No first gear when 15 degrees or colder

[LeSabre97mint]

I have a 97 lesabre that I've owned for around 3 to 4 months. The transmission has been shifting great until it got cold. (around 15 degrees).

This morning (and other mornings) the tranny does not start out in 1st. I believe the tranny is in 2nd even when I put the slector into 1st. When driving and I put the selector into 2nd I do not get an upshift. Selector into 3rd I get an upshift. This morning the tranny did not down shift after a 23 mile drive. I had to manual down shift to move in the parking lot at work. I don't believe I got over drive to engage.

After work, (weather much warmer say 20 or more) the tranny shifted very well. I got all of the gears even over drive.

Okay guys.... whats up with this thing? The fluid is full and looks fairly clean. What would be tempature senative? I have not gotten a "check engine/tranny" lite. I've read about these trannies (4T60E) requiring an upgrade to the valve body. Any one out there with any experience with this?

This car is in excelant shape. I would like the trans to shift like it should.

Thanks for your input.

Dan

[tman]

It may be that the weather is too cold for the fluid to properly work, you should get fluid that has a lower recommended temperature.

Also, overdrive is shut off until engine temps reach~130 degrees

[LeSabre97mint]

Originally Posted by tman2093

It may be that the weather is too cold for the fluid to properly work, you should get fluid that has a lower recommended temperature.

Also, overdrive is shut off until engine temps reach~130 degrees

Tman

Thanks for your reply!
A little update on the tranny shifting problem.

This morning (5 degrees) the tranny shifted fine. I don't think it's the tranny fluid. ??
On the over drive... the engine was up to temp and I still did not get overdrive when the tranny was acting up.

Any thoughts?

Dan