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2005 cobalt Transmission fluid.... #5136140
06/16/19 09:22 PM
06/16/19 09:22 PM
Joined: Mar 2019
Posts: 26
Georgia, US
Jcountry Offline OP
Jcountry  Offline OP

Joined: Mar 2019
Posts: 26
Georgia, US
Hi-

Thinking about changing ATD on my wife's 2005 cobalt.

Not sure if it is worth the trouble.

Car had 215k, and had a tranny rebuild at about 170k.

I'm trying to make it last a little longer, but I'm not sure whether it's a good idea to fool with a change on a rebuilt transmission at this point (might jinx the car) smile

Anyhow, if I decide to fool with it, what brand of ATF and filter would be good? (I know GM sometimes updates fluid recommendations for older transmissions like this, but I don't have access to service data.)

Re: 2005 cobalt Transmission fluid.... [Re: Jcountry] #5136212
06/16/19 11:30 PM
06/16/19 11:30 PM
Joined: Feb 2009
Posts: 17,568
Michigan
daves87rs Offline
daves87rs  Offline

Joined: Feb 2009
Posts: 17,568
Michigan
Max life ATF


2019 Chevrolet Equinox LS
2006 Chevrolet Cobalt LS
Re: 2005 cobalt Transmission fluid.... [Re: Jcountry] #5136243
06/17/19 01:16 AM
06/17/19 01:16 AM
Joined: Jan 2006
Posts: 513
GA
drtyler Offline
drtyler  Offline

Joined: Jan 2006
Posts: 513
GA
Dexron VI or Maxlife. Used both in our Cobalt for its entire 315k mile life.

Original trans died around 30k. Used transmission installed and it lasted until 285k. Fluid changes done at 100k (Maxlife) and 200k (Dexron VI). At 285k, transmission solenoid failure, and replaced with another used transmission, which lasted until the car was in an accident at 315k.




Re: 2005 cobalt Transmission fluid.... [Re: Jcountry] #5136729
06/17/19 03:21 PM
06/17/19 03:21 PM
Joined: Jul 2005
Posts: 11,802
Maricopa Arizona
dave1251 Offline
dave1251  Offline

Joined: Jul 2005
Posts: 11,802
Maricopa Arizona
DEXRON VI or Maxlife like previous posters have stated.


make the inside of your engine oil cap white.
don't use.
Re: 2005 cobalt Transmission fluid.... [Re: Jcountry] #5136900
06/17/19 06:15 PM
06/17/19 06:15 PM
Joined: Mar 2008
Posts: 8,508
USA
slacktide_bitog Offline
slacktide_bitog  Offline

Joined: Mar 2008
Posts: 8,508
USA
Another vote for Maxlife thumbsup

If your transmission doesn't have a drain plug, I would also suggest you get an aftermarket pan that has one smile

Re: 2005 cobalt Transmission fluid.... [Re: Jcountry] #5136931
06/17/19 06:49 PM
06/17/19 06:49 PM
Joined: Mar 2019
Posts: 26
Georgia, US
Jcountry Offline OP
Jcountry  Offline OP

Joined: Mar 2019
Posts: 26
Georgia, US
Thanks all!

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