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  1. R

    Transmission shutter/leaking

    Hi there, so I have a 98 GMC Yukon, 4 wheel drive. It has ~262,500 miles, and I take extremely good care of it. It’s always had a slight shake to it on the highway and I replaced the entire front end trying to find the problem, and I think it came down to the hub assembly and CV’s. But after I...
  2. R

    Highway Shaking

    Hello! I have a 98 GMC Yukon and as said in the title I'm getting a shaking/vibration when I reach speeds 50 and above. About a year or two ago I hydroplaned into a curb going ~40MPH. It bent my rim, and that's when the shaking started. I got new rims since then and put the same tires on...
  3. R

    ECU Flash

    Hello again, I own a 98 GMC Yukon (5.7l V8). Was wondering what device I could use to flash my ECU (for performance)? I had a 05 Subaru WRX a while back, and we used COBB AccessPORT Tuners to Flash our ECU's on the go. You could backup and load ECU tunes whenever you wanted, is there a device...
  4. R

    Bad heat smell

    Hey guys, I have 1998 GMC Yukon 4.7l V8. I was doing a U turn on the highway, and I floored it to get to 65 MPH really quickly so the people behind me didn't need to stop. After I did that, I smelt a horrible burning/rubbery smell in the cab, I also heard some clicking, like plastic BB's in a...
  5. R

    ECU tuning

    Hello, I don't know if this is the correct place to put this but I'm trying to get into the ECU tuning business as a hobby. I can't find much about how to do it on the internet, so I came to you all to ask you some questions. -Can you remap your ECU through the OBD port? -How expensive will...
  6. R

    Check engine light!

    Hey guys, I have a 1998 GMC Yukon and my check engine light came on AGAIN! The first time it came on, me and my dad looked at it (my dad knows a lot about these trucks). He decided upon back pressure. We took it to autozone, and nothing came up, so they cleared it. So today I was driving and it...
  7. R

    Fuel

    Does a fuel injected motor use more fuel than a throttle body motor? rAiN Twist - YouTube
  8. R

    Truck backfire

    Back again, my brothers truck (5.7l v8 vortec 350) is backfiring hard, and he went to turn, and when he was about to hit the gas the truck died. He said it took about 5 minutes to start. Does that sound like a valve problem, or what do you guys think? rAiN Twist - YouTube
  9. R

    Fuel injector fuel consumption

    Hey guys, I have a 1998 GMC Yukon, and in trying to figure out how much fuel is injected into the manifold per rotation. Can someone help me out? rAiN Twist - YouTube
  10. R

    Truck is slow

    Hey guys, Got at 1998 GMC Yukon with 192k miles. Everything is stock, and a lot of things on it are new. It's pretty slow on the low end. Do you guys know any solutions besides a full tune that would wake it up a little? rAiN Twist - YouTube
  11. R

    Speaker help

    Hey guys, I have a 1998 GMC Yukon, and I thought I would change my front 2 speakers. So I went out and bought a set of Soundstream SC-6T 6 and a halves, 80 W RMS. It came with 2 crossovers because it also came with tweeters. So I go ahead and pull the door panel off, and I put the stock tweeter...
  12. R

    GMC Yukon Mods

    Leave your cool GMC Yukon/Tahoe mods below. rAiN Twist - YouTube
  13. R

    Power Mode RPM

    Hey all, I have a 1998 GMC Yukon. Does anyone know what RPM the "Power Mode" switches on in the computer? I don't know the specific term for "Power Mode", but does anyone know what RPM the engine starts dumping fuel? rAiN Twist - YouTube
  14. R

    Gas smell in cab!

    Hey all, I'm on this forum a lot, so why not ask you guys since this is one thing I can't find on the Internet. I have a 1998 GMC Yukon, and I randomly once in a while (mostly in the city) I'll be driving and I smell a horrible strong gas smell in the cab. I think it might be the AC, because...

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