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  1. 2015TahoePPV

    2001 Tahoe 4wd theory

    thanks for the input!
  2. 2015TahoePPV

    2001 Tahoe 4wd theory

    Is there a servo/ actuator of some sort on the front diff? Assuming it gets power from the transfer case?
  3. 2015TahoePPV

    2001 Tahoe 4wd theory

    Interesting. That would be the easiest solution. Is there anything going on at the front axle as far as engaging the “hubs” or does it all happen at the transfer case?
  4. 2015TahoePPV

    2001 Tahoe 4wd theory

    Thanks for the input everyone. My son and I are dropping a K5 Blazer body onto a 2000-2006 Tahoe chassis. I’m going back and forth between customizing the heck out of the wiring and ancillary systems, or just using all of the Tahoe wiring/ components and going with a custom “retro” type dash...
  5. 2015TahoePPV

    2001 Tahoe 4wd theory

    Is there anything that happens with the front hubs/ differential? I’m wondering what “tells” the transfer case and front axle to lock everything in 4wd.
  6. 2015TahoePPV

    2001 Tahoe 4wd theory

    I’m wanting to be able to select 4Hi or 4LO and have the system work as designed. I think “auto” would rely on the ABS computer, which I wasn’t planning to keep. I messaged Painless wiring also.
  7. 2015TahoePPV

    2001 Tahoe 4wd theory

    I’m looking at using a 2001 Tahoe as the basis for a project. Does anyone know off the top of their heads what happens when you push the “4wd” button? I used to have a 2002, but I don’t recall if it had a BCM or any other annoying computers like the newer ones do. What I’m trying to do...
  8. 2015TahoePPV

    p0128 Engine temp below thermostat temperature/ strange O2 sensor values

    I’d go ahead and replace that sensor just for peace of mind. At least now you know what to look for.
  9. 2015TahoePPV

    p0128 Engine temp below thermostat temperature/ strange O2 sensor values

    was the old thermostat actually stuck open? I’m still having a hard time imagining GM designing a cooling so efficient that the engine won’t reach operating temperature if the thermostat is stuck open. GM is famous for underengineering things, and I’ve been wrenching on them for over 40 years...
  10. 2015TahoePPV

    p0128 Engine temp below thermostat temperature/ strange O2 sensor values

    I can’t fathom the thermostat sticking “open” causing the engine to never get to temperature. I think it would get there eventually. In my case, the gauge was showing no movement whatsoever, and I drive 75-80 for half an hour each way to work. I also had hot heat in the cab, so I’m confident...
  11. 2015TahoePPV

    Considering buying a 2017 Tahoe Lt--need input from 4th gen owners

    don’t rule out a PPV if the braking and handling on the civilian models is too soft for you. You can always bolt a third row seat in if needed.
  12. 2015TahoePPV

    PPV and SSV - AFM and DFM

    My 2015 has 174K on it now (I bought it with 120-something) and I’m not having any indication that the AFM system is in distress. I can feel it engage/ disengage on the highway. I don’t think I’d spend the money to tear into this engine to replace them, I’d probably build up a lower mile unit...
  13. 2015TahoePPV

    DIY Video for coolant temp sensor/ thermostat/ serpentine belts

    Here’s a couple of DIYs that make things a little simpler before you dive in:
  14. 2015TahoePPV

    What’s wrong with my 2015 Tahoe?

    The fans running constantly and that code are a sure sign of the Coolant Temp Sensor. Do the thermostat at the same time, its about $60 worth of parts:
  15. 2015TahoePPV

    question on steering wheels and clusters

    Thanks for the reply. WAMS really likes the Denali Clusters, apparently they’re pretty easy to program compared to the others. I’ll send them this ’18 PPV one and see what happens.
  16. 2015TahoePPV

    '15 Tahoe PPV

    Comes up between the seats, hopefully the th is still intact.
  17. 2015TahoePPV

    question on steering wheels and clusters

    Since the 2018-newer PPVs all have the radio controls/ cluster control buttons as standard, is it possible to put a 2018 cluster in my 2015? I've already added the steering wheel, and the LIN bus circuit from harness dr. (didn't fix the cruise control lights by the way) and the clockspring as...
  18. 2015TahoePPV

    Retired 2019 PPV Tahoe. Rear windows inoperable

    I'm in the same boat. My 2015 was a K9 truck, so they had butchered the wiring in the rear doors to splice in a remote setup so they could lower the windows if the dog got too hot. I fixed the wiring back to factory, installed rear door panels, etc. I exhausted this with a former GM...
  19. 2015TahoePPV

    2016 PPV Speaker Issues

    I would guess the high beams were cut for wig wags at the connectors under the hood. That's where I'd start. I'm glad I was able to help you with the horn! With the issues you've had, it would probably be worth pulling off the front bumper cover and removing the headlights. You're probably...
  20. 2015TahoePPV

    io3 upgrade

    I'd love to know myself. I'm going on the assumption at the moment that the resistor network triggers a digital signal from the LIN data bus that tells the radio control interface what to do. I'm also assuming that the cluster's with the knob on the front of them don't include the circuitry...
  21. 2015TahoePPV

    2016 PPV Speaker Issues

    the horn is likely the 6J4 circuit in the center console area upfitter harness. Its a single pair wire that is supposed to loop back on itself. They cut it and run a rocker so they can select either the horn or the HORN (aftermarket). Here's a thread that should be helpful...
  22. 2015TahoePPV

    io3 upgrade

    Don't expect the aftermarket interface to "see" the "resistor network" of the steering wheel buttons. I'm going down that rabbit hole at the moment with an Alpine head unit and idatalink Maestro interface on my '15 PPV.
  23. 2015TahoePPV

    steering wheel / clockspring wiring diagram

    Just an update. I changed the clockspring as was suggested, but that hasn't restored the lights to my cruise swith, and the RH cluster control buttons don't light either. So far I've added the Harness Dr. LIN bus circuit and an idatalink Maestro controller for my Alpine stereo. The Maestro...
  24. 2015TahoePPV

    steering wheel / clockspring wiring diagram

    Thanks! I have been to that site dozens of times, but never went up one level to find the 'regular' Tahoe, just the PPV book. Thanks again!
  25. 2015TahoePPV

    steering wheel / clockspring wiring diagram

    is there a specific chapter you're referring to that would be helpful?

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