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  1. H

    Surge, RPM Fluctuation, No Codes

    Just an update: After cleaning the throttle plate, the truck hasn't stalled again. I did just have my catch can come in, and plan on installing sometime soon. As of right now I am going to call this issue resolved. Thanks for all of your input guys.
  2. H

    Surge, RPM Fluctuation, No Codes

    I am still around the 3-5% area.
  3. H

    Surge, RPM Fluctuation, No Codes

    Would that be a failing PCV that needs to be replaced or does it just need a catch can? Edit: If this thing even has a PCV valve. I assumed it did because my other truck has one, but I dont see a valve listed online. Just a hose that connects the PCV to the intake.
  4. H

    Surge, RPM Fluctuation, No Codes

    Okay no stalling today. I did clean the throttle plate again. Checked the terminals, looked for shorts, and cleaned the MAF, and got 60 PSI at the rail. I still have plug wires and tuff to check. She is running better. The throttle plate was pretty bad. Which leads me to my second question...
  5. H

    Surge, RPM Fluctuation, No Codes

    Update: Truck turned on fine and drove fine for about a mile. I was braking going into a turn lane and the engine just stalled. All accessories were still running fine. No codes, no revving or anything. Will see if i can pull TCM codes.
  6. H

    Surge, RPM Fluctuation, No Codes

    Haha! I hear you. I appreciate the offer, but I am a pretty good haul away from the Treasure Coast area.
  7. H

    Surge, RPM Fluctuation, No Codes

    Funny enough, I have done almost all of that about 2 months ago except plug wires. I was doing just some routine maintenance and trying to get rid of the rough idle. Then about a month ago I had to get the transfer case replaced. The bushing for the input shaft went bad leaked all the fluid out...
  8. H

    Surge, RPM Fluctuation, No Codes

    No codes that my tuner would pick up or event history. Its usually pretty good about logging events and picking up codes. I had to get to work so I didn't have much time to troubleshoot. After work I can try a different scan tool and see if that has any luck. Florida actually, I should have...
  9. H

    Service Stabilitrak/Service Traction Control & Service Brakes

    I know it is an old thread, but I figured I would just update this to include the resolutions. The ABS light was due to my right rear brake locking up. The Service Brakes soon light was a vacuum leak on the brake booster. Eventually the booster failed completely and upon replacing that the...
  10. H

    Surge, RPM Fluctuation, No Codes

    2011 Yukon Denali XL 1500 6.2L Today was a colder and wetter morning than usual in my area. I remote started my truck to let it warm up for a bit before I got into the truck. About 5 minutes later I got in, turned the key and was off on my way. About 1/4 mile in @25 mph, the truck started...
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    Steering Wheel Position Sensor

    Hello All, I was having the "Traction Control Off " , "Service Stabilitrack" and "Service Brakes Soon" messages display on my truck. I noticed that this occurred anytime I turned my wheel directly after start up. If I drove in a straight line it would not happen. After some digging on the...
  12. H

    Service Stabilitrak/Service Traction Control & Service Brakes

    Hey Guys, I have a 2011 Yukon XL 1500 Denali 6.2L with 165k on it. I have the Diablo Trinity EX tuner hooked into it to be able to read engine diagnostics and error codes. A while back it threw a code for the TPS sensor which I replaced and I haven't seen the code thrown again. However, over...
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    Yukon XL Tuning Questions

    I have a 2011 Yukon XL Denali with the 6.2L in it. I recently bought the Trinity T2 EX. I plan on running the Diablo Tune for the ECM and Firm Shift Tune for the TCM. For the tune I have the option to turn off torque management, skip shift (Which from what I read doesn't seem to apply to my...
  14. H

    Autoride Compressor Turns On

    So I am the new owner of a 2011 Yukon XL Denali. I noticed the autoride compressor turns on when i turn the car on. This is normal from what I have read. However with no changes to the load on the truck the compressor kicks on from time to time. From what I have read this could indicate leak in...

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