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  1. K

    Looking to go to 4.88's from 3.73's

    Ok so I got a 6" lift on 35's and as of right now I have stock 3.73 gears. I lost a lot of get up and go with the lift and tires with the stock gear ratio. I'm doing some towing of a camper recently too so I really need to switch them out. In feel like I'm wasting more gas on top of it due to...
  2. K

    Possible fuel pressure issue?

    Ok I've done some searching and can't find the same issue that I have, so I figured to ask in a post. I have a 2004 Yukon 6.0L . The truck starts no problem, but in the morning my issue is much more prevalent. If its real cold and I give the truck wide open throttle, it really falls on its face...
  3. K

    Error codes p0120 p1516 p2135.....ugh

    So I left the barber yesterday and started my truck up. Bells start going off and it says "reduced engine power" and the truck has very low power for sure. I turned the truck off and waitied for a few minute to start it back up. Truck started up and ran normal again but still has the cel on. I...
  4. K

    High Flow Cat for 04 Yukon XL

    So im looking to replace my cats with high flow ones during my new muffler install. I found a few that were pretty cheap....around $80 each. Is it necassary to get an obd2 compliant cat or is a pre-obd2 cat ok? And any good suggestions as to which one i should go for? I was looking at the...
  5. K

    Can't change the output of the hvac system!

    i'm hoping someone can help me with this because I'm gonna need to use my defroster really soon! Its stuck on blowing through the forward vents and wont do anything else. Also if i put the ac on, it still blows hot air on passenger side, but cold on the drivers side. I dont know if its the same...
  6. K

    Exhaust configuration question for Yukon 2500 6.0l

    I know there are so many exhaust threads on here, but I couldnt find the answer that I'm looking for. How is the exhaust on this truck configured? is there a stock Y pipe on the system? It's dark outside and I don't have a light to go check. I'm looking for a new exhaust and I'm lost lol. If its...
  7. K

    How many miles you guys got on the odometer?

    Ok so I just bought a Yukon that has 165k on it and it runs great! Just curious how many miles you guys have on your trucks and how strong the motors still are....mostly concerned about the 5.3L motor cause that's what I have.
  8. K

    Anzo Black U Bar headlights on sale for $276.91!

    I'm new to this site but I just ran across a great price for these headlights that I'm putting on my new Yukon that i'm picking up tomorrow. I figure I'd pass this on to you guys in case anyone was looking for some new lights. I think the halo lights are a little played out already and these are...

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