My Cruise Control for Bonneville SSEi 94 is not working any more at all , previously it working for one or two second holding the speed then release again holding and release and now it is not working at all .
I check every things from the servo to the vacuum and fuses every thing is oky but its not working any more ?? any idea ? please help

Speed sensors? :o

thanks for your replay "russianpolarbear" but where is this sensor and how to know if its not working ?

1) The little wires in the lead going to the turn-signal lever controls have to jump the gap from steering column to lever. They may eventually break inside their insulation from flexing over the years. If the car falls out of cruise anytime you bump or move the lever while driving, this may be the problem.

2) The brake-pedal switch might need a little adjustment; maybe the plunger isn't pressed in far enough to keep the cruise circuit enabled when you're not actually braking. (I assume you're not driving with your left foot on the brake, too.)

The PCM controls cruise, hence it also stores trouble codes for the cruise control. A simple scan may help you here.