No 4th gear - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-04-2005, 10:04 AM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default No 4th gear

No longer will shift into 4th. Don't know if 4th gear crapped out on me or if the torque converter doesnt engage. I'm going to drop the pan this weekend to see if there'* high quantities of metal. Other than not shifting into 4th it works perfectly.
Pending what I find on the magnet could it be 4th gear is shattered or could it possibly be just a solenoid that fried out?
smellbird is offline   Reply With Quote
Old 11-04-2005, 10:22 AM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Clutch pack burnt up would be more likely.
BillBoost37 is offline   Reply With Quote
Old 11-04-2005, 11:46 AM   #3
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

No SES light? That'* usually associated with a shift or TCC problem.

Possibilities would also include:

TCC solonoid
Slipping TC unable to lock up
TPS
willwren is offline   Reply With Quote
Old 11-04-2005, 12:28 PM   #4
BANNED
 
Join Date: Aug 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
banned3800 is on a distinguished road
Default

Does the TCC lock up in 3rd gear as it should? Say at about 36-40 Mph with light throttle?

If it does than it should also function for 4th gear... Being that 1st,2nd and 3rd gears work, this should tell us that the solenoids are functioning, There are 2 on off solenoids that control what gear the trans is in via the PCM...

we have seen several 4T65-E'* LD and HD that had the 4th gear splines chewed off, which in turn later destroyed the Converter...

Seth, have you hooked to a scantool yet to see if you are throwing any tranny codes for slip, and or have you looked at the raw data to see what the PCM is trying to do with regaurds to the trans?

Also if the Trans range switch is bad, and you have it in 4th but the PCM is not seing that, it will revert to third with No TCC apply...

So there are several things you need to look at beofre we call the tranny dead... If you find a lot of metal, you'll know the story...

__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
banned3800 is offline   Reply With Quote
Old 11-04-2005, 12:43 PM   #5
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default

Quote:
Does the TCC lock up in 3rd gear as it should? Say at about 36-40 Mph with light throttle?
Yes.
I havent had any Check Engine warnings. and my scan tool is not detailed enough to scan the tranny. I may take it to Aamco to see if they can scan it.

Bill can you explain the TPS? I cant see how that would effect shifting unless it was really messed up. Wouldnt it effect every gear, not just 4th?
smellbird is offline   Reply With Quote
Old 11-04-2005, 12:46 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

A TPS will primarily prevent TCC lockup if it has a dead spot or an internal short. The TPS enhancement mod itself can explain this.

With the TPS enhanced, a very light touch on my 93'* throttle will unlock the TCC, where on the 95, I use about 1/4 throttle before that happens. It'* very touchy.

I've had failed TPS'* cause OD problems on my 94 Suburban and my 93 a couple years ago.
willwren is offline   Reply With Quote
Old 11-04-2005, 05:02 PM   #7
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default

Well, Aamco didnt find anything wrong on their scan. So the most likely culprit is 4th gear splines got chewed off. I've been waiting for an excuse to beef up the tranny, now I have it.
Already been talking to Todd about what to get.
smellbird is offline   Reply With Quote
Old 11-04-2005, 07:16 PM   #8
Junior Member
Posts like a V-Tak
 
Join Date: Feb 2005
Location: DFW Texas
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
SSEiJake is on a distinguished road
Default

Mine wouldnt shift into fourth, with no codes, because all the splines on the 4th gear drum sheared off, might be your problem too.
SSEiJake is offline   Reply With Quote
Old 11-05-2005, 02:12 AM   #9
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,134
Thanks: 0
Thanked 0 Times in 0 Posts
SSEimatt93 is on a distinguished road
Default

Trannys seem to be the thing lately. Mine took a long time to lock up before it went, was actually using 3rd on the highway...not really exceeding 60-65 mph, but i had really no choice..it was between gears non stop, slipping like crazy. Now it connects like crazy, shifts like crazy, and goes into OD like crazy.
Worth it.
SSEimatt93 is offline   Reply With Quote
Old 11-05-2005, 09:20 PM   #10
Senior Member
True Car Nut
Thread Starter
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default

Quote:
Originally Posted by SSEiJake
Mine wouldnt shift into fourth, with no codes, because all the splines on the 4th gear drum sheared off, might be your problem too.
Yup, that is precisely what is going on. Confirmed that today.
smellbird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
4th gear gone at 115,000 miles 99_Bonney_SLE 1992-1999 7 11-11-2005 12:33 PM
Tug in 4th gear. 95seand78z28 1992-1999 3 11-02-2005 02:21 PM
FYI if you lose 4th gear / no fourth gear / no 4th gear caminated2k 2000-2005 6 07-24-2005 11:26 PM
Harsh upshift from 3rd to 4th gear int_53185 1992-1999 7 09-22-2004 11:41 PM
hesitation from 3rd to 4th gear ?? Drifter420 1992-1999 10 08-14-2002 08:24 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:48 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.