The AutoTrans Interceptor is a permanent adapter plugged into the existing
wiring harnesses of computer-controlled transmissions: Adjustable increase
of transmission line pressure reduces burnt clutches & bands. · Eliminates
the need to install complicated "valve body kits". · Compatible with 4T40E
or 4T45E automatic transmissions, Jumper style settings, other applications
available, 4L60E, 4L80E, 4T60E, E4OD, 4R100 · Plug in installation! The
AutoTrans Interceptor cleans up the vehicle's signal, while improving shift
quality and increasing vehicle performance.

This model is for the Cavalier, Grand Am, Acheiva, Cutlas

Buy here:

http://cgi.ebay.com/ebaymotors/AutoTrans-Interceptor-Electronic-Modulator-4T40-4
5E_W0QQitemZ4600584049QQcategoryZ6755QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Check out the AutoTrans website for application information

http://www.autotransinc.com/intercept.htm