Trans rebuild vs. new one - 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 07-15-2007, 02:22 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default Trans rebuild vs. new one

What happens when someone rebuilds a transmission... and how do I tell if mine should be rebuilt or if I should just get a new one? Mine'* original at 130K. Is a rebuild just taking it apart and straightening it out or something? Sorry, I have no idea.
zuper8 is offline   Reply With Quote
Old 07-15-2007, 02:59 PM   #2
Senior Member
True Car Nut
 
Join Date: Aug 2004
Location: In your garage, swipin' da lug nutz
Posts: 3,067
Thanks: 0
Thanked 0 Times in 0 Posts
sandrock is on a distinguished road
Default

Rebuilds vary, depending on the condition of the internal parts when the trans is brought to them. At every rebuild, there is a kit that includes all the known gaskets, friction plates, and steel clutches. But there are pieces that these kits do not include, things like thrust washers (plastic washers that tend to be the first pieces that let go in a transmission), and other little tidbits.

After that, there are what are called "hardparts". These would include any gears, shafts, pistons, vavle bodes, and any other non-plastic pieces that are in transmissions. The rebuilder will clean and inspect all these parts, and toss out any part that is deemed unserviceable. This is why transmission rebuilds can vary in price so much. It all depends on whether or not the transmission just needs to be freshened up, or needs a complete overhaul due to lack of maintanance or abuse.

EDIT: Some transmission shops will teardown, inspect, and diagnose for free. BUT, the labor and parts to put it back together isn't. No shop can tell you exactly what is wrong with a transmission w/o tearing it apart first, which makes trans rebuilds an "all or nothing" affair.
sandrock is offline   Reply With Quote
Old 07-16-2007, 08:51 AM   #3
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

Let'* keep in mind the thrust washers Brad mentions are common in his model of transmission which is not the same as Rachael'*. We haven't seen the same types of problems with thrust washers. (I don't want people to be scared about the kit not normally containing them, since a shop would replace them automatically if they need to be replaced)

Rach.. At 130K your transmission may or may not be in need. A new transmission is that..brand new parts 100% through. A rebuild looks at all the parts, replaces the normal wear items and then inspects and replaces any other parts that need to be replaced. If done well and properly..a rebuild is as good as a new transmission w/o the high cost.
BillBoost37 is offline   Reply With Quote
Old 07-16-2007, 12:04 PM   #4
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2006
Posts: 441
Thanks: 0
Thanked 0 Times in 0 Posts
zuper8 is on a distinguished road
Default

hmmm okay thanks!
zuper8 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Learning to rebuild a trans Danthurs General GM Chat 45 12-13-2009 05:59 PM
Rebuild Done. TRANS FIXED!!! sharpshooter3578 1992-1999 2 02-10-2008 08:40 PM
'92 SE trans won't shift out of 1st after rebuild crash93ssei 1992-1999 1 01-23-2008 11:14 AM
Trans Died Today, What should the rebuild have in it? Hans Performance, Brainstorming & Tuning 16 02-03-2007 04:08 AM
Trans Rebuild time! crzydmnd72 1987-1991 10 03-06-2006 11:11 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 02:02 PM.


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.