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  1. Alex_M

    1997 Suburban 454 ECM Swap Help

    Agreed. The plan will be to get it running again and then do as much as possible to check for other issues throughout the system. There have been a lot of cooks in this kitchen, which I knew going in, so I've got a fair amount of work ahead of me to bring it back to solid and reliable.
  2. Alex_M

    1997 Suburban 454 ECM Swap Help

    Hey all! I purchased a buddies 97 Suburban K2500 7.4l. He had issues with it the four years or so he owned it. I'll say up front, my question is - what is required to swap a reman ecm? History is as follows, for those interested and for a differential diagnosis if anyone has one. Buddy bought...
  3. Alex_M

    K2500 Brake Upgrade?

    Awesome. It's hydroboost as is my parts truck, I'll look into it. Thanks!
  4. Alex_M

    K2500 Brake Upgrade?

    Hi all! Long time owner of a plurality of GMT800s, first time owner of a GMT400. I bought a 98 Suburban K2500 7.4l Automatic off a buddy to haul the family and pull the camper with. The one place I'd like to upgrade is the brakes. My question is this - does anyone know of an easy brake upgrade...
  5. Alex_M

    Lifted Tahoe project/daily driver

    Agreed - wheel spacers can be dangerous if misused. Absolute largest I'll use are 2", absolutely must be hub centric, and high quality studs in the spacers. Some spacers use a lower grade stud than factory. Actually use a torque wrench instead of an impact with spacers as well, and double check...
  6. Alex_M

    Rock Sliders

    I'm planning to cut our my rusty rockers and weld back in 2x5 box tube and tie back into the frame.
  7. Alex_M

    A/C Box blend doors

    Looks like a pretty simple part - I'd say avoid the scanner and manually model it. It will be more accurate with a higher likelihood of fitting.
  8. Alex_M

    A/C Box blend doors

    Haven't personally. I'd avoid PLA because of the heat, but ABS or Nylon... something like that I'd say it would hold up just fine.
  9. Alex_M

    AC Leak - Pulling my hair out.

    Quick Q, somewhat related - how many blend doors are there? I've got the number three in my mind but cannot remember if that's correct. I've got an actuator that's been finnicky the last couple years, so I'm going to replace those while I'm in there as well. And finally put in that crack-free...
  10. Alex_M

    Saved from scrap

    And pay the premium for injectors from the parts store. There are fake "AC Delco" injectors floating around. I had one stick open and kill a motor.
  11. Alex_M

    Saved from scrap

    I'd check spark plugs first - I've changed many a factory set at 250-280k miles and it makes a world of difference. My next guess is fuel injectors. I've had 2 or 3 with misses like that I had trouble tracking down and it was clogged fuel injectors. I'd swap coils around cylinder to cylinder...
  12. Alex_M

    AC Leak - Pulling my hair out.

    Understood and good to know - thank you.
  13. Alex_M

    AC Leak - Pulling my hair out.

    With UV. Negative, I have not noticed any AC oil. Thank you!
  14. Alex_M

    AC Leak - Pulling my hair out.

    Wonderful - thank you very much for your help. I'll check it out.
  15. Alex_M

    AC Leak - Pulling my hair out.

    Having trouble finding my UV light now. Lets assume the answer to that is yes (will confirm once I find the light). What would that point to - evaporator?
  16. Alex_M

    AC Leak - Pulling my hair out.

    Hey all! Need some help from someone more experienced with AC work. I have a refrigerant leak that I cannot find. It leaks out every 12-24 hours, so I've been living without air for the most part. I've put UV dye in; couldn't find anything. Put a double shot of dye in; couldn't find anything...
  17. Alex_M

    Any benefit to running anything above regular (87 octane) in 4.8L V8?...

    I've run both across many vehicles. In a standard gmt800 I have never seen a difference in economy or power. Same was true for the one gmt900 I owned. I run premium (93 octane at the elevation I live at) in my current daily, but it's a 6.0 with 5.3 heads so it needs the extra octane due to the...
  18. Alex_M

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

    The short answer is you can do anything with enough time and money. There are no bolt in options, but an experienced automotive fabricator could certainly complete the conversion.
  19. Alex_M

    03 Yukon SLT 5.3 - 4L60E is fried - Best way to sell/dispose??

    Lots of folks would go for private sale if it's otherwise clean. Still won't get a lot for it, but someone would be willing to buy it and bring a trailer.
  20. Alex_M

    Rear axle cross compatibility.

    Had one out of a gmt900 sitting in the yard for a bit. All the mounts and brakes looked the same. Bought it without a yoke, guy said he had to change the yoke cause it was different. RockAuto lists them as the same universal joint so I'm not sure on that. 3.73 more common in Z71 but available...
  21. Alex_M

    Off Roading with an automatic

    Agree completely, best advice in the whole thread. Find a buddy and make some memories together.
  22. Alex_M

    Off Roading with an automatic

    That's a lot of miles; certainly more than I have. I can see your logic about breaking parts. It's not how I personally handle training beginners, but I can appreciate it. I prefer to start folks out doing what I would do instead of retraining later and throw a warning to be easy on the...
  23. Alex_M

    Off Roading with an automatic

    You're welcome to think what you like. Your continual insistence that I told him to use 4lo all the time comes off as sounding like someone with poor reading comprehension skills. As I stated and reiterated, "where you need 4wd". Of the terrains you listed, the only one I'd choose 4hi would be...
  24. Alex_M

    Off Roading with an automatic

    You don't necessarily need it, but it is much easier on your transmission. If you are offroading and in a situation where you need 4wd (which is when i specified to use 4lo - "read my post") you are not going to get anywhere near 40mph. You likely won't see 10mph in that situation. I have...
  25. Alex_M

    Off Roading with an automatic

    If you're in 4wd use 4lo regardless of terrain, but if you're in 2wd just use what gear feels comfortable. I would lock it into a gear to save on your transmission either way.

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