why does my trans drop out of overdrive? - 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 01-29-2003, 03:42 PM   #1
Senior Member
True Car Nut
Thread Starter
 
Join Date: Dec 2002
Location: Sauk Centre, MN
Posts: 5,458
Thanks: 0
Thanked 0 Times in 0 Posts
OLBlueEyesBonne is on a distinguished road
Default why does my trans drop out of overdrive?

HEY, I'M BACK!!!
Anyhow, I bought a 1994 Bonneville SLE Gold Edition at an auction on January 3rd. Driving it home it rode good except once it warmed up it it dropped out of overdrive. I have driven it out of town 3 times since then it did the same thing all three times.
My friend an identical 1995 Bonneville SLE Gold Edition that doesn't go into overdrive all the time, but when he stops, puts it in park, then back to drive, then takes off under medium to heavy throttle, then shifts into OD manually at 45-50mph then it goes into and stays in OD. I used to have to do this in my old 1993 SSE also. But when I try it in this car it doesn't work.
Is my transmission computer bad ( should I switch comp from my old 1992 SE)? Does it just need a flush of fluid and change of filter? Or is the tranny bad?
P.*. Any Minnesota area Bonneville guys interested in a get-together this summer?
Thanks in advance,
Martin
[email protected]

1994 Bonneville SLE Gold Edition, cone filter on stock air hose, NGK V-power plugs, 9mm wires, XENON blue 80/100w 9006 low beams, XENON blue 100/120w 9005 high beams, XENON blue 55w 893 foglamps, LED taillamps.
OLBlueEyesBonne is offline   Reply With Quote
Old 02-07-2003, 08:52 PM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Sep 2002
Location: Macomb, MI
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Teferius is on a distinguished road
Default

I dont know if you have the 4t60e but i think some bonnevilles do and that is the same trans i have in my GTP. Mine just took a crap on me and that is exactly what was going on with mine before it pooped. But it could just be some sensors. If you havent changed your fluid and filter lately do that too.
Teferius is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Why does my trans. shift hard after it warms up ?? D. Rustin 1992-1999 19 08-04-2007 01:24 AM
Went to store-had overdrive, coming back-NO OVERDRIVE Hafrod Buick 13 06-01-2006 10:44 PM
overdrive or not to overdrive duffer26 1992-1999 10 03-13-2004 12:09 AM
WHY WHY WHY?? bonnie94ssei Lounge 36 09-25-2003 05:53 AM
Why does my trans drop out of OD? OLBlueEyesBonne 1992-1999 3 01-30-2003 12:53 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 10:20 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.