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  1. strutaeng

    Engine issues

    Well, start by replacing the fan clutch if it's not working...and go from there. Welding a washer/nut on the broken bolt works. I've done this before, but on engines that have been out of the vehicle or heads on workbench. You can remove the wheel plastic shield and tire and get a direct...
  2. strutaeng

    Stripped head bolt hole

    I was also wondering if the right angle drills would be of any help. Like the slower RPM used by electricians/plumbers for drilling holes between studs. They are high torque/low rpm. What kind of head bolts were you using? Did you clean the bolt holes? I took a few old head bolts and cut some...
  3. strutaeng

    If you didnt have a Yukon/Suburban/Escalade, what would be your next choice?

    Chevrolet Express 2500/3500 passenger van
  4. strutaeng

    Gear ratio question

    Says it's either 3.73 or 4.10. I didn't know they used those gears on the 2015-2020 trucks?
  5. strutaeng

    I want to convert the conventional steering to rack and pinion on an 01 GMC Yukon. Help please!

    It would help to tell us why you are thinking about doing this. I don't know the answer or if it's even possible, but maybe someone here knows. The early GMT800 2wd trucks have rack and pinion, 4x4 got gearbox. I'm pretty sure it's related to coil spring vs torsion bars suspension differences...
  6. strutaeng

    2001 Chevy Tahoe Wiring Harness

    Cool. Hopefully you can source a nice clean harness. The engine/transmission harness actually does not go into the cab or cluster. There's like 3-4 connectors at the fuseblock for the engine/transmission harness (4x4 models have an extra connector the T-case) and the other main connection is at...
  7. strutaeng

    2001 Chevy Tahoe Wiring Harness

    Understand. Most (if not all) of the connectors can be bought and replaced. I made this post a few months ago: https://www.tahoeyukonforum.com/threads/how-to-re-loom-your-ecu-engine-transmission-wiring-harnesses.143808/ I've since removed the engine for a rebuild. I replaced the coolant...
  8. strutaeng

    2001 Chevy Tahoe Wiring Harness

    Wrecking yard from a southern state? Just clean it up and install new loom.
  9. strutaeng

    TTY head bolts with engine in-vehicle

    A final update. Been daily driving the 'ol burban again. Everything seems A-okay. The cam low end torque is very nice. I like it! :) I've since racked up a little over 600 miles; a mix of city and highway, moderate throttle with a few WOT pulls on the steepest grades around here (not many...
  10. strutaeng

    L86 gen 5 lifter kit

    Love Like ...and LOL (we need an option to select multiple emojis!) Great job! That's awesome!
  11. strutaeng

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

    I'm a structural engineer and focus on existing buildings assessment, evaluations and repairs. This is a building they are renovating in Lubbock. A few months ago I looked at another building in Midland. Yes, everything out there is oil/gas. It's crazy business. My company has a separate...
  12. strutaeng

    01 Shutting off no crank, no start.

    The way the VATS works is: engine cranks and fires, but the ECU will kill both injector pulse, spark and fuel pressure instantaneously. It basically and dies immediately. Agree: that doesn't sound like your symptoms... In your situation, you may have more than one issue going on...
  13. strutaeng

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

    Coming back home I realized the AC wasn't working on my 99 Silverado (DFW to Lubbock for job visit.) Got home and checked fuses and relay and everything was good. I decided to check the belt and it had snapped. Doh! When I parked at the hotel the night before I do remember I heard a weird...
  14. strutaeng

    Epic Mexico Eclipse Road Trip

    Wow, that's awesome! GMT800 FTW!
  15. strutaeng

    1999 tahoe misfire on cylinder 8 after having new spider injector/pressure regulator replaced

    You would probably have 2 misfire codes if injectors were reversed, I think. I mean, any new part can be faulty even before you open the box. Why don't you ask him to recheck the fuel pressure? If the new assembly is bad, the fuel pressure would drop I'm guessing? This is why mechanics don't...
  16. strutaeng

    2001-2006 K2500 Ext/Crew Cab-6.0 Gas

    Read this article: https://www.motortrend.com/news/chevy-1500hd-2001-2006-crew-cab-half-ton/ Nothing on these trucks are "half-ton." LQ4, 4L80e, 8 lug PYOs with LT tires, front torsion bar front suspension (both 2wd and 4x4), deep frame rails, 14 bolt rear axle with disc brakes, hydro boost...
  17. strutaeng

    2001-2006 K2500 Ext/Crew Cab-6.0 Gas

    Actually, I forgot to mention... 2007 Classic (or some people call them 2007.5) is still GMT800. If you are not going to be going to the maximum GVWR and want a crew cab, I would include the 1500HD in your search. Those had a GVWR of 8,600 lb vs 9,200 lb for the 2500HD. They are really the...
  18. strutaeng

    2001-2006 K2500 Ext/Crew Cab-6.0 Gas

    Umm...those (2500HDs) came out in 2001... 1999-2000 they only made 1500s and non-HD 2500 (still had 8 lugs tho & 4L80e.) Edit: obviously talking GMT800, if it's not apparent. Oh, then there's the 1500HDs (those were real 3/4 ton trucks, just GM marketing tricking consumers because those were...
  19. strutaeng

    Lake Speed Jr, Oil Additives = Snake oil (video)

    I saw that video pop up on my YT list... haven't watched it tho. What's the Cliff Notes on it?
  20. strutaeng

    #1 and #5 injectors not firing

    You can try back probing the faulty injectors directly pulsing signal from the ECU (and 12V+ and grounds) from the battery directly, as appropriate (according to the wiring diagrams.) Probably something the wiring or ground would also be my guess...
  21. strutaeng

    Smoke testing Procedure help needed

    Spark plug wires?
  22. strutaeng

    2008 tahoe 5.3l afm/dod delete issue

    H O-Lee Chit Batman! That's horrendous and I'm sorry for your troubles. I hope things get sorted out soon. I don't think that lifter failure can be blamed on the installer. I hope your friendship with this guy is not ruined.
  23. strutaeng

    04 Z71 Should I tune it?

    1. Yeah, my thoughts too. Save the money for a transmission overhaul. You'll need one, if it hasn't already had at least once before. 2. Engine sounds good, but getting up there in miles. Maybe a valve stem seals is a good idea down the road? Run a compression test and leak-down test to see...
  24. strutaeng

    Building A 1,000HP Capable 6R80/6L80 Trans

    Umm...1,000 HP in a 3,300 to 3,400 lb car. I wonder what translates to when you install it in a 5,500 lb truck? Just wondering? I don't believe they co-designed them. It's a ZF design, which Ford and GM each adopted independently. Unfortunately, GM decided to value engineer some of their...
  25. strutaeng

    Crank-No Start 99 Tahoe 4x4 5.7

    Distributor is a possible culprit. I now see your fuel pressures: those look good. Still not sure what to make of that odd sound while cranking though...and the compression numbers do look a little low on those 2 cylinders, but not low enough where it wouldn't fire. Thanks for the update.

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