Recent content by jwth

  1. J

    Auto mode turns on 4x4 mode

    wow I feel so foolish I have driven my 2003 in auto 4x4 on the e way and in the city for 230,000 miles without replacing the front dif. not in summer unless heavy rain, but for sure from the beginning of november til may. no problems and no noises maybe I should have the dif replaced anyway.
  2. J

    AC compressor not coming on...

    I had a similar problem with my 2003 slt and took it to a shop where they replaced valves and compressor with no joy. They said they were stumped and could not fix it so no charge. I did find a youtube that showed an AMBIANT OUTSIDE AIR TEMPERATURE SWITCH located behind the right hand head light...
  3. J

    Milage Helper Maybe

    try this https://mega.nz/file/XGpBCKzC#G0vb2EkrMmHIfjnToUn6YBqJW5-J9NSxNezT09ZnR0I
  4. J

    Milage Helper Maybe

    sorry the site wont let me upload a hpt file let me upload to mega and pass the download along
  5. J

    Milage Helper Maybe

    with some tweaking of the timing table I was able to run at 26 mpg, did for awile but backed it down when the local gas mixture changed, spark knock on acceleration, using the 87 octane fuel.
  6. J

    Milage Helper Maybe

    glad to help let me know if there is a problem, I had to rename the file to upload it and I hope it will work after renaming. I seemed ok on my end.
  7. J

    A/C button not engaging to relay. help?

    there is an ambient outside air temperature sensor that fails quite often. Located behind the right hand headlight assembly little bulb thingy attached to the plastic inner cowl
  8. J

    A/C button not engaging to relay. help?

    it would help to know what year
  9. J

    HP Tuners File

    you could contact Black Bear here you have hptuners, you might do a salibration lookup on your home page for 2014 silverado 6.2 w/automatic it shoud get yo close to a stock calibration, you will need to adjust it some for your denali but it will be very close to what you need
  10. J

    Need beta testers for a bluetooth adapter for 2002-2006 GM Trucks. You can keep it when we're done!

    it has a single cd slot and holds multiple cd's similar to the pic but without the tape deck slot
  11. J

    Tech2win/vxdiag diagnostics software questions.

    Have the 3 in 1 nano and it works like a charm in windows 10
  12. J

    Need beta testers for a bluetooth adapter for 2002-2006 GM Trucks. You can keep it when we're done!

    I would be interested in trying it out and letting you know how it works. 2003 yukon slt what info do you need?
  13. J

    Real rough idle at start

    if I remember right the fuel pump needs to see a minimum oil pressure to energize maybe you need to see if there is a pressure problem or a bad sending unit not passing required minimum for fuel pump ok to run
  14. J

    Milage Helper Maybe

    sure smoothed out the VE table and increased it for performance increased the timing tables by at least 7 degrees and more at 1000 to 4000 rpm ranges, some more or less depending on vehicle performance pulled back on the knock retard tables and adders, still active just selected ranges adjusted...
  15. J

    Milage Helper Maybe

    I don't normally condone something like this since there always seems to be an ass bite back Since the Gas prices are up and so is everything else I am sharing a HP TUNERS template from my 5.3 l 2003 Yukon that has been running around 24mpg hwy and 20 or so city USE AT YOUR OWN RISK USE AT YOUR...
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