2006 - Transmission problem

[richardh05k]

I have a 2006 LaCrosse with just over 100K miles. It has this annoying problem of feeling like the transmission is slipping in and out of overdrive when I get on a slight upgrade. The tach indicates a sharp increase in rpm when it happens.
It only seems to happen when the car is at running temp and freeway speeds.

 

[rdanville]

I have a 2006 LaCrosse with just over 100K miles. It has this annoying problem of feeling like the transmission is slipping in and out of overdrive when I get on a slight upgrade. The tach indicates a sharp increase in rpm when it happens.
It only seems to happen when the car is at running temp and freeway speeds.

Transgo kit? see my other post.

 

[richardh05k]

I woundered if there wasn't something like that. I've put these kits in before with good luck.

 

[rdanville]

A lot of info on the internet. I would do the kit and add a bottle of lubegard red.