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  1. DaveO9

    Cold Air Intake for the most power??

    I'll add my $0.02. 100% agree that we already have CAI on our trucks and that it's a pretty good system as-is. But slight advantages in getting rid of the accordion flex tube and all the resonators, if only for looks/sound/clean up engine bay. On my '09, I added the Airaid MIT as some have...
  2. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    https://a.co/d/gCB6GM4 Dorman 918-213. I bought mine on RA, cheaper there, even with shipping. And for sure, I will post pics of install to this thread. Might be a couple weeks out.
  3. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    All my parts on order for a factory style trans cooler, including cooler, line set from trans to rad/cooler, line from rad to cooler, and clip to hold the lines below the cooler. everything is genuine GM except the cooler itself. I went with a Dorman unit for that - couldn't justify the almost...
  4. DaveO9

    Axle ratio to tire size input needed

    I'm looking at a 3.08 to 3.42 or (more likely) 3.73 conversion myself. But I'm keeping stock size tires. For the front, I'd probably just get a junkyard carrier and swap it completely. 3.73 units are available from the 07 and 08 4L60 trucks. But for the rear I will probably change ring and...
  5. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    Thanks. Yeah, I saw some other posts that made it sound like installing the lines was a real bear. Glad to hear another perspective that said it wasn't so bad. Do you have 4wd? If so did you remove the front driveshaft? Here's the part number for the GM Genuine cooler: 20880895. And I...
  6. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    Thanks. Yeah I’m starting to understand about the higher temps allowed with Dex VI. I’ve pretty much decided to go with an OEM retrofit cooler now. Looking at options for the cooler itself and the new line I’ll need between it and rad. Not sure if I’ll do the full line replacement or do some...
  7. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    I purchased a tru-cool a while back but then returned it. I had the same concern others on here have had regarding how much of the radiator it covers up and possible degradation of engine cooling. Have you noticed any issues with that with your installs?
  8. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    No. I just have the radiator cooling. Do you recommend doing the retrofit of an OEM cooler over a Derale? My '09 Tahoe had the factory cooler, and although I didn't tow much, it didn't seem to do a stellar job of keeping the trans cool. It would go over 200 on mountain passes w/o towing and...
  9. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    Perfect, thanks. I was pretty sure the Amazon configurator was bogus, it was just weird that some said they fit, others didn't. I downloaded the Derale .pdf full catalog, that helps too. I also found a configurator on their website, which actually recommended the 13950 for my '13 5.3 Tahoe...
  10. DaveO9

    Ready to pull trigger on Derale trans cooler - need advice

    I'm a little overwhelmed with all the different Derale options. And their website is not super helpful to gain understanding of nuances between model numbers. I've seen many instances of users here, including @Geotrash, using the 13960 kit. Amazon gives me a Does Not Fit warning with that...
  11. DaveO9

    Front suspension rebuild - a couple questions

    I'm doing all four front control arms, new struts, and sway bar links/bushings. Done with driver's side, passenger side to go. For the control arms, I'm using Delphi for all four. Looks like the same castings as my original, just about every ridge and casting mark identical. Quality seems...
  12. DaveO9

    Tech 2 scanner vs Autel

    Pretty sure that's where I bought mine in the last six months or so. Turned out alright for me so far. Quality is OK. I'm guessing all these Chinese clones are pretty much identical to each other anyway. I got mine quickly, not much more than a week. The only problem I've had is the...
  13. DaveO9

    Ball Joint Replacement

    I’ve got all four CAs (Delphi, from RA) sitting in my shop right now, waiting for me to have the time to replace them. Going to do sway bar end links at same time, and trying to decide if I want to do struts too.
  14. DaveO9

    SOLVED: Troubleshooting 2013 rear park assist

    Middle left. Numbered from left to right, #1 is outer drivers side
  15. DaveO9

    NNBS Swap out single speed T-case for two speed

    If anyone is contemplating this swap, this thread has more info than mine. I read through it multiple times.
  16. DaveO9

    NNBS Swap out single speed T-case for two speed

    I finally did this swap. Bought all the stuff months ago: eBay for the correct OEM dash knob and TCCM, LKQ for a 2-speed T-case with around 120K miles. Mechanically the swap was no problem - everything came apart and went back together fine. My second t-case swap in one of these rigs (my...
  17. DaveO9

    SOLVED: Troubleshooting 2013 rear park assist

    I bought this rig in Sept of last year and I finally have gotten rid of the ever-present "Service Park Assist" DIC message. The problem and solution were simple: one of the four original sensors was bad, and a simple replacement with an OEM sensor solved the problem. Unfortunately, I made it...
  18. DaveO9

    Tech 2 showing multiple DTCs - Related?

    Bought a new interstate (non-AGM) at Costco yesterday and put it in - I'd have liked to get the Delco, but just wanted to get it done without ordering or running around to different stores. Out the door at Costco for $130. Cold cranking speed much faster now (didn't even notice it was slower...
  19. DaveO9

    Tech 2 showing multiple DTCs - Related?

    Yup, that's probably it: Battery voltage: 11.4 Batt. open ckt. voltage: 12.45 Batt. voltage high res: 11.59 This was what it was showing tonight, key on/engine off, cold (but in my shop), hasn't been run in 24 hours. Probably will replace it after Christmas. I usually buy my batteries at...
  20. DaveO9

    Tech 2 showing multiple DTCs - Related?

    Did this test tonight. Both "State of Charge" and "Start State of Charge" are showing at 70% and it says "NO" in the "Low State of Charge" field. Still suspect a problem with the battery, or are the DIC messages coming from something else?
  21. DaveO9

    Tech 2 showing multiple DTCs - Related?

    Thanks for the tips. Good reminder to look for TSBs on the specific issues. Found this one: https://static.nhtsa.gov/odi/tsbs/2014/MC-10112024-9999.pdf Seems like it's saying to ignore the B2555 codes for the lighting circuits - I don't have courtesy lights in the door panels. And I'll take...
  22. DaveO9

    Tech 2 showing multiple DTCs - Related?

    Yeah, I was writing out that post I did wonder about it possibly being a bad ground somewhere. My guess is the troubleshooting Swathdiver is recommending will explore that possibility. Thanks. I considered that, but really a different topic. after replacing harness and sensors, I don't think...
  23. DaveO9

    Tech 2 showing multiple DTCs - Related?

    2013 Tahoe LT, 5.3. 198K miles. I've posted previously about a DIC message I repeatedly get on "Service Parking Assist." The system consistently works fine - all four sensors are triggering when appropriate, but the messages are annoying and I'm still wondering if there are underlying...
  24. DaveO9

    SOLVED: Troubleshooting 2013 rear park assist

    No, I haven't done that. I haven't done any sensor swapping yet. But I did do some additional testing this weekend. I believe all four sensors are working fine. I had engine running, trans in reverse, wheels blocked/park brake on and could get all four to trigger by lowering a piece of...
  25. DaveO9

    Most miles with stock AFM system?

    I bought my ‘13 Tahoe 5.3 in September with 197k. AFM was working 100% fine with good oil pressure, no ticking, not noticeable when engaging, etc. But I have since had it tuned out.

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