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Thread: TCC applies over 5 mph

  1. #1
    Tuner
    Join Date
    Jan 2019
    Location
    North Carolina
    Posts
    61

    TCC applies over 5 mph

    This might need to go in the transmission forum and if it needs to be move let me know. I have a 99 suburban I put a 6.0 ls in. I kept the original trans in the truck. The pcm has an 02 2500 chevrolet tune that i have been editing. The first thing i did was a segment swap for an 02 4l60e out of an 02 silverado 1500. So the trans is a 99 suburban 4l60e and the tune is an 02 4l60e. The wiring I am 90% sure is correct. The harness I used was from a 1500 and the plug for the trans had 13 wires which should be a 4l60e because if it was a 4l80e it would have only had 11. I wired my original tcc solenoid control to the Red42 pin and the TCC brake switch signal to the Blue 33 the TCC PWM solenoid control to Red 2. Attached is my log and my tune, any help is appreciated as this is driving me crazy.
    Attached Files Attached Files

  2. #2
    Tuner
    Join Date
    Jan 2019
    Location
    North Carolina
    Posts
    61
    So for anyone who has this issue in the future, there are 2 channels to log, one is TCC applied and TCC MODE. The TCC MODE is the one that logs the on and off.