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  1. jeffm333

    Adding Factory Style Auxiliary Trans Cooler Lines - Tru Cool 40K Install

    @Doubeleive @Geotrash or anyone else that’s done this: Can you verify the flow direction through the trans cooler in the factor/original cooler in the radiator? Does it flow from transmission, to bottom connector in the radiator, then out of the top connector back to the transmission? Thus...
  2. jeffm333

    Adding Factory Style Auxiliary Trans Cooler Lines - Tru Cool 40K Install

    Doubelieve - sorry for beating this to death but I want to be sure I get everything I need and I’m still not clear on one part - don’t you need an additional “male” end which has the factory quick-connect to connect to the output connection on the factory radiator/cooler? This is what the tech...
  3. jeffm333

    Adding Factory Style Auxiliary Trans Cooler Lines - Tru Cool 40K Install

    I’m in this process now as well on a 2013 Suburban…. What solution did you end up using?
  4. jeffm333

    2013 Z71 Suburban additional transmission cooler

    Working with the shop now to put them in series as everyone has outlined (and how I thought it would originally be done), and we have a snag: They have said (and showed me) that the inlet connector on the 2013 SUburban radiator isn't the same type fitting we got ind n the cooler kit or that...
  5. jeffm333

    2013 Z71 Suburban additional transmission cooler

    Just had the transmission replaced in this truck and opted to have them install an additional transmission cooler. I believe it is a “supercool” branded cooler but looking at the receipt from the work it is not specified. Upon first driving it, after a 25-30 minute drive the trans temp was...
  6. jeffm333

    2013 Z71 Suburban for Overlanding - tire/suspension input request

    @Doubeleive - that one in the car gurus ad is indeed sexy…. Would have like to have seen it 6 months ago when I was originally shopping. :) Although building them out is half the fun right? (Arguably the other half that isn’t fun is pure pain :) )
  7. jeffm333

    2013 Z71 Suburban for Overlanding - tire/suspension input request

    This is perfect concise input - thank you very much. This being a z71 model… any idea how the mood 80069 I’m the rears compare to the z71 rear springs? Aftermarket bumpers, winch, and removing the factory step rails also potential future endeavors… I figure the step rails might come off...
  8. jeffm333

    2013 Z71 Suburban for Overlanding - tire/suspension input request

    This winter I picked up a 2013 z71 Suburban to outfit as an Overlanding and long distance/duration road trip vehicle. I have the interior, solar, sleeping and storage platforms, cabinetry, fridge, house batteries, shore power/inverter setup complete and have been doing some light traveling...
  9. jeffm333

    OBDII Port completely dead - which control module presents this interface?

    2013 Suburban Z71. OBDII port completely dead - won't power on generic scan tools. VXCNano is ordered, but I'm expecting it to also see nothing as the port appears completely dead, regardless of the key position in the ignition switch. I thought that the Body Control Module (BCM) would be the...
  10. jeffm333

    Diagnostic and Programming tool research - anyone use the Mongoose cable from drewtech / opusvis?

    Looking at diagnostic/programming tools for 2013 Suburban Z71. I've neen researching the clone options for MDI, MDI2, Tech2 devices, and all the associated software. VXDIAG's VXC Nano seems to have had some people that have had success here, and some folks have some youtube videos out...
  11. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    This thread looks more like a "how to" for installing a secondary battery than a plea for input on a potentially fried BCM/ECM or other weird short.... for any moderators reading about my disaster, if this would also be useful in a "how to" section somewhere, feel free to copy there, or let me...
  12. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    Continuing... Post #3 with images: Zoomed shot of the 200A circuit breaker between the alternator and the auxiliary battery isolator and other components. This protects the alternator and the factory electrical system components in the event there is some unexpected short in any of the...
  13. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    Continuing with images.... Hall effect current sensor feeding ECM information (which must be preserved in the auxilliary battery setup, and all battery-charging current needs to flow through the same ground as discussed earlier): New 1/0 AWG engine ground connection: On the drivers side of...
  14. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    As requested, some images with annotations from the install. Some things are not fully connected in the images, and a number of finishing-tasks won't be completed until the truck is working and the auxiliary battery system tests successfully (Things like completing wire-ties and organizing...
  15. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    INCREDIBLE train wreck indeed. With no instrument cluster and no ignition response with the key, driving it to a shop or dealer for help isn't even an easy option. I'll send a few pics of crude sketches/wiring-diagrams of the fundamental design of the system, give some background on my...
  16. jeffm333

    Complex Electrical Nightmare - BCM? ECM? Short?

    Posting in "general discussion", wasn't sure if ECM/BCM complex electrical system issues should be in "Audio and Electronics" or somewhere else? I have found myself in quite the pickle... I've already done quite a bit of troubleshooting and I will try to outline everything pertinent plus the...
  17. jeffm333

    No engine light, old codes P0700 P0741 P0742, transmission seems to shift perfectly smooth, no shuddering??? 2013 Suburban Z71

    No engine light, old codes P0700 P0741 P0742, transmission seems to shift perfectly smooth, no shuddering… any thoughts? Full details below: I have been shopping for months for a 2011-2015 z71 suburban or tahoe; preferring the suburban. Finally found one that is a southern-based truck with a...
  18. jeffm333

    2002 Z71: Time for new shocks - seeking input on lift options

    The jounce stops are very raggedy and the shocks are quite ready to be replaced, so while doing this (or having it done) I have been exploring options for getting a little bit of lift to maybe fit slightly larger tires in the future and get just a little more clearance so I can stop ripping off...
  19. jeffm333

    First post! 2002 z71, original owner, modified to be my road-life-warrior vehicle

    Enough for now... I did find a handful of pics from the recent build I will hav eto organize and resize to be able to post. If anyone has special interest in a specific aspect of what I've done (battery system, electrical, platform, console, etc) I can start a thread just on that. Oh, also...
  20. jeffm333

    First post! 2002 z71, original owner, modified to be my road-life-warrior vehicle

    And a little more.... Pic snapped today. I have others that will show the console and fridge better I can find and post later; this shows the cheesy but super-soft and extra insulation-providing fake badger fur covering that I keep over the fridge and the rear part of the custom console...
  21. jeffm333

    First post! 2002 z71, original owner, modified to be my road-life-warrior vehicle

    Pics you say? :) Not sure if this is the best spot or better to start another thread for Tahoe-overlanders... but I snapped a couple today (forgive the dust I've mostly been out on the road since February)... and found a couple from the last build effort. Keep in mind this has been an...
  22. jeffm333

    First post! 2002 z71, original owner, modified to be my road-life-warrior vehicle

    Greetings! Over the last ~19 years I've read bits and pieces from this and other forums whenever I needed help with anything on my 2002 Z71. ~285k miles. Original engine, original transmission, original owner. Over the last decade plus it has been a secondary vehicle that I mostly use for...

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