Will it help to add a second can of Trans Tune for hard shifting? [SOLVED]

I have a 2005 Impala with 82,500 miles on it. It shifts very hard into 1st gear when slowed to a stop or close to a stop. Also shudders pretty hard sometimes if it doesn’t drop into 1st on a take off but it works fine if I manually shift it. I put a can of Sea Foam Trans Tune in and it seemed to fix the problem or at least make it much better. Now about 2 weeks later it’s starting to do it again. Will it help to add another can of Trans Tune? There are no check engine or warning lights on.

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Jim D.
Jim D.
4 months ago

Thanks for the question, Jeffrey.

Unfortunately, a second can of Trans Tune would not help. (Do not add more than one can to a transmission system at one time).

There’s a possibility that a new filter and pan gasket could help the problem (though without looking at the fluid condition and color personally I can’t say for sure).

I would recommend having the vehicle looked at by a transmission shop.