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  1. I

    PRND321 underline issue

    Troubleshooting nsbu wiring end to end was on my list of things to do this weekend. However, I hopped in it yesterday and the dam thing is back to normal. Was good again today, for now. It's been getting cold overnight here in New England lately but getting into the 70s this weekend. Can't...
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    PRND321 underline issue

    Thank you Sent from my SM-N976V using Tapatalk
  3. I

    PRND321 underline issue

    Download fails each time I tap on the pdf [emoji53]. I'm guessing tapatalk issue Sent from my SM-N976V using Tapatalk
  4. I

    PRND321 underline issue

    At first I thought this was gibberish lol, then I looked harder and separated it out Given that D321 are all messed up, I'm guessing the issue will be on "C" Sent from my SM-N976V using Tapatalk
  5. I

    PRND321 underline issue

    If the TCM C2 pinout is the same 01-05 then I can use that with the LLY Engine Controls schem. that 2004LB7 posted. All good stuff, guys, Thanks Sent from my SM-N976V using Tapatalk
  6. I

    PRND321 underline issue

    It's looks like that's the pinout for 01-04(2 plug) , which is awesome, but I need 04.5-05(single plug). Is the tcm plug pinout also different between the two? Thank you Sent from my SM-N976V using Tapatalk
  7. I

    PRND321 underline issue

    Or perhaps it goes from NSBU to ECM and I was just plain looking in the wrong spot(even though they're right next to each other). I've found mouse wiring damage under the fuse box in the past, and of course the firewall material nesting in the valley when I did the head gaskets n studs. Little...
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    PRND321 underline issue

    Side question, posted in the wrong area, did tapatalk or DF reset at some point? I've not been around much at all over the last few years, but I've far more than 20ish posts over 11 years. It's like history was deleted. Sent from my SM-N976V using Tapatalk
  9. I

    PRND321 underline issue

    It's a GM part. Where is the other end of the plug located? Does it go straight to TCM? Does someone have a schematic or can point me in the direction? Hard to meter wiring without knowing what's what. Thank you for the continued suggestions, guys Sent from my SM-N976V using Tapatalk
  10. I

    PRND321 underline issue

    I'll also add that I inspected as much wiring underneath and in the engine bay as I could. Was expecting mouse damage but didn't find anything suspect. The NSBU harness does have a sharp bend in it where it joins another loomed bundle. At this point I'm suspecting a break or partial break in a...
  11. I

    PRND321 underline issue

    Well, it's not looking like the tcm. I put my spare in today, which appears to be an '01, and that just made things worse. The only thing that would get the underline is Park. I never left the driveway to test for fear of being stranded. Shifts between PRND felt delayed and like it was confused...
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    PRND321 underline issue

    P0708 Transmission Range Sensor “A” Circuit High Sent from my SM-N976V using Tapatalk
  13. I

    PRND321 underline issue

    Yes sir, 04.5 Sent from my SM-N976V using Tapatalk
  14. I

    PRND321 underline issue

    Thanks guys. I do have another tcm that Evan had sent me years back. The one in it now bucks in the 3-4 shift under moderate to heavy throttle. The other tcm(I think he said it was from an 03) shifts beautiful but I lose elevated idle and o/d lockout which makes my tap shifter semi useless...
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    PRND321 underline issue

    Forgot to add, it has popped the p0700. I cleared it the first time, eventually it popped again and I've just left it. I've not yet been able to pull the actual code from it. I know, it would probably help here. My autocal will pull trans codes, right? It's been years since I've messed with that...
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    PRND321 underline issue

    A couple months back I noticed that my CTS was reporting the gear as Park while I was driving around. I then noticed there was no underline under Drive. Park, reverse and neutral will always have the underline. Once I shift to drive the line will stay under N for a second then disappear all...
  17. I

    LLY: Lost.

    You're probably talking about the y bridge which in stock form is two pieces. Where the horn goes into the bridge there are two o rings that are tight fit. That connection is known to blow out and leak. Also some delete tubes have a brace to help avoid that problem, some designs are better than...
  18. I

    Intercooler bushings

    You're not talking about the front body mounts are you? Sent from my SM-N920V using Tapatalk
  19. I

    3 to 4 stutter on built tranny

    I'm good to go, thank you
  20. I

    3 to 4 stutter on built tranny

    For an 03 file?
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