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  1. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    I did something I normally don't do - I hired a mechanic. Changed the oil pump o ring in the Tahoe for me. Also did lower ball joints in one truck, passenger ball joints in another truck. They'll be coming back to do driver ball joints and swap axles in my primary work truck from 3.73 to 4.10...
  2. Alex_M

    1k RPM clatter

    How many miles on it? Edit - just saw the mileage. Over 200k is around when this seems to often start happening. The knocking at start up is most likely oil pump o ring. Takes it a minute to get primed after it drains off over night. The low rpm clatter I've heard attributed to piston slap...
  3. Alex_M

    Removing Body from Frame Checklist

    Wiring harness at the firewall Undo the brake booster from the firewall Spare tire shouldn't matter I believe? Same for bumpers.
  4. Alex_M

    Lowering kit delete 05 yukon

    My mind is blown. Sure enough RockAuto has lower control arms for coil spring front suspension in an 04 Sierra. Never seen a gmt800 with coils. Very neat.
  5. Alex_M

    DOD Delete Theory

    Please link - lot of folks have been through this thread already that have obviously never seen it, myself included.
  6. Alex_M

    First Overland / Camping Trip HUGE Success!

    We do a fair amount of wheeling. The Land Rover gets used for the more hard core stuff, but if we're camping also then the Tahoe is 100% the way to go. Nice to just drive it places as well. The Rover gets trailered any more.
  7. Alex_M

    DOD Delete Theory

    Oh, duh. I was thinking it only shut down the intake valves for some reason. Long time since I had a DOD motor open.
  8. Alex_M

    DOD Delete Theory

    Only 4 custom length push rods, right? Because only 4 cylinders shut down until you get into the LT motors.
  9. Alex_M

    Why is it so impossible to get a gas tank

    Look into bulkhead fittings. May need a tube or a check valve on the inside to keep fuel from coming out, but I'd be willing to bed you could plastic weld the old fitting shut and put a bulkhead fitting back beside it. Doubt either mechanic is willing to do that - that would be an at home job...
  10. Alex_M

    DOD Delete Theory

    OP, I am excited for the outcome on this. I'm with you - I don't see why it wouldn't work. Lots of folks seem concerned about the ticking lifter having caused damage to the cam, but I doubt that would be the case. Lots of hydraulic lifters out there with ticks that are not wiping their cams...
  11. Alex_M

    Headers on 2001 2500

    The 1500 Silverado headers will fit the 2500 Suburban chassis. There are just too many options for them to list all of them in their listing.
  12. Alex_M

    catalytic function not clearing (should I do more parts cannon)

    Just a PSA to everyone reading - do NOT use eBay injectors even if they are labeled AC Delco and come in the Delco box. Chinese fakes in Delco boxes cost me a motor last year. Stuck open and hydraulic'd the motor on restart, bent a rod.
  13. Alex_M

    4wd to 2wd

    Over the summer I did this on an off roading trip after breaking a CV on my Land Rover. I wheeled the rest of the day anyway and the hub did end up separating enough you could see a very noticable lean to the tire when I pulled it on the trailer. When I replaced the hub it has separated more...
  14. Alex_M

    Suspension Uogrades: Leveling Kits vs Lift Kits

    There's nothing wrong with a leveling kit inherently as long as it's installed well. At 3", you probably want 2" shock extensions which can be had for about $20 on ebay. Did you have a front end alignment done after the 3" keys were installed? Not all alignment shops are created equal. This is...
  15. Alex_M

    Partial List of Front Torsion Bars

    Pulled a set out of a 99-02 Z71 Silverado once - don't recall the number or exactly which year, may still have them. They were the same number and not marked differently for LH and RH.
  16. Alex_M

    Tahoe TBSS Intake manifold swap

    You will need the TBSS fuel rails. Reuse your existing injectors, they fit fine with the TBSS intake and fuel rail Get the Corvette fuel filter to regulate the pressure. This will make your firewall clearance a bit tight for fuel lines, but it works. You'll have to bend the fuel rail inlet up...
  17. Alex_M

    GMT800 Coolant hose "Y" connector

    I run green in everything just for the simplicity of only stocking one thing on the shelf. Won't hurt a thing.
  18. Alex_M

    New from SWVA

    Welcome from SWVA! Always fun seeing local folks online.
  19. Alex_M

    Why don’t my batteries last !!!!

    There are much fewer battery manufacturers out there than there are battery companies - most batteries come from only 2 or 3 manufacturers. I used to buy more expensive batteries, but found it makes little if any difference in most cases. Interstate is one that may genuinely be good - I just...
  20. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Depends on a few factors. Tire size, aggressiveness, driving conditions, opinion. I generally do at every oil change. I change my oil every 5k miles whether synthetic or dinosaur. I have had big aggressive mud tires that wanted more frequent than that, but generally 5k is a pretty good spot...
  21. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Yes, I've seen that. I'm not too concerned about off the shelf performance parts. More about towing power. 300 lb/ft at 800rpm and 500 lb/ft around 3000, the 8.1 in stock form will be miles ahead. If I ever want more performance I'll have Oregon cam do a custom grind and I'll port the heads...
  22. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Found an 8.1 complete with harness, ecm, and engine stand for $600. Going to pull it apart. Valve job, bearings, probably rings. This will be my 6.0 replacement.
  23. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Probably salvageable, but if I've got to pull the heads anyway I'm going to just pull the motor. I've been having some issues with the self adjusting clutch anyway, so we'll get two birds stoned at once, and it will give me good access to really check everything over and decide if I want to...
  24. Alex_M

    What did you do to your NBS GMT800 Tahoe/Yukon Today?

    Broken PAC-1218 in my fresh rebuilt 6.0 I installed over the summer. Has about 9k miles on it. Time to go Cummins or Big Block.
  25. Alex_M

    Upgrading Headlights and Fog/Running Lights

    On your Yukon I would go for the factory Denali headlights. Looks like the TYC's on RockAuto are about $60/ea plus shipping. The lower assembly is just running lights and turn signals. Replacing those won't do anything for light output, but if they are discolored you can get a fresh set on...

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