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  1. J

    Superchips settings

    Anyone have good transmission settings for flashpaq f5 on a 03 Yukon xl 1500? I want quick shifts but want them to not be too harsh, the superchips value on the line pressure makes it shift fairly harsh
  2. J

    Normal oil pressure for 03 l59

    So I’ve had a few 5.3s of the same era, was just curious what is normal hot idle oil pressure I have a 03 Yukon with the l59 and getting 30-32 psi oil pressure at hot idle, 174k miles
  3. J

    03 Yukon xl 1500 (vin z) stutters around 4k rpm and randomly shuts off

    Have code p1518 and p0178, just replaced tac module. I was changing the radio and it already had an aftermarket interface harness to retain Bose and instant, I got ahold of myself and cut the aftermarket harness while it was plugged into the factory harness, I don’t know if it’s related or not...

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