My 1995 Monte Carlo Z34 w/3.4L DOHC V6 and the 4T60E has an extremely harsh
1-2 upshift when cold. I mean, it is fun at times, at WOT in the mornings
driving down the street it'll chirp between 1-2, which is quite intimidating
to the posers that live in my neighbourhood.
Anyway, when it's REALLY cold it sometimes sticks in neutral between 1st and
2nd for a second or two, then slams into 2nd, but most times it's just a
really harsh shift, only when cold.
Where should I start looking for problems?