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  1. SnowDrifter

    Thoughts on K&N air filters

    I won't touch them. My (tested and validated) concerns are: 1. Oil contaminating the MAF 2. Turbulent airflow due to the lack of a turbulence reduction plate (?) - the honey comb looking thing just before your MAF. -- only lacking on a full aftermarket intake kit though 3. much, MUCH lower...
  2. SnowDrifter

    Fuel pressure issues and poor gas mileage

    Sounds like what happened when my fuel pump went out It would only act up when it got hot. After an hour or more of driving Need to diag if it's the fuel pump, or depending on what year your vehicle is - the fuel pressure regulator or fuel pump control module
  3. SnowDrifter

    Funky Transmission Issues

    OP, I would implore you to drag the thing to a dealer or other independent transmission shop for a second opinion My fear as this goes on is, it'll make it easier from the original shop to distance themselves from the issue *if* it can be tracked down to an error on their end
  4. SnowDrifter

    Changing coolant in a 2004 Tahoe z71 with rear heat

    God's gift to this world when working on cooling systems It's a 2 part system that will pull somewhere around a 90% vacuum on a cooling loop depending on your air supply pressure. (Units on the gauge are rated in inHg, with 30 being full vacuum, I'll get around 26-27). From there, you can...
  5. SnowDrifter

    Which thermostat for updated water pump?

    I believe you are correct in ordering p/n XX057 The '04+ thermostat was updated to include a larger valve See here: Updated on top, original on bottom Note that you absolutely should not be snapping bolts here. The t-stat housing will sit flush (or nearly) with the water pump before...
  6. SnowDrifter

    "Check oil level" Was extremely low

    Ermmm If you put 5 quarts in when you were ~2 quarts low, you're quite over filled. You did check the level again after you topped it off, right? right? If you know you have a leak, you should make a habit of checking and topping off your oil regularly. Every 500 or 1000 miles or something...
  7. SnowDrifter

    Should water pump be replaced if gasket is leaking?

    Bummer! Glad to hear it's all resolved though
  8. SnowDrifter

    Changing coolant in a 2004 Tahoe z71 with rear heat

    They did away with the drain valve on the radiator in 2004, iirc. For standard service, honestly.... Take off the lower radiator hose, then remove the 2 coolant lines coming off the side of the water pump. THose are your heater core lines You'll get 80% of the coolant out of the system just...
  9. SnowDrifter

    2Yrs Unsolved Binding/Knocking Suspension During Sharp Turns

    Is it possible to get a video of the problem? Both a positive and a negative test. i.e. when hot and the issue occurs, as well as the same motion when cold when the issue does not occur.
  10. SnowDrifter

    What coolant should I use?

    Looks about par for coolant that's been run longer than the service interval Take a brillo pad and, by hand, clean it up. I also feel that as we post more and more, there's quite a bit of info missing from this post. From a removed water pump, to concerns about water out the exhaust What's...
  11. SnowDrifter

    What coolant should I use?

    C8H18 + O2 -> CO2 + H2O Water is a byproduct of combustion Idle doesn't really dump enough heat in the exhaust to keep it hot enough to prevent the water from precipitating out in the form of steam. You'll probably be topping it up for a couple minutes before the air works its way all out...
  12. SnowDrifter

    What coolant should I use?

    correct The heater hose outlets are right next to the thermostat. Remove those, you'll drain whatever you'd get from the thermostat For the radiator hose: take the cap off your reservoir, tilt the rad hose up, fill until it dribbles out somewhere. Reconnect, then fill from the reservoir as...
  13. SnowDrifter

    Wiper arm stand up for snow?

    I have some aftermarket wiper arms from doorman that stand up
  14. SnowDrifter

    What coolant should I use?

    it's honestly easier just to remove the lower radiator hose. If you disconnect the heater core lines too, you'll get maybe an extra 3oz out of the system by removing the tstat. Meh, not worth it. The heater core lines are the ones coming out of the passenger side of the water pump. Best done at...
  15. SnowDrifter

    Gas tank Protection gas theft prevention

    lower it lower l o w e rrrrr Actual solution though: Honestly, some stainless steel plate would slow them down I wonder if a polyurea coating would resist drilling?
  16. SnowDrifter

    Rear hvac temperature control works slowly/intermittently

    I will literally paypal whoever can tell me where this goes, 5 bucks. This is beyond ******* me off. I CANNOT FIND ANYWHERE IT FITS
  17. SnowDrifter

    Pulling after 3 alignments

    Yeah dude, gonna need a print out with ALL the spec on it. If you have a previous one, post that too.
  18. SnowDrifter

    What coolant should I use?

    If you drain through the lower radiator hose and remove the heater core lines off the water pump, you'll get somewhere around 65-70% out of the system From there, you'd essentially just check the volume of the system of your specific vehicle (rear heat, engine size, efan or mechanical, etc)...
  19. SnowDrifter

    What coolant should I use?

    Just under the exhaust, on each side, in the front, iirc. I think there might be a pair in the rear as well. Torque spec is 37ftlbs I would recommend against doing so. Nonzero chance of buggering something up or having them not seal when you put them back. Could accomplish the same by doing...
  20. SnowDrifter

    Rear hvac temperature control works slowly/intermittently

    Ok so I was working too hard I didn't realize that GM used the same actuator for everything. Swapped the blend door and vent control units. Problem followed the actuator Replaced it, and she works. Honestly I'm glad it was the actuator and not the control module since said controllers are...
  21. SnowDrifter

    What coolant should I use?

    darker forest-green, or a slightly fluorescent mountain-dew color? Mountain-dew is *generally* universal green is *generally* an older IAT formulation that has been superseded many times over Honestly you can run universal if that's what's in there. It's fine. It's OAT, just like dex-cool...
  22. SnowDrifter

    Rear hvac temperature control works slowly/intermittently

    Been like this for a while now.... But it needs to not be like that. Issue is this: the rear temp control doesn't change immediately. However, I can set it to all-hot or all-cold and days/weeks later, it'll finally pop over. Issue presents the same behavior whether using the front OHC controls...
  23. SnowDrifter

    Funky Transmission Issues

    Second opinion when?
  24. SnowDrifter

    Should water pump be replaced if gasket is leaking?

    Yup exactly Depending on what I take apart: Every gasket or spinning bit gets a torque wrench. Actually most things see a torque wrench. Just one of those 'things' I developed a habit of long ago. Every gasket surface gets a touch of o-ring grease Every static item gets a dab of anti-seize...
  25. SnowDrifter

    03 Yukon rear differential temoerature ranges?

    Have an impact wrench? It'll either break free or break off lol. If you get it free, put it back together with a small dab of antiseize

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