4L60E acting up - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 12-20-2010, 11:30 AM
DoubleVision's Avatar
Not Considered a Senior Member
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 43
Posts: 10,733
Wiki Edits: 0

Thanks: 19
Thanked 77 Times in 71 Posts
4L60E acting up

I have a 4L60E in a 1998 GMC pickup. The trans was rebuilt about 30,000 miles ago, a valve body kit was added at that time to fix the lockup issues it was having. Not too long ago, I got in it to leave the store I stopped at to refuel. I got in, put it in drive gave it pedal, the truck barely moved. I could tell it wasn`t in 1st gear. So I shifted it back to park, then back to drive again, same thing. I pulled the shifter down to low 1 and I felt it when it went into 1st, so I pulled off onto the road, let it wind up and went to 2nd, it shifted hard into 2nd, I wound it up more then went into 3rd, it delayed a good distance, the engine wound up to about 4000 RPM before it finally shifted, then I went into OD, it shifted into OD fine, the converter locked up
and everything seemed fine. The fluid level isn`t low, the fluids not burned or smelly, everything seems to be okay. It only did this once and hasn`t done it again. Since it`s my father`s truck and he`s up in the age, he gets into a panic over the slightest thing, so If anyone can give me a hint on why it did this I`d greatly appreciate it.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 12-23-2010, 10:58 AM
spinn's Avatar
Registered User

Last journal entry: This makes a huge difference
Last photo:
Join Date: Oct 2004
Location: here
Posts: 2,553
Wiki Edits: 0

Thanks: 14
Thanked 88 Times in 85 Posts
Why when something is wrong people rev up the engine to 4 grand ?

Sounds like the OBD could not get to closed loop tripped limp mode. The computer comtrolled adaptive shift learning maybe cycling with new performance data. The "prindle" PRNOD21 switch could be malfunctioning.

Some have picked up a intermitent error, and go limp mode, giving only 2nd and reverse. Got to closed and its was fine. Jump the connector and pull the codes. Plug 3PO into the hyperdrive unit.

My 85 C10 truck is about to get a 700R4 O/D for a Q jet engine, threads like this keep me away from overdrive technology. the 60E only needs a full throttle switch off the carb, the shifts are speedsensor, correct ? Not really sure how to complete the driveability part, without a manual shift valvebody or lock up switch.

Last edited by spinn; 12-23-2010 at 11:08 AM.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-23-2010, 02:06 PM
JeffB's Avatar
Registered User
Last photo:
Join Date: Jul 2006
Location: Phoenix,AZ
Age: 71
Posts: 2,258
Wiki Edits: 0

Thanks: 21
Thanked 205 Times in 179 Posts
The best way to check this out is go to a transmission shop that can plug in a code checker while your truck is being driven,there are engine codes that affect the transmissions operation as well as codes from the trans.That way you will eliminate the guessing game.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-23-2010, 08:30 PM
Crosley's Avatar
Global Moderator
Last wiki edit: T-350 rebuild tech
Last journal entry: 1962 Morris Minor 1000
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 9,272
Wiki Edits: 1659

Thanks: 960
Thanked 300 Times in 265 Posts
Limp mode in a 4L60e is 3rd gear. Reverse will function. you will have 2nd gear if you manually shift to 2nd or 1st.

Is it possible you have a shifter adjustment problem? Something loose, broke , out of adjustment?

Does the speed-O function properly?

Perhaps you have an ignition switch problem that is cutting power to the trans....
Dont worry how old you are... it is the mileage on your body that adds up.
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which is the better 4L60E rebuild kit, please rate monette999 Transmission - Rearend 2 12-18-2010 06:25 AM
How To: Using TBI PCM for 4L60E Control. FastOrange Transmission - Rearend 4 10-31-2010 02:00 PM
4l60e - No reverse after rebuild - Low line pressure? reddeth Transmission - Rearend 5 06-03-2009 09:12 AM
700r4 to 4L60E swap chevy_c10 Transmission - Rearend 19 05-10-2009 08:30 AM
Transmission acting weird Blackhauk90 Transmission - Rearend 2 10-13-2008 04:01 PM

All times are GMT -6. The time now is 10:15 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.