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    Gibson cat back or Magnaflow muffler?

    2004 Yukon Denali, want a bit more rumble, a bit deeper sound but not too crazy. I had done some research and listened to some clips and had settled on the Magnaflow 12599. However I've seen that Gibson has a full cat back (specifically, #615534) available for our trucks. Haven't been able to...
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    California Mods Questions... E-Fans and Tune?

    Hello! Searched and couldn't find anything so here I go. I have a 2004 Yukon Denali and HATE the semi truck sounding stock fans so really want to switch to electric. But I'd either need to use a thermal switch thing or use a tune to turn them on. I'd also like to try the BBP tune to control...
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    2004 Denali Climate control is only hot or cold

    Ok so my Yukon Denali climate system is strange. If I use the temp knob to adjust the temperature it actually fights me... I'll turn it up and it will go up and then back down a couple of degrees. Ok strange. The strangest part is it only seems to have 2 temperatures. Anything 89 degrees and...
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    Noise from Steering Wheel

    Hello and Happy Thanksgiving. I recently purchased a 2004 Yukon Denali and am trying to track down what this noise is. It seems to come from somewhere in the dash when I turn the steering wheel. Also seems to be worse when I first start driving and after about 40 minutes of driving is...

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