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  1. J

    Pour one out for a fallen Yukon

    Well, after a bunch of work and money, my kid wrecked the car. She's bruised up a bit, but fortunately she'll be just fine. As for the car, ain't no coming back. The roof is absolutely smashed in, the frame is jacked, and the driver side suspension is in pieces in a field somewhere. I'm not...
  2. J

    How to know if transmission is 4x4 or 4x2?

    Is it in the rpo codes or the vin somewhere?
  3. J

    Transmission whining noise, codes, and can't drive over 40mph

    The transmission has over 200K on it and I read P0741 & P0757 when I hooked up a code reader. The under hood transmission dipstick seemed to read OK. Somebody tell me this car isn't toast after all the work I put into ito_O
  4. J

    Can the brake system be bled if the EBCM does not work?

    I attempted to fix my module, but it was unsuccessful. Fortunately, I'm not concerned about having ABS. However, I have a problem that I didn't consider before starting my brake line job. I've already replaced a couple brake lines that connect to the ABS valve and I still have some more to go...
  5. J

    Do Yukon HVAC systems use both orfice tube and a TXV?

    I'm doing some reading about car A/C systems and I wanted to compare what I read to what I see. From what I read in a service manual and along with some poking around rockauto, it looks like this car has both in it. If true, that's surprising as I thought a car would only have one system or the...
  6. J

    How to temporarily seal brake line leak?

    For starters, this car WILL NOT be driven anywhere until the line is repaired. All I want is to stop the leaking in my driveway till I can get everything together I need. It's a pin sized hole with a slow leak and I tried to just wrap it with duck tape but it hasn't really slowed the flow.
  7. J

    Will I have to worry about an ABS bleed if I replace the rear brake line?

    As discovered in my other thread, I need to replace the rear brake line that runs on the driver side frame rail. Is there a high likelihood I'll introduce air into the ABS upon replacing this line?
  8. J

    Caliper not bleeding with pressure bleeder

    I'm using the motive power bleeder and I'm attempting to bleed the rear passenger caliper. I also just replaced this caliper. I initially pumped the brake pedal a few times to try to get some fluid to the new caliper. I then connected the bleeder and pumped it to 15psi. The bleeder screw was...
  9. J

    Stripped out rear caliper bleeder screw hole

    I rounded off the original bleeder and replaced with a brake best brand bleeder. During tightening I stripped out the hole though. The screw is out but I think I might have to replace the caliper. Do I have any other options?
  10. J

    How do I know if I have a limited slip axle?

    I need to replace the rear slide pin boot. They come in two options: with limited slip axle and w/o limited slip axle.
  11. J

    Getting P0172 & P0175

    My B2S2 seems to be working since the voltage is changing, but the B1S2 isn't fluctuating at all and sticks at 0.445V. I also notice the short term fuel trims for both sensors are at 99.2%. Is this high fuel trim normal? I think I'm going to replace the B1S2 as a first step since I followed the...
  12. J

    What O2 sensors do the fuses O2A and O2B feed?

    I think O2A feeds bank 1 O2 sensors and so on, but I don't want to assume.
  13. J

    Can an unsealed ECBM cause squishy brakes?

    My brakes are spongy since I put everything back together. I had removed the ECBM and soldered the bad connections. I then screwed it back together and reinstalled it without reapplying new RTV sealant. I also had to swap the front pads since I discovered they were installed not only on the...
  14. J

    Can you safely put jackstands under the rear sway bar?

    I lifted it in the middle under the bell housing. I can't figure out where to place them in the back. If that's not the spot, please let me know the right one.
  15. J

    How to change brake fluid?

    I've never done this before, but I know this car needs it bad. The fluid is pitch black.
  16. J

    Can't remove caliper from rotor for pad change

    I'm trying to swap the pads out. So far I've completely removed the upper and lower slide pins but I can't get the caliper to slide off all the way. I've tried to pry in between the rotor and caliper with a prybar and it's not budging.
  17. J

    Can't tighten upper ball joint nut

    I can't fit an Allen wrench in the space between the axle and the bottom of the bolt. I also tried applying downward pressure with a pry bar and it still keeps spinning. I'm getting crazy pissed here.
  18. J

    How do I know what size rear pinion flange seal I need?

    I've come across data that mentions 8.25", 8.625", and 9.5". How do I known which one I have?
  19. J

    What grease should be used for grease zerks?

    I never really thought about it, but I've been using either EP moly grease or multi purpose lithium grease from O'Reilly's Masterpro brand. The stuff's got a black color to it.
  20. J

    New Moog CK80942 Upper Control Arm Ball Joint Boot Separated

    I installed the arm without any issues, but I had to loosen the ball joint nut again for my unexpected lower ball joint replacement. I used a screw down ball joint separator and this is what happened. I can't see how this could've happened since I took great care not damage the boot when...
  21. J

    How do you replace lower ball joint?

    After replacing my upper control arm, I looked down and saw that somehow the boot on my lower ball joint split open during the repair. I looked up info on it for my Yukon, but data seems sparse. One place mentioned I'd have to drill out rivets. If you know about a dealer tool to do the job...
  22. J

    No heat from front vents

    I installed the 12703898 water pump along with the 15-11057 thermostat. I see that heat is coming from the rear vents and I also see that the heater core hoses are getting hot, but nothing is coming from the front. I also see that the lower radiator hose is not heating up. I let the engine...
  23. J

    Which thermostat for updated water pump?

    I've got a 2001 yukon and I got the water pump with the p/n 12703898 that has the number 12681178 stamped on it. I'm really confused about what thermostat to use. The description at ac delco for the water pump says: Which is weird since there's like 3 different years being mentioned. The one...
  24. J

    What coolant should I use?

    The manual says to use dexcool so that's what I got. However, when I drained my radiator, green coolant came out. I think maybe something universal was added by the last owner. I don't know if it's OK to refill with the dexcool at this point.
  25. J

    Several ABS codes

    When you first start the car up, there's nothing, but after a minute or two of driving, the abs light comes on. It also feels like something is dragging. My scantool pulled these codes: C0265 C0245 C0241 C0251 C0246 C0242 C0252 There's so many I don't know where to begin. I kind...

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