tranny flush or not? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


General GM Chat When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made. Chat about all things GM (and related cars). Off-topic stuff should be in the Lounge, and all Model specific mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-29-2007, 09:45 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Location: Whitewater, Wisconsin
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
nicklikesmilk is on a distinguished road
Default tranny flush or not?

i'm considering flushing the 4T60-E transmission in my 96 bonneville. it'* been shifting a bit rough lately, especially between the 1st and 2nd gears. i've only owned the car for 7 months and there'* no record of when the last flush was. I checked the fluid, its not quite pink, but its not dark red...it'* a light crimson, sorta lighter than blood. it doesn't have a strong burnt smell, just a tiny bit...it'* also sat outside since mid-december without being driven until about a week ago. i take the consensus that flushing doesn't hurt a transmission, except for ones that are already failing, then it just expedites the failure. i know a flush would be good, but i'd like to know if i really need one before i invest some money (it'* kinda tight right now) and time (tight, also) into this. thanks for any help
nicklikesmilk is offline   Reply With Quote
Old 03-29-2007, 09:51 PM   #2
Senior Member
True Car Nut
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

I personally would just drop the pan and change the fluid and filter.

But that'* just my 2 cents
corvettecrazy is offline   Reply With Quote
Old 03-29-2007, 09:56 PM   #3
PopaDopaDo
True Car Nut
 
popatim's Avatar
 
Join Date: Jan 2005
Location: NY
Posts: 4,957
Thanks: 0
Thanked 0 Times in 0 Posts
popatim is on a distinguished road
Default

I agree with Rob, the filter is $20 and the fluid will be about $20. Your labor is free
The shops around here want $80 for a tranny flush.
popatim is offline   Reply With Quote
Old 03-29-2007, 10:18 PM   #4
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

X3 on the fluid/filter. The filter isn't replaced with a flush, so I'd just drop the pan myself. It'* a very easy procedure and you can have it all back together within an hour.
bonnie94ssei is offline   Reply With Quote
Old 03-29-2007, 10:18 PM   #5
Member
Posts like a V-Tak
 
Join Date: Feb 2007
Location: salisbury ma.
Posts: 56
Thanks: 0
Thanked 0 Times in 0 Posts
CoolantElbow is on a distinguished road
Default flush

it also depends on how many miles you have on the car as well.
i would do a filter kit and see if that inproves your problem,
if not then ya have to take a look inside and see the valvebody and gears to see whats up............
CoolantElbow is offline   Reply With Quote
Old 03-30-2007, 12:01 AM   #6
Senior Member
True Car Nut
 
Join Date: Feb 2006
Location: Somewhere different on the globe every month....
Posts: 2,896
Thanks: 0
Thanked 0 Times in 0 Posts
Cheetah is on a distinguished road
Default

Sounds like it'* time for a fuild and filter change
Cheetah is offline   Reply With Quote
Old 03-30-2007, 03:39 PM   #7
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Location: Whitewater, Wisconsin
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
nicklikesmilk is on a distinguished road
Default

thanks for the info guys...the car has 129 k....but i'll be making a run near the parts store tonight and i'll pick up some fluid and a filter...it'* dexron III fluid that i need, right? and about 6 quarts? should i use regular or synthetic oil? i know synthetic is more expensive, and some say it has such good lubricative properties that it can cause slippage.

edit: i read techinfo. (should have before i posted) and it says dexron IIE OR dexron III (not synthetic)...but still thanks for the help
nicklikesmilk is offline   Reply With Quote
Old 03-30-2007, 05:35 PM   #8
Senior Member
Certified Car Nut
 
Join Date: Oct 2002
Posts: 11,307
Thanks: 0
Thanked 0 Times in 0 Posts
bonnie94ssei is on a distinguished road
Default

Synthetic can be bad for our (old) transmissions. Just grab 2 gallons of some good brand ATF. You'll use most of it.
bonnie94ssei is offline   Reply With Quote
Old 03-31-2007, 03:35 PM   #9
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Location: Whitewater, Wisconsin
Posts: 319
Thanks: 0
Thanked 0 Times in 0 Posts
nicklikesmilk is on a distinguished road
Default

if the bottle says dexron III/mercon, will that still work as dexron III? just want to make sure i'm putting in the right stuff...i know recently bottles started saying just "automatic transmission fluid" to replace one or two different grades of oil.
nicklikesmilk is offline   Reply With Quote
Old 03-31-2007, 05:24 PM   #10
Senior Member
True Car Nut
 
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Thanks: 0
Thanked 0 Times in 0 Posts
TrueWildMan is on a distinguished road
Default

Quote:
Originally Posted by nicklikesmilk
if the bottle says dexron III/mercon, will that still work as dexron III? just want to make sure i'm putting in the right stuff...i know recently bottles started saying just "automatic transmission fluid" to replace one or two different grades of oil.
Yes, that should work okay.
TrueWildMan is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
GXP transmission flush, & flush in general SAMzGXP General GM Chat 32 07-19-2011 06:41 PM
02 SSEi w/88K tranny flush or not? NWASSEi 2000-2005 4 07-06-2009 10:18 PM
To flush or not to Flush lunchboxx 1992-1999 22 09-08-2008 10:49 AM
tranny flush LittleHoov General GM Chat 5 07-30-2003 07:57 PM
tranny flush White Lightning 1992-1999 6 06-30-2003 12:35 AM


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 02:42 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.