Jumps out of third

**BIG D's SS** · 08-13-2005, 11:55 AM

While I had my car in the shop for the rear end my m6 tranny has started jumping out of 3rd gear. while it was still under warranty I am having it fixed. The mechanic said he thought it was the third gear synchronizer. WHat do ya'll think??????????????

**blackdog** · 08-13-2005, 01:28 PM

It's one of the following:

Synchronizer damaged or excessively worn.

Blocking ring damaged, worn index slots or friction surfaces worn or damaged.

Excessive countershaft end play.

Shifting fork loose on shift rail, worn or damaged fork or fork pads.

**Daniel P.** · 08-30-2005, 06:44 PM

mine dont really slip out of third but when im shifting to third from second at anything over 4 grand its like its not there but 2 and 3th are but if i shift at say 3500 its fine, what is the deal? It may just be me though ive never had a six speed before 2 weeks ago

**30thbird** · 08-31-2005, 04:56 AM

The aluminum 3/4 fork in ALL Fcar T56s is crap. You will need an iron/ upgrade part and perhaps syncro parts if you let it go too long.Do NOT let the dealer/ repair shop put an aluminum 3/4 fork back in. The iron part is available in the GM system.

**BIG D's SS** · 08-31-2005, 05:04 AM

I have heard that about the 3/4 fork. My buddy has tore out 3 of them before someone told him about the new fork. Thanks for the info.

**HAWKNYU** · 09-03-2005, 08:38 PM

The 3/4 shift fork is bent, get a steel one. It's a Viper part.

rays00ramair · 09-05-2005, 04:07 PM

mine was the keepers that hold the clips on the synchros.rebuilt by more performance works great now.

**bww3588** · 09-21-2005, 07:31 AM

Originally Posted by Daniel P.

mine dont really slip out of third but when im shifting to third from second at anything over 4 grand its like its not there but 2 and 3th are but if i shift at say 3500 its fine, what is the deal? It may just be me though ive never had a six speed before 2 weeks ago

you need a shift skip eleminator. the shift skip module makes it so when the engine is wound out you have to skip a gear or 2 two. http://www.slponline.com/view_product.asp?P=21008

**30thbird** · 09-21-2005, 07:40 AM

WOW , b -dub-dub3588, you have royally missed the point!!

**bww3588** · 09-21-2005, 05:18 PM

Originally Posted by 30thbird

WOW , b -dub-dub3588, you have royally missed the point!!

whoa. yea i was replying to another post and got mixed up or somthing. sorry about that/

**Liquifire** · 09-23-2005, 11:18 PM

Originally Posted by big d's ss

While I had my car in the shop for the rear end my m6 tranny has started jumping out of 3rd gear. while it was still under warranty I am having it fixed. The mechanic said he thought it was the third gear synchronizer. WHat do ya'll think??????????????

So was it the fork????