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  1. M

    1999 GMC Yukon Air suspension / rear Trailer auto leveler problems

    Here it is at Autozone although I think there's just says GFU or GFV http://www.autozone.com/autozone/parts/1999-GMC-Yukon-4WD/Fuel-Pump/_/N-jd24xZ8vcz2?filterByKeyWord=fuel+pump+&fromString=search and at ORiley this is where it mentions rfi...
  2. M

    1999 GMC Yukon Air suspension / rear Trailer auto leveler problems

    Well I am seriously a fuck-tard. I just figured out why I couldn't determine where this "leak" was coming from. Turns out I don't have one! Why the noise seemed to get worse when I hooked up a trailer is beyond me...maybe it was all in my head. Anyways.. the noise I've been hearing this...
  3. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Not bad got about 80k leg up on mine, hopefully mines still kickin around then, looks like mine had a rough life with its previous owner.
  4. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Well just wanted to give that update on my improved fuel economy after doing the upgrade. While it hasn't been the miracle I hoped for, it has improved and also I have yet to take any long freeway trips which give me my best mileage and would be a true indicator of the improvement. Most of my...
  5. M

    1999 GMC Yukon Air suspension / rear Trailer auto leveler problems

    Hi guys, sorry if this topic has been discussed somewhere else on here, I did some searching around but couldn't find quite what I needed. So here's the problem- I have a 99 Yukon which has the what I believe its called auto ride? air leveling suspension to level out the rear when you hook...
  6. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Yes the dizzy as you guys like to call it was a major pain as well. luckily I had my brother working on this project with me and he had done the gaskets on his old caprice last year so was familiar with the task. Although it still probably took 30 min or more to line it up. As far as...
  7. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Well I got it done, but what should have been a pretty straight forward job turned into a major pain in my ass thanks to dex-cool it seems. I should have double checked that water coupler on the manifold again while I had it off. Thought I just needed a new plastic quick connect piece and the...
  8. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Thanks for the tips guys its all going back together today so ill let you guys know how it goes.
  9. M

    Vortec 350 Intake manifold gasket + MPFI upgrade any tips?

    Hi all, In the process of replacing the lower intake manifold gasket on my 99 Yukon. Doing some other work while im at it along with doing the spider upgrade. Replacing plugs, wires, cap, rotor, spider, intake bolts, thermostat, and pretty much any gasket involved. Also am cleaning...
  10. M

    Just bought 99 Yukon Want to get her ready for summer road trip/towing travel trailer

    Well I don't know how to quote someone's post yet but - Yates thanks for the info ill give that a try this weekend willxfs- Ill be doing all the work myself. Thanks for the tip I've never had a vehicle with an auto-transfer case so good to know. As far as the shops screwing up- that is...
  11. M

    Just bought 99 Yukon Want to get her ready for summer road trip/towing travel trailer

    BirchyBoy thanks for the input! Looks like we've got the same ride. Mine as well had the +1 tire size when we bought it but it needed tires and I decided to go back to stock...not sure how I feel about it now. I sure liked the look of the bigger tires and I liked the higher ground clearance. But...
  12. M

    Just bought 99 Yukon Want to get her ready for summer road trip/towing travel trailer

    Hi all, New to the forum and new to towing anything other than what my old S10 could handle. This summer my wife and I plan on traveling the Pacific North west. We will be purchasing a travel trailer of some sorts and will be traveling in our 1999 Yukon we recently bought. I was hoping some of...
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