Results 1 to 3 of 3

4L60 guru's..... in here

This is a discussion on 4L60 guru's..... in here within the Automatic Transmission forums, part of the Drivetrain category; A 97 4wd Tahoe, throwing P0785 only. (Shift/Timing Solenoid Malfunction) Throws it within 10 secs of startup, even after clearing ...

  1. #1
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
    Join Date
    Sep 2005
    Location
    TEXAS... U mad?
    Posts
    6,158

    Black / Stryker Blue
    2K WS.6/ 2K9 G8GT

    4L60 guru's..... in here

    A 97 4wd Tahoe, throwing P0785 only. (Shift/Timing Solenoid Malfunction)
    Throws it within 10 secs of startup, even after clearing it, and wont shift from 3rd.

    First time I cleared it, it shifted fine for a few miles. Thru all 4, passing gear, everything. But now, you can clear it, and within 10 secs of startup, even if you don't take it out of park, it throws it....

    When it does, it won't even manually shift.

    I'm reading alot about Ign Swi/ PCM failures, but most all say it should be throwing more codes also, and the cluster should be failing intermittently....



    Could it simply be the solenoid??? If so, why would it shift normally after cleared... And how could the PCM know it was bad before you ever take it out of park???????

  2. #2
    Moderator Cutlass's Avatar
    Join Date
    Apr 2008
    Location
    Madison, WI
    Posts
    6,998

    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    The PCM is constantly checking for feedback from that solenoid, therefore it can set at anytime. I don't think your problem relates the ignition switch because that usually causes a bunch of other trans codes to store.
    Usually this code relates to the 3-2 shift solenoid itself or the wiring to/from it. best bet is to pull the pan, check the wiring inside the trans, and replace the 3-2 shift solenoid. You could also do a quicky inspection of the wiring external to the trans for obvious burns/chaffing/broken wiring

  3. #3
    Junior Member
    Join Date
    Mar 2011
    Location
    Germany
    Age
    46
    Posts
    3

    Met blue
    1999 Trans Am Convertable

    Gent's,

    I have the same problem as this and wonder before I take my car to the garage if your advice solved the problem, i.e. changing the solenoid?

    Thanks

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 4l60 on a LS1?
    By yosteff in forum Automatic Transmission
    Replies: 4
    Last Post: 03-26-2009, 12:44 PM
  2. 4L60 transbrake
    By dfillmore827 in forum Automatic Transmission
    Replies: 2
    Last Post: 12-24-2008, 01:34 PM
  3. 4l60 went kaboom!!!!
    By 94lt1ss in forum LT1
    Replies: 8
    Last Post: 01-03-2008, 04:51 PM
  4. 4L60 Rebuild...?
    By Doric in forum Rocky Mountain Members
    Replies: 0
    Last Post: 07-05-2006, 10:49 AM
  5. Looking for LT-1 & 4L60
    By mrosenfield in forum Parts Wanted / Trade
    Replies: 3
    Last Post: 12-09-2005, 02:11 AM

Bookmarks

Posting Permissions

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