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  1. M

    Coolant Pressure 6.0L Vortec

    I have tried searching for electric fans but was only able to find the one kit that I previously mentioned that is no longer available. I've spent literally hours searching Google for something that is drop-in. This is the kit that I found that is no longer available...
  2. M

    Coolant Pressure 6.0L Vortec

    Well, just over 3 years later and guess what... yup, I still have the same problem! Absolutely everything in the cooling system has been replaced, the AC compress was recently replaced as well as the AC idler pulley / tensioner and water pump (again) as well as the thermostat and I still have...
  3. M

    How many miles does your vehicle have on it?

    98K on my 2007 Yukon XL 2500
  4. M

    Coolant Pressure 6.0L Vortec

    I hate to resurrect an old thread however, my problems still persist for anyone else having the same issue I am. The only thing I have not done is a proper pressure test which will be on my list shortly. Over the winter (we've had a mild winter here in AZ), the truck, while sitting at idle...
  5. M

    Coolant Pressure 6.0L Vortec

    We are back from our camping trip, came home yesterday. Overall, the truck did pretty well. Better than I had expected. The first part of the trip is mountainous and has a couple of decent hill climbs. The engine never got hotter than around 235* and the transmission stayed around 200* with an...
  6. M

    Coolant Pressure 6.0L Vortec

    Thank you for your reply. While I don't necessarily disagree, if you're referring to the 2001 Suburban with the 5.3 liter in your signature, your engine is different than mine. Regardless of being a 6.0L, even the 5.3L from my same year is different. The 1500's in my same year have electric fans...
  7. M

    Coolant Pressure 6.0L Vortec

    Thank you for the replies. So it seems like this is pretty normal then? I have thrown probably damn near $1000 at this engine in the last two months and I am sick of throwing money at it and nothing changing. The last item to replace is the radiator and I am thinking about doing it just to get...
  8. M

    Coolant Pressure 6.0L Vortec

    Okay, so even if that is normal, why in the hell is the engine getting over 210* sitting at idle for a couple of minutes? On my way home, I stopped and grabbed my toy hauler from it's storage which is about 5 miles from my house and is flat terrain. The engine temperature reached a little more...
  9. M

    Coolant Pressure 6.0L Vortec

    Well, the saga continues. So today I replaced the water pump, both belts, and the idler pulley. I proceeded to flush the entire cooling system with distilled water even though the DexCool coolant says tap water is fine. I used approximately 8 gallons to flush the system from everywhere I could...
  10. M

    Coolant Pressure 6.0L Vortec

    Thank you for the search. For some reason every time I am trying to cross reference one part for one vehicle to another, I can never figure out how to do it. I am a website developer and server engineer but some websites just suck for comparing in my opinion. That being said, it's also funny...
  11. M

    Coolant Pressure 6.0L Vortec

    In response, my Yukon has an external transmission cooler in front of the A/C condenser so going from the front most part of the truck in towards the engine, I have: transmissions cooler, A/C condenser, radiator, hydraulic / mechanical / clutch fan, then engine. As previously mentioned, I am...
  12. M

    Coolant Pressure 6.0L Vortec

    Yes, I understand wear and tear, even at only 90k miles. I also understand towing is hard on vehicles and that I didn't necessarily need a transmission flush when it's a cooling system issue. My thought was that it had something to do with the transmission fluid having been broken down and the...
  13. M

    Coolant Pressure 6.0L Vortec

    I am resurrecting this thread to provide an update. My problem still isn't fixed. The truck will begin to get warm (higher than normal operating temperature of 210*) while sitting at idle. What I have noticed is that this happens when the outside temperature is more than 100* and the...
  14. M

    Coolant Pressure 6.0L Vortec

    Bump... Anymore input?
  15. M

    Coolant Pressure 6.0L Vortec

    Mine is definitely a fan clutch. We basically got the truck up to operating temperature then shut it off and tested to see if the fan had any resistance which should indicate that the clutch is / was engaged. You can also hear it kick it up and power loss. I swear I had better not have blown...
  16. M

    Coolant Pressure 6.0L Vortec

    That being said, how much pressure should this system hold? For example, before I do the pressure test, if the truck were running and up to operating temperature and I were to squeeze the upper radiator hose, how far should I be able to pinch the sides together, if at all? I know on my Duramax...
  17. M

    Odd soft pedal while braking

    Yeah I second Gurrtz but it could also be the master cylinder. There also could be air in the line. The only way the piston in the caliper would be stuck and you are not pulling to one side while braking is if the piston in the caliper is stuck open but then you would hear it against the rotor...
  18. M

    Low oil pressure solved

    I'm with you. I only purchase AC Delco parts from my wholesaler. I created a small business in the auto parts industry and got a sales tax certificate just so I could purchase AC Delco parts at cost without having to go to the dealer. The account has come in handy and I probably do about $5000...
  19. M

    Oil leak ...great.

    I second Gurrzt but agree with MichaelSE as well that it could be the oil pan gasket. How many miles are on your rig? If you are close to 100k or more and have never done the engine oil pan gasket, I would drop it, check for any metal particles, clean the pan really well inside and out and then...
  20. M

    Coolant Pressure 6.0L Vortec

    Bump... All of the members on this forum that drive a Yukon / Tahoe that have a 6.0L and no ones knows if these systems are supposed to hold pressure? Items Checked / Replaced Flushed entire Cooling System with hose Replaced Thermostat with AC Delco OEM Replaced coolant with AC Delco DexCool...
  21. M

    White smoke and #7 plug toasted.

    Coming from someone currently rebuilding their Duramax LLY with a massive head gasket failure that took out the turbo, I would fix it. The cost to rebuild my engine including all of the internals (pistons, rings, rods, lifters, bearings, etc) plus machining the heads, block, crank and replacing...
  22. M

    Coolant Pressure 6.0L Vortec

    I have a 2007 Yukon XL 2500 SLT with the 6.0L Vortec engine. It has approximately 86k on it. It was purchased shortly after this passed Thanksgiving when I blew my Duramax up (that's another story for another time) and was purchased specifically so I can tow my 30' toy hauler while my Duramax is...
  23. M

    towing and trailer sway

    So what are you actually experiencing? The trailer swaying all over the road? A lack of powering trying to tow your trailer(s)? Something else? If the trailer is swaying and you have a weight distribution hitch with sway control, you can still have an issue with too much weight towards the back...
  24. M

    any tips on changin the #8 spark plug???

    Do the first seven and plug wires at home then go to best friends house for BBQ and birthday party and ask him to do #8 since he is better at it and doesn't have "girly" hands like you do. Note: I am a software developer and systems engineer which is why I have "girly" hands. It still took my...
  25. M

    New from Arizona

    Hello fellow GM owners! My name is Adam and I reside in Surprise, AZ. I have a 2007 GMC Yukon XL SLT with the 6.0L Vortec and 4.10 gears that is my wife's daily driver and current tow vehicle. I also have a 2005 Chevrolet Silverado 3500 Duramax currently being rebuilt and a 2003 Volkswagen Golf...

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