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  1. J

    99 yukon taillight issue

    Thanks guys I'll go ahead and do that today after work. Appreciate the help!!
  2. J

    99 yukon taillight issue

    Can't figure out what's going on with my mom's Yukon. Apparently the driver side taillight isn't exactly working right. If I manually turn on the lights from the switch in the dash, the taillights will light up. Anything else, nope. The passenger side works fine, but the turn signals, hazards...
  3. J

    99 4wd yukon replacing tranny help

    my bro has a code reader/scanner for his 1999 s10 xtreme, which should work for the 99 yukon as well but it's not. I don't know exactly how it wasn't working but it wouldn't read the codes on the yukon today to find out what they were. i can ask my bro what or how the code reader was saying when...
  4. J

    99 4wd yukon replacing tranny help

    Btw, curious...I guess the code reader/scanner isn't cooperating with our computer? Any idea why?
  5. J

    99 4wd yukon replacing tranny help

    thanks, i hear ya. will do!
  6. J

    99 4wd yukon replacing tranny help

    I guess I need to double check other people's work. I went through the fuses underneath the hood and my dad went through the ones in the dash and said they were good initially...? lol btw is a blown security fuse a hint that there still might be an issue with the whole passlock/vats thing?
  7. J

    99 4wd yukon replacing tranny help

    Apparently after putting in a fuse in the dash for the "security" terminal it started up but it's sputtering right now...
  8. J

    99 4wd yukon replacing tranny help

    Thank you. I'll have to go through it when i have some time. Appreciate it.
  9. J

    99 4wd yukon replacing tranny help

    my brother is gonna bring over a code reader tomorrow so hopefully that will get us somewhere. i didn't check the injectors yet...i need another hand for that so hopefully soon! ---------- Post added at 09:50 PM ---------- Previous post was at 09:32 PM ---------- pulled the #1 plug, it's...
  10. J

    99 4wd yukon replacing tranny help

    So i messed around with it tonight for a little bit. I put the transfer case breather hose in and that did nothing. looked for shorts, beat up wires, wires stuck between the block and tranny, anything out of the ordinary and it all seemed fine. i looked at the grounds behind the block, and...
  11. J

    99 4wd yukon replacing tranny help

    I'm just curious. If we shorted something out that controls power to the injectors, whether that be ecm or what not, wouldn't we have a blown fuse? All the fuses seemed fine. how do i narrow it down to the injectors not opening? can i test their wires with a multimeter or something?
  12. J

    99 4wd yukon replacing tranny help

    the security light stays on when the key is turned but doesn't do anything. doesn't flash or go out until i take the key out. does that mean anything? ---------- Post added at 07:45 PM ---------- Previous post was at 06:13 PM ---------- What about the hose on the top of the transfer case that...
  13. J

    99 4wd yukon replacing tranny help

    I checked, looked good but swapped the ecm1 fuse with another one anyways. still no start. if the oil pressure switch was bad, would i still get oil pressure on the gauge in the dash? because it's showing it has oil pressure. should i swap out the fuel pump relay for another?
  14. J

    99 4wd yukon replacing tranny help

    They all seem fine. I went back and wiggled around the wiring to make sure it was all free and loose kinda and they seem ok. I did take out the top bellhousing bolts from up top so i'm wondering if i ruined some wiring on the oil pressure switch? I believe that supplies power to the fuel pump...
  15. J

    99 4wd yukon replacing tranny help

    so key on, fuel pump priming it's at 55 psi...should be good enough right? i know my s10 is 55-60psi, 60 needed to start, so i imagine that the fp pressure would go up if i were cranking it over so it appears its within range...what else could it be? i don't think our grounds are a problem...
  16. J

    99 4wd yukon replacing tranny help

    it won't even stay on long enough to idle, so i could do one when the fuel pump primes but that's about it...lol will do soon!
  17. J

    99 4wd yukon replacing tranny help

    haha okay....will do. Don't have any coke here anyways...I bought the gauge though so we'll see tomorrow morning/afternoon what it sits at...the truck has 190k+ miles on it so i guess i wouldn't be surprised if the fuel pump went out...what's the most common/reliable replacement for it? walbro...
  18. J

    99 4wd yukon replacing tranny help

    thanks. Will do first thing in the morning. Bought a new fuel pressure gauge/tester so we'll see. cable should be fine but if i have to i'll pour some coke over them to clean them up.
  19. J

    99 4wd yukon replacing tranny help

    Hmmm. how likely is it that the fuel pump took a dump on us while we had the yukon down for about a month or so? the grounds shouldn't be a problem at all. didn't mess with anything up front besides the battery cables. i'll have to go grab a new fuel pressure gauge/tester as i broke the...
  20. J

    99 4wd yukon replacing tranny help

    So we got a new problem now...got everything all buttoned back up, put fluids in...now we're trying to start it, and all it does is crank over, start and run for half a second, and die each time... any ideas why?? thanks!
  21. J

    99 4wd yukon replacing tranny help

    just curious. anyone got any pics of how the shift linkage looks while in "park" and also where exactly it fits in at the bracket that will hold itself in place also? Hopefully I explained that decent enough for anyone to understand. haha...thanks!
  22. J

    99 4wd yukon replacing tranny help

    Ok cool!! Thanks! That's what we were hoping for. We took the center piece off and put it on the tranny first thinking that would be easier. Hopefully it is. Appreciate it!
  23. J

    99 4wd yukon replacing tranny help

    We got the old one out and the transfer case as well. Problem is we're not sure what's the best way to go about putting it all back together. I've never had to mess with a 4wd and all so I was hoping someone has done this before. When we took the tranny and transfer case out we had it angled as...
  24. J

    taillights don't work/fuse blowing

    that would mean i have a blown fuse as well right? so then, what happens if i don't have a blown fuse..? ---------- Post added at 02:28 PM ---------- Previous post was at 01:00 PM ---------- Actually after further inspection, this hl switch is probably toast, the connector is fried and the...
  25. J

    taillights don't work/fuse blowing

    Anddddddd another problem. Yesterday when I went to take the taillight out of it's holder or whatever, the car was running and it automatically shut off...I thought it was a loose battery cable, tightened it back up and it started back up...Go out there this morning, and it's dead, won't start...

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