93' Buick regal Code 39.

Transaxle Clutch Switch Circuit.

What exactly is going on?

The TCC is not coming on as commanded, torquecconvertor clutch, could be many things, bad or mis -adjusted stop lite switch, wiring problelm to the tcc solenoid, bad solenoid. These components will need to be checked out, no quick answer here.

hmmm , woulda delayed shifts and a code 39 have any relation. and in delayed shifts i do not mean slipping. the acceleration just seems "Heavier"

Vague description there, but yes the trans could need an overhaul along with a bad convertor.

thanks for the help , im going to take it to aamco to get a diagnosis

turned out to be a bad solenoid , of course i declined repair because i heard this is any easy fix. only question... seems like there 2 kinds of solenoids, what one does my 93 regal use?

http://cgi.ebay.com/ebaymotors/Shift-and-TCC-Solenoid-4T60E-91-up_W0QQcmdZViewItemQQcategoryZ33727QQihZ008QQitemZ 180101322928QQtcZphoto#ebayphotohosting

or

http://cgi.ebay.com/ebaymotors/Solenoid-TCC-PWM-4T60E-91-up_W0QQcmdZViewItemQQcategoryZ33727QQihZ008QQitemZ 180101323087QQtcZphoto#ebayphotohosting

Easy fix?, the trans side cover must come off, lt axle, the subframe usually has to be dropped, this is not in the lower pan.