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4L80E tcc solenoid question

Discussion in 'All Other Transmissions' started by Rune Noraberg, May 23, 2018.

  1. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
    Hi, i just purchased a 1994 silverado 6.5td.
    The transmission allmost allways go into limp. I blink tested the obd contact and got a code 32 tcc solenoid.
    I measured the resistance on the solenoid wich was 1.8ohms, is this too low?
     
  2. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
  3. MrMarty51

    MrMarty51 Well-Known Member

    1,283
    1,161
    Aug 1, 2017
    Miles City, Montana
    I dont know about the resistance to the solenoid, Just stepping into say welcome to the truck stop forum.
    People with a lot more knowledge than I will step in and give You the information.
     
  4. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
    Thank you, sure looks like the place to ask:shame:
     
    MrMarty51 likes this.
  5. Jaryd

    Jaryd Oh the sound a 6.5 makes

    719
    915
    Nov 27, 2016
    Hodges, SC
    MrMarty51 likes this.
  6. THEFERMANATOR

    THEFERMANATOR FRANKENBURBAN Staff Member Lead Moderator

    9,007
    2,370
    May 9, 2008
    ZEPHYRHILLS FL
    Code 83 means the tcm has detected a voltage error in the tcc circuit. I looked and what I could find says 8-12 ohmsfor the tcc solenoid, so it looks like yours is done. I would strongly reccomend sticking with oem ac delco parts for this job.
     
    MrMarty51 and smokymtn65 like this.
  7. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
    Replaced the solenoid now with a new one measuring 11ohms, still only r-1-2.

    Addidtional info:
    Trans is sometimes hard to get into reverse, makes some awful scratching sounds and suddenly jumps into rev.
    Sometimes when putting the trans into OD on the shifter it tries to shift to 4th maybe? even when trans is in limp, also making baaad sounds and just ends up dropping out of gear completely, like putting a manual into neutral.

    Will go out and read codes again now, updating.
     
    MrMarty51 likes this.
  8. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
    Error codes:
    32
    33
    39
    83
    85
    87

    f*** me...

    The two ratio codes could be from the first run with new fluid i think.
     
  9. MrMarty51

    MrMarty51 Well-Known Member

    1,283
    1,161
    Aug 1, 2017
    Miles City, Montana
    From the description of the sound of the trans, I do not think I`d even try to rebuild that one, unless the case is very closely inspected.
     
  10. Rune Noraberg

    Rune Noraberg New Member

    6
    2
    May 23, 2018
    Norway
    For some odd reason it decided to work in all gears 1-OD today...

    But now reverse rarely works and i have to put the gear lever in D to go anywhere and later shift to OD.
     
  11. NVW

    NVW Well-Known Member

    8,706
    1,325
    May 5, 2008
    Castor, AB.
  12. THEFERMANATOR

    THEFERMANATOR FRANKENBURBAN Staff Member Lead Moderator

    9,007
    2,370
    May 9, 2008
    ZEPHYRHILLS FL
    If its making noise, then thats internal. Electrical isn't going to make a grinding sound.
     

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