Page 3 of 3 FirstFirst 123
Results 21 to 27 of 27

Thread: Does the 12200411 PCM have Tow/Haul Capabilities?

  1. #21
    Lifetime Member blindawg's Avatar
    Join Date
    Sep 2010
    Posts
    212

    Default

    But it already holds second gear?

  2. #22
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Then you don't really need the switch.

    The applications where the shift lever holds manual 2nd did not come with a manual mode switch.

  3. #23
    Lifetime Member ChipsByAl's Avatar
    Join Date
    Feb 2006
    Posts
    617

    Default

    The 2001 Envoy had a tow/haul switch.
    "Tow/haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the powertrain control module (PCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul mode and returns the transmission to a normal shift pattern."

    On the 411 PCM, you can enable Performance mode with D0409 as well. You won't have any info in the cluster alerting you though.
    Al
    "Trash that carb and get Injected!"

  4. #24
    Lifetime Member blindawg's Avatar
    Join Date
    Sep 2010
    Posts
    212

    Default

    aaahhhh.... ok, i was pretty dang confused. thanks joecar.

    and the tow/haul would use the performance tables?

    Thanks,
    Branden

  5. #25
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    Yes, tow/haul uses the Performance tables.

  6. #26
    Lifetime Member blindawg's Avatar
    Join Date
    Sep 2010
    Posts
    212

    Default

    i understand it all now. thank you very much sir.

    Branden

  7. #27
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    No worries...

Page 3 of 3 FirstFirst 123

Similar Threads

  1. 12200411 Injectors 50#
    By GMjohn in forum Gen III V8 Specific
    Replies: 6
    Last Post: March 7th, 2008, 06:03 PM
  2. V2 Capabilities out of the box?
    By Cougar281 in forum FlashScan V2
    Replies: 36
    Last Post: January 15th, 2007, 11:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •