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  1. sumo

    Yukon 07 - manual air control - no front air

    Check for loose pins on connector or burnt harness. You’ll be able to see at the connector if it’s burnt
  2. sumo

    FS: 2007(NNBS) Yukon Denali Rotors and Calipers

    Great upgrade for the NBS guys
  3. sumo

    AWD vs 4WD

    How’s your tire tread? If one side has considerable tread compared to the other, side to side or front to rear can cause binding in the drive train. Tires with smaller tread will spin faster than a tire with more tread.
  4. sumo

    Bunch of electronics stopped working. Where to even begin!?

    Well the sounds, are played through the speakers. Did you reinstall the old radio? It’s possible you may have not reconnected the harness connector properly or may have left a ground off. You’re going to have to retrace what you did.
  5. sumo

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    In the process of rebuilding my rear end. Bought a boneyard rear end few months ago. Recently it started making a train noise when off the gas. Somehow the right rear clip broke or came loose, who knows how it happened or if someone been in there before.
  6. sumo

    04 Denali, long cranking before starting

    Yea have fuel pressure checked.
  7. sumo

    Recommendation on portable toolbox/chest

    Toolboxes have wheels for a reason
  8. sumo

    Recommendation on portable toolbox/chest

    Whatever you can fit in your ride
  9. sumo

    Airlift Installation Pics

    I don’t have a pic but I installed the air fitting by my trailer hitch. Drilled a small hole on the left side of the bumper and it’s hidden when I have my hitch cover instslled
  10. sumo

    Texas Speed vs Speed Engineering headers

  11. sumo

    16 volts charging 2004 Tahoe LT 5.3L flex fuel

    Your charging system is computer controlled. It looks at the battery soc state of charge, air temp, input commands like headlights, tow/haul mode and determine the output of the alternator. It can charge 15.5 but may jump up to 16v but should not be a constant 15.5+. How’s your battery? If...
  12. sumo

    Texas Speed vs Speed Engineering headers

    Post it here and I’ll do the same so people can get a idea of sound
  13. sumo

    Texas Speed vs Speed Engineering headers

    Honestly I think you’ll be fine. But things will differ will be sound, fit/installation and quality. I never heard of installing headers that make it worse than oem
  14. sumo

    Texas Speed vs Speed Engineering headers

    That’s pretry much what I did
  15. sumo

    Did I just get ripped off?

    You have a copy of the RO? It should break down the cost of Parts, labor, material and hazard waste of any
  16. sumo

    Texas Speed vs Speed Engineering headers

    American Racing. These are absolutely beastly. The sound it gives my truck and believe it or not, I am running oem piping cat back system. I did the resonator delete, welded in a magnaflow muffler. I run their 1 7/8 header with a catted y section, but honestly, it looks like a bump in the...
  17. sumo

    07 Tahoe - Various Issues

    It’s kinda vague. Squeak or click I’d tend to think belt, but you said you done that, maybe a tensioner? It be better help if you could post the codes related to you failure lights. As for Tpms, is it a low tire light or actual failure?
  18. sumo

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Who knows. I bought it complete. I only opened the cover to swap my diff cover over. Only did a visual to make sure there were no chipped or broken gears. It had the bolt when I spun it around but I guess I should of checked the torque.
  19. sumo

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Junk yard rear end I put in started making noise on when off the gas. Sounded like a train. Turns out the c clip on the right axle somehow came off and sheared the end of where the clip holds it in place. The only thing holding my axle in was the caliper. Time to do a rebuild. It’s the...
  20. sumo

    Engine and or Suspension problems

    I’d say have your motor mounts checked. Worn or broken mounts will give you the symptoms you described. Espically at idle and changes between 8 and 4 mode.
  21. sumo

    Opening rear hatch when battery is completely dead?

    Unless there an access cover on the rear panel so you can access the latch, I don’t think so. You could however put a portable jump pack on the terminals and operate it that way
  22. sumo

    LED headlights bulbs kill DRL

    That’s becuase of voltage spikes that can reach above 14v. Not many bulbs can handle that much and that explains why you see a lot of GM with one drl out. Since leds require less power to run, it won’t take much to overload them either
  23. sumo

    Control Arms and Ball joints

    I did moog lower ball joints for one main reason. They are greaseable.
  24. sumo

    Any Good Headers for Newer Model Tahoes?

    http://store.blackbearperformance.com/American-Racing-Headers--1999-2007-Classic-GM-TruckSUV-48L53L60L_p_1257.html
  25. sumo

    A/C Blowing Warm in Town

    As long as There’s charge in the system for the pressure switch to see, it will still allow the compressor to engage. Definitely your description sounds like a undercharged issue. What you could do is have the system evacuated and recharged with dye. Once it starts blowing warm again, you can...

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