The transmission in my 05 LS (3.4l) is starting to act up (intermittent slipping, soft shifts). Had it flushed, no difference. Just over 86,000 miles on it. Just curious what kind of life span other members are seeing in similar vehicles. If you dont mind, post your year, engine, and mileagebefore repair/replacement. Cost would be interesting too. Still running the original with no issues? Lucky you. Thanks in advance for your replies.

 

01 ss (3.8) 95k miles no issues original so i guess lucky me

 

97 z34 (3.4) 38000 miles before rebuild.

 

Mine is a 03 LS with 99,050 miles on the clock and is the origional tranny....shifts perfect without no slipping what-so-ever. Probably the mobil one FULL SYNTHETIC tranny fluid and a good quality filter is what is making it last.

 

04 LS Stock 79,000 No problems Knock wood.

 

Trans on my 00 LS went out with about 85K on the odometer[:@]

 

I have 39000 on an 07 and the tranny is smooth as can be.
I also put 117,000 on a 97 Cutlass Supreme with the same trans, no problems.

Question for the experts here: I am due for my first oil change in 1000 miles (I bought the car with 38,000). Would you reccomend I have the trans fluid flushed, or am I good for a while?

If I flush it, should I go with synthetic? I have read that changing to fully synthetic oil midway into the lifespan of a car can lead to oil leaks. Is this true, and is the situation the same for trans? Thanks for any info!

 

well i am no expert,but i heard nothing but bad things about tranny or oil flushes,nor would i or recommend anybody to get it done.on my 01 its got 80,000 no issues (knock on wood) and my folks got the same tranny with 150,000 original tranny

 

'99 Z34 3800....147,000 miles original transmission, no problems.

 

01 SS - replaced overdrive hub at 77,000; presently have 115,000.