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    What did you do to your OBS GMT400 Tahoe/Yukon Today?

    Swapped out my idler pulley, tensioner and serp. belt. Both the idler and the tensioner sounded like roller skates. Plus the tensioner was bouncing around alot implying the belt was getting hung up a lot. Now she runs smooth and no more loud noise.
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    Intake Gasket or no?

    No oil in my radiator nor any coolant in my oil. So looks like I may have to do the intake gasket huh? Guess I might as well do the spider injectors while i am at it. Don't think they were ever done. Anyone have any success with the Fel Pro gaskets?
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    Intake Gasket or no?

    Well, I kept getting a P0430 code for the past 3-4 weeks. Finally got around to looking under my truck and noticed that the flange by the cats was all wet. I cannot tell weather it is coolant, oil, or both. Then I checked the plugs on bank 2 and found this: Am I burning Dexcool or oil? My...
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    New tires needed, open to options

    Have about 20k miles on a set of Yokohama Geolander AT-S. Has a nice aggressive tread pattern for a tire that has very minimal noise on the pavement. These things barely sing at 75-80 on the highway. Cannot compare the ride to another tire because before these 285's I was running the stocker...
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    Master Cylinder - AC Delco 174722 or 174723

    When I did my hydroboost retrofit it was the bore of the MC that was too big to fit into the hydroboost . I bought an MC for the hydroboost so that it could fit into the HB. If I were to do it all over again though they say if you can find a way to fit an NBS MC the piston is a bit longer so...
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    Front end clunk. Need help.

    I had this problem on my 4 door and still have it. Over the years i guess my axle seals by the input flanges have worn out and the flange has some play. Grab your inner cv joint and jiggle it around to see if the flange moves around. If so then that is your problem. I started out with play on...
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    Dropping fuel pressure at WOT

    Don't think its the regulator. i didn't post pics or video, but when I originally checked the pressure and we were at 60 psi I experienced a rise about a lb. a minute. This was after shut off. Then the pressure held for a good five minutes at until i depressurized. Kosher for the fpr no?
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    Dropping fuel pressure at WOT

    What is it that makes the pumps go? Why are these any different from other pumps? Is it the vendors for our vehicles? If I get a walbro how did you make it fit in the sender? Is it fatter or skinnier than a stock pump?
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    Dropping fuel pressure at WOT

    Ok! So yes, things are leaning towards a weak fuel pump! I managed to screw on the fp gauge when the truck was sputtering on the way to work. This is what I found: That was at idle! For some reason my iphone was having problems taking video, but at half throttle I was dipping to about 15 or...
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    Dropping fuel pressure at WOT

    Still doing the same thing sputtering after a long commute. This time though after the ff change had enough power to not allow the truck to go in limp mode. This morning got P0420 after just getting going? How can i confirm whether my cats are good?
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    Dropping fuel pressure at WOT

    Throttle response has change for the BETTER with change of the fuel filter. Engine performance has definitely improved. I can goose the throttle now with no sputtering. However I think I still have a problem. When I goose the throttle from cruising at 30 mph and do a 2nd gear drop the truck...
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    Dropping fuel pressure at WOT

    I know updates have slowed down because of work. Hopefully I can get a chance to do the fuel filter this afternoon. One thing I have noticed though is that I am consistently getting the sputtering/stalling about 45 min into my hwy. drive. If I could hook up a fuel pressure gauge while doing...
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    Dropping fuel pressure at WOT

    It does it no matter what the level. I topped it off Monday when it did it first, and it did it less severe today with the tank at half. It seems to do it though at the end of my 1.25 hr. commute and less time if I am sitting in traffic. Could this be the fuel pump harness heating up and...
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    ENGINE DECISION TIME!!!!!! opinions please

    383 would prolly be the easiest upgrade no?
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    Monroe Shocks

    KYB Monotube's stopped the float for me. Much more firm and controlled ride. Have been runing them for about 20k and they are great. More than monroes but less than bilsteins.
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    Dropping fuel pressure at WOT

    Thanks that sounds like the same hose retorq said he had a pinhole in. When I shut off the truck it takes a minute for the pressure to climb to 58 psi and 2 minutes for it to climb up to 62 psi. That part to me seemed good. This tells me my regulator is good or no?
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    Dropping fuel pressure at WOT

    Yea I wish I had a way right now to see my afr, but don't have a tool right now. I guess to properly go through everything I will have to drop the tank regardless. Sux...
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    Dropping fuel pressure at WOT

    Ok, so after I have gotten my tranny rebuilt I was heading home from work. All of a sudden the truck bogs out. So I let off the throttle. After laying in traffic for 20 min the bogging occurs at part throttle too as well as WOT. Took it home and let it sit for a day. Next day checked the fuel...
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    WTH are these?

    Thats for the HVAC. The round one is the blower motor.
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    Whats your mileage and year?

    96 with 110k a newly rebuilt tranny!
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    New Tranny

    The reason why I figure the fluid was the culprit is because of my pressure loss I was experiencing before my tranny just flat out stopped working. When the planetary gave way I wasn't in a huge upgrade or even flooring my truck. My truck doesn't even experience much hard take offs to begin with...
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    Goodyear or Yokohama?

    285's and 3.42's definitely made my tranny work harder. But your 3.73's should be fine. Optimal performance should be 4.10s, but your gas mileage will definitely be affected. Got geolander ATS's and they are great for daily with minimal noise. I drive in the rain like its dry out, and on the...
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    New Tranny

    So, at 110k my original transmission took a dump! Against my own instincts I did a pan drop to replace the original pan with an extra deep pan with a drain plug. To make things a bit worse I got sold my the Monster Transmissions sales rep to get Synthetic Tranny fluid. Great stuff! BAD for an...
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    Pics of 285's?

    Real crappy pic but 285/75R16 on 16x8 with 0 offset
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    Time for tires. What is needed to clear a 285/75

    Not sure what the height should be. When i fitted mine I added a 2" block in the rear first since I was sagging so the lift ended up being like a 1". It raised the rear only about a 1/2" higher than the front. I added my 285's with a 16x8 zero offset rim only to rub at full lock and on bumps. I...

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