Thanks for the LV vette link PJ. I checked that forum, not much going on... but I'll give it a shot. Driving to work yesterday I was thinking...slippage? As in a clutch? Is automatic transmission slippage caused by excessive "clutch" clearance or other facters and if so wouldn't that slippage also occur with a manual downshift? With manual downshift I get immediate response. No vibration, etc. Same also from a stop. If I floor it in 1st gear then manually shift to second, then manually shift to third...etc...I get no slip. Yet if I'm cruisin' in drive or overdrive up an incline at say
50 or 60 or 70 mph, then give more throttle w/o manually downshifting? The transmission sometimes vibrates before automatically downshifting.
Has anyone else experienced this? Is there a tech bulletin? Like I posted, this has happened to me since the transmission (and engine) had 40,000 miles on it. Not much. 40k is not enough for normal wear and tear to start acting like this.
It's almost like the transmission is rapidly switching from high to low quickly and causing a vibration before finally deciding to go to the lower gear.
jer