Jean-Marc Dugas
PCS Member
Troubleshooting the cruise control system on my 76...
I am following the troubleshooting sequence from the Cadillac Shop Manual. The fuse is good, all of the vacuum hoses are at the right place, the button on the directional signal shaft is good but the brake switch is defective. Will have to get a new one. Still have to test the main switch (the one in the video) and the transducer itself.Yes, that turns on the system. If it isn't working, the first thing to do is to make sure that the cancel switch at the brake pedal if fully depressed. Also check for a blown fuse. Most cruise control units will not work under 30 MPH, so take it out on the highway and try it. From memory, once you turn it on, and you reach the desired speed, you touch the button at the end of the directional signal shaft, and that will set the unit at your given speed. Touching the brake pedal will deactivate the cruise control.