Ive noticed lately that in the morning when the engine and the outside temps are cold that the first few upshifts from 2nd to 3rd gear in "M" mode are jerky or clunking.

After the engine warms up or the summer cali wheather gets in full heat mode it doesnt happen.

I just took it to the dealer for an oil change service and they told me it was anything to be concerned about since there werent any lights on and of course the tech guy drove it and it didnt happen (in my theory b/c i already drove it from my place to the dealer sufficiently warming it up)

Is this normal or something i should be concerned about ? i was curious to what others think ?

thanks