Recent content by jwth

  1. J

    Burning oil

    rotten egg smell is sometime caused by tje moxture being too lean. The cold air intake will chamge yhr moxture due to less restrictions and the engine tine might nerd to be modified for that
  2. J

    Burning oil

    pull the number 5 plug and take s look at it. if it has been burninh oil it might be just worn valve stem guide seal which would foul the plug. If the plug is clean it may have an injector not firing or clogged up, may run thru oil pushing a dead cylinder. switching to a heavier weight oil might...
  3. J

    A little help with my son’s 2003 Tahoe

    is it possible that there is a problem under or at the fuse block? Might have to lift the upper half of the fuse assembley from the mating half under the hood and look for corrosion or some burn indications that would not show on top with the fuses, just a thought.
  4. J

    My 2004 Yukon started itself when I connected the battery cables, no key in ignition.

    This happened to me on my 2003 yukon. I ended up changing the ecu after a lot of checking and chasing. gremlins!
  5. 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.
  6. 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...
  7. J

    Milage Helper Maybe

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

    Milage Helper Maybe

    sorry the site wont let me upload a hpt file let me upload to mega and pass the download along
  9. 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.
  10. 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.
  11. 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
  12. J

    A/C button not engaging to relay. help?

    it would help to know what year
  13. 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
  14. 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
  15. J

    Tech2win/vxdiag diagnostics software questions.

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