyss

    Texas Speed

    Has anyone had trouble with the Texas Speed website. There is an option to plug in your VIN #, but when I do mine, it says it's invalid. So skipping that, I just put in my model year (09) and that it's a Tahoe. Now every product I look up is either for a 4.8 or a 5.3. I have a 6.2 so nothing...
  6. mikeyss

    Oil

    I was wondering if anyone has tried the Rotella for gas engines yet? I am almost due for an oil change and have been using Mobil 1 synthetic since I bought my Tahoe 3 years ago. One time I changed to the high mileage and it seemed my L9H ate that stuff. It was the only time I ever had to add...
  7. mikeyss

    Exhaust Question

    Does anyone with an Escalade, Yukon, or Tahoe have dual 3" exhaust tailpipes running over the rear axle to the rear bumper? I know it's tight going over the axle and the trucks do have kits for 3" tailpipes, but I haven't seen any for SUV's. I ask because I plan to get rid of my 3.5" stock...
  8. mikeyss

    Found this!!

    I found an 07 2500 suburban in bermuda blue for sale around me!! This has to be a rare ass one because of the color. It's too bad it's still a 4L80, but its still cool and someone should buy it!! https://www.apautobrokers.com/details/used-2007-chevrolet-suburban/61523641
  9. mikeyss

    Adding a vehicle

    I was wondering how to go about tuning an additional vehicle since I bought an autocal and tune for my 09 Tahoe from you. I recently bought an 06 Sierra Denali and wondered if that could be tuned through the same autocal. I understand that there is cost involved, just curious how to proceed...
  10. mikeyss

    Driveshaft

    My 09 Tahoe needs rear u joints. I would like to replace the driveshaft with an aluminum one. However, I don't know where to look for one, and I'm not sure if mine is different from other Tahoe's. Since mine has the L9H, it has the AXN 9.5" axle. I don't know if my driveshaft is any longer or...
  11. mikeyss

    6.2 Yukon XL Non Denali for sale

    I never knew these existed! A 2010 Yukon SLT with an L9H. First, I thought after 09 the L9H was only in trucks, and SUV got the L94. Second, the SLT had the 6.2 option is news to me, lol. This one is weirdly optioned too.. a/c and heated seats, but no center dash speaker...
  12. mikeyss

    Piston slap

    My 09 L9H has always had the 'normal' piston slap noise that goes away when warmed up. However, as of the last few months, even after it's warmed up, I can still faintly hear it. Oil pressure is good, 25-30psi at idle, and 38-42psi while driving. It seems around 2k RPM is when I hear it...
  13. mikeyss

    Front axle shafts

    My 09 Tahoe has a pop type noise while doing sharp parking lot manuevers. I put it up in the air and the front axle shafts have side to side play and make noise, especially the right side. My question: do I get them rebuilt for $99 each with a day or 2 downtime... Or get the A/C Delco...
  14. mikeyss

    Slight hum at 60mph

    I do a lot of city driving so I don't get up past 45mph too often. The other day I was on the highway and noticed a slight hum coming from the rear at 60mph while hitting the gas pedal. It seems from 57-63mph the whine is there, when I let off the gas the whine stops, or it stops after 65mph...
  15. mikeyss

    Found a real rare Tahoe on cars.com

    Found an 08 LTZ Tahoe 6.2, it was a late option in 08 and was only available in RWD. These are even rarer than the 09 6.2 Tahoe's which came with 4X4. Someone should buy it!!! https://www.sittongm.com/VehicleDetails/used-2008-Chevrolet-Tahoe-2WD_4dr_1500_LTZ-Greenville-SC/3276504813#close
  16. mikeyss

    2007-2013 gmt-900 quick struts SOLD

    I bought a set of Napa quick struts for the front of my 09 Tahoe. I messed up and blew up one of my electronic front struts on a Saturday and needed to be able to drive the Tahoe home. Since it was impossible to get a replacement electronic strut on a Saturday, I got the quick struts. I drove...
  17. mikeyss

    Cooled Seat Question

    I got my 09 Tahoe LTZ last May. When remote starting it last spring/summer, the front cooled seats would turn on and the seats were nice and cool when I got in. All winter, when remote starting, the front seat heaters were on and warm when I got in. However..... Now that winter is over and...
  18. mikeyss

    Transmission Question

    Are all 6L80's built the same between the 5.3 and the 6.2? I remember in the 2000's the 4L60 was behind the 4.3, 4.8, and the 5.3, the 4L65 was behind the 6.0, and the TBSS had the 4L70. The 4L60 mated to the 4.3 had less clutch packs then the 4L60 mated to the 5.3. I wonder if there is any...
  19. mikeyss

    Sway Bars

    I know this subject is kinda asked a bunch, however there's really not a straight answer. I am shopping for better front and rear sway bars. I am keeping my Z55 suspension stock, and it's all going to be brand new next week. While I have the suspension apart, I want to replace the sway bars...
  20. mikeyss

    Rear Spring Question

    I am preparing to rebuild the suspension in my 09 Tahoe LTZ. I have about 140k on it and it's all original. I want to keep the Z55 suspension. I am getting most of everything from rockauto, and found there are 2 different rear springs I can get. The factory ones, or there is a heavier duty...
  21. mikeyss

    Front wheel Hub/Bearing

    My 09 Tahoe needs the LF wheel hub/bearing replaced. I used to work for a GM dealership a few years back and am out of the loop now on parts. I used to swear by OEM or Timken bearings. But that was on the old GMT800 platform. Since I've only had my GMT900 for about a year, I don't pretend to...
  22. mikeyss

    Just Ordered!!

    Just ordered an AutoCal for my 09 Tahoe 6.2. I can't wait to see what all this thing can do once all the nannies are reduced or eliminated!!
  23. mikeyss

    A review of my Black Bear Tune

    I am late in writing this, but here it goes. I have a 05 Tahoe with true duals and an airaid mit. I ordered one of their mail order tunes and got it quicker than expected, the install was easy, and the instructions for the security relearn were great. The tune is awesome, and it made it fun to...
  24. mikeyss

    I found my dream Tahoe

    It's an 09 LTZ with the rare L9H 6.2 option. It's has the part time 4X4 system that the other Tahoe's have, thankfully it's not the AWD systems the Denali and Escalade use. Has all the options, except power running boards, which is a good thing. I have an airaid intake tube on its way, and in...
  25. mikeyss

    2014 GMC Wheels Work

    I work for a GM dealership, and they decided to add a lift to a 2014 Sierra All Terrain Edition. They took off the stock wheels to put larger ones on. Since the stock wheels were just sitting there... I decided to see if they would fit my 05 Tahoe. They fit and look really good

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