Thread: 4T60E Lazy Shifts

Results 1 to 4 of 4
  1. #1 4T60E Lazy Shifts 
    GTP Level Member Impala131's Avatar
    Join Date
    Feb 2012
    Location
    Knoxville, TN
    Posts
    709
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Chats
    3244
    I have a 1997 Buick Lesabre (Factory L36 motor, 4T60E trans) with just under 140,000 miles.

    For the most part, the transmission behaves fine, but the shift time for the 1-2 shift takes several seconds to complete. Once it completes, it seems to engage firmly. The 2-3 is a bit slow as well, but the 3-4 shifts are perfectly fine. Downshifts are fine too. Other than that, no issues that I can notice. No transmission codes or converter lockup issues either. The first couple shifts while gently accelerating are just very slow and I am concerned with accelerated wear from clutch slipping.

    Started with standard fluid and filter drop, magnet looked fairly clean. Took apart filter, usual metal specs but not bad. Used Dex 3 compatible fluid to replace pan drop loss. No change in shift quality there.
    Replaced OEM vacuum modulator with aftermarket adjustable modulator, modulator is adjusted to firmest setting (screw fully turned clockwise) and still no difference.

    Next step I'm thinking is a mild shift kit... I've used the transgo kit for the 65E with great results before. Will changing to stiffer accumulator piston springs give me similar results on the 60E? Transgo's 4T60E "Jr." kit doesn't look even remotely similar to what I am familiar with, so I am a bit lost.... if anyone can give me some direction on this issue, I would really appreciate it.
    2003 Grand Prix GTP.... the journey begins again....
    E85 Self Tune with HPT, 80# Injectors, Gen V 3.4 pulley, SD Headers, AL605 Plugs
    Reply With Quote  
     

  2. #2 Re: 4T60E Lazy Shifts 
    Turbo is the way to go. BillBoost37's Avatar
    Join Date
    Jul 2009
    Location
    W Spfld
    Posts
    26,833
    Thanks (Received)
    53
    Likes (Received)
    90
    Dislikes (Received)
    1
    Chats
    98246
    The 60 is different in this area. You don't just drop the accumulator to do a shift kit in it. You would need to work in the valve body, most don't want to yank the trans to install a shift kit.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
    Reply With Quote  
     

  3. #3 Re: 4T60E Lazy Shifts 
    GTP Level Member Impala131's Avatar
    Join Date
    Feb 2012
    Location
    Knoxville, TN
    Posts
    709
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Chats
    3244
    Thanks Bill, that's what I needed to know. Short of pulling the transmission, are there any other improvements I can make?
    2003 Grand Prix GTP.... the journey begins again....
    E85 Self Tune with HPT, 80# Injectors, Gen V 3.4 pulley, SD Headers, AL605 Plugs
    Reply With Quote  
     

  4. #4 Re: 4T60E Lazy Shifts 
    Donating Users EHB's Avatar
    Join Date
    Dec 2014
    Location
    Maryland
    Posts
    843
    Thanks (Received)
    0
    Likes (Received)
    1
    Dislikes (Received)
    0
    Chats
    4291
    i had the same problem. i threw a bottle of lucas transmission fix stops slips in it and it really seemed to help.
    2000 GTP - 3" Catted DP...ZZP Plog...9" Cone filter...Reptile pcm...3.4 pulley...AL104's
    Reply With Quote  
     

Similar Threads

  1. Lazy early shifts
    By Prixer97 in forum PCM Tuning
    Replies: 2
    Last Post: 03-19-2014, 12:49 AM
  2. Lazy shifting
    By savage93 in forum 1997-2007 4 speed Automatic (4T65E) (4T65E-HD)
    Replies: 22
    Last Post: 11-05-2013, 10:25 PM
  3. To Lazy
    By Hidenface in forum Introductions/Noob Questions
    Replies: 10
    Last Post: 11-02-2012, 07:04 PM
  4. Lazy Boost
    By SDGTP99 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 18
    Last Post: 03-23-2011, 08:35 PM
  5. Greetings from The Lazy R !!!
    By thelazyr in forum Introductions/Noob Questions
    Replies: 0
    Last Post: 08-27-2010, 06:21 PM
Bookmarks
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
  •