Question about 1987 Cadillac DeVille
I had the same problem on my 97 ram 1500, it had a broken vacuum line. I repaired the line and cruise worked. Lucky me, no cruise does not work on my wifes neon
Posted on Jun 26, 2008
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Posted on Jan 02, 2017
If you can please look under the hood and find the Air filter, and follow that all the way to a round metal part (Throttle body) If you can see it there will be a coil,and on that coid will extrude a curved plate with a cable(throttle cable) attached to it running all the way back inward toward the back of the engine, and next to that there should be a second cable (crusie control cable). This cable is pulled on when you engage the cruise control, by a black box next to the fuse box.
If the Cruise control cable is near by try to reattach it and if it is damaged then have your dealership or some one mechanically inclinded to replace the tip ( if plastic) or replace the cable.
If that didnt help please get back to me
Posted on Jul 16, 2009
no not a fuse may be the switch itself this is common and parts are not badly priced. replace the switch. It just pops out. The directions will tell you to take out the airbag first but it will sneek out of there.
Posted on Feb 13, 2009
This is a problem you will to take to a shop, If you are mechanically inclined I can help you, but if not I would not mess with it, it could be the button or it could be the controller and could even just be a fuse, check the fuse and if you don't find the fuse blown then let me know if you have a volt meter and what to test this yourself. You are going to be working around the air bag too and if you probe the wrong wire while testing you could break your arm or leg by deploying the air bag by accident. Or your neck.
Posted on Aug 06, 2009
SOURCE: cruise control will not engage
pull the plastic cover off the top of the engine and check where the cable from the cruise control connects by the throttle body. There is a plastic connector that might be broken. i had the same problem and a piece of tape fixed it for me but you can replace the part if your picky.
Posted on Sep 30, 2009
I press the control switch on my 1999 Jeep cherokee. the cruise light doesn't come on and the cruise does not engage. Please offer a solution.
Posted on Jan 11, 2010
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The On/Off switch
The Resume/Accel switch
The Set/Coast switch
The TCC brake switch
The stop lamp switch
The throttle actuator control (TAC) motor
The vehicle speed sensor
Cruise Control Engaged
The cruise control system will engage and adjust the vehicle speed based on the activation of the following cruise control switches:
The cruise control switches are located on the multifunction/turn signal lever.
The powertrain control module (PCM) monitors the signal circuits of the cruise control switches in order to determine when to capture and maintain the selected vehicle speed. The PCM uses the throttle actuator control (TAC) module motor in order to control the vehicle speed. For further information on the TAC System, refer to Throttle Actuator Control (TAC) System Description in Engine Controls - 4.2 L.
Ignition positive voltage is supplied from the 10 ampere HVAC 1 fuse to the cruise control switch via the ignition 3 voltage circuit. When the normally open cruise control On/Off switch is turned On, the switch closes and the PCM detects a high signal voltage on the cruise control on switch signal circuit. When the normally open Set/Coast switch is pressed, the switch closes and the PCM detects a high signal voltage on the cruise control set/coast switch signal circuit. To engage the cruise control system, turn the On/Off switch On and momentarily press the Set/Coast switch. The PCM will confirm that the cruise control enable criteria has been achieved. The PCM will engage the cruise control system and record the selected vehicle speed. The PCM sends a class 2 message to the instrument panel cluster in order to illuminate the cruise control indicator. Pressing the accelerator pedal, while the cruise control system is engaged, will allow the driver to override the cruise control system in order to accelerate the vehicle beyond the current set vehicle speed. When the accelerator pedal is released, the vehicle will decelerate and resume the current set vehicle speed. The driver can also override the current set vehicle speed via the Set/Coast switch and the Resume/Accel switch. When the cruise control system is engaged, pressing and holding the Set/Coast switch will allow the vehicle to decelerate from the current set vehicle speed without deactivating the cruise control system. When the Set/Coast switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily pressing the Set/Coast switch will allow the vehicle to decelerate at 1.6 km/h (1 mph) increments for each time that the Set/Coast is momentarily pressed, with a minimum vehicle speed of 37 km/h (23 mph). When the normally open Resume/Accel switch is activated, the switch closes and the PCM detects a high signal voltage on the cruise control resume/accel switch signal circuit. Activating and holding the Resume/Accel switch, when the cruise control system is engaged, will allow the vehicle to accelerate to a greater vehicle speed than the current set vehicle speed. When the Resume/Accel switch is released, the PCM will record the vehicle speed and maintain the vehicle speed as the new set vehicle speed. When the cruise control system is engaged, momentarily activating the Resume/Accel switch will allow the vehicle to accelerate at 1.6 km/h (1 mph) increments for each time that the Resume/Accel switch is momentarily activated, with the maximum acceleration total of 16 km/h (10 mph) over the current set vehicle speed . Momentarily activating the Resume/Accel switch, after the cruise control system has been disengaged by pressing the brake pedal, will recall the previous set vehicle speed that is recorded in the PCM.
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