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Try from Servo control follow connection To I beleive Transmission casing . Look for Burnt wiring / frayed / damaged ...Cruise should maintain speed signal Like speedo cable . Computor management black box / ECM may have direct control so Look for engine bay fuse boxes = 2 under hood . More fuses ++ relays 2 check inside cover is diagram of size + what it controls . A Reset 2 ecm may help by disconnecting Battery - Let sit 30 mins.. Older models + 4 wheel drive Trans has Gear wheel of plastic 2 count revolutions as speedo cable does . If said wheel teeth have worn out then Cruise counts incorrect or fails 2 activate . If you replaced brake pedal Light activation switch then be sure brake Tail lights DO work if not the cruise will fail as brake pedal is part of safety feature to turn it off in emergency disconnect . The signal light Stalk that Turns off L / R signals is Common Item 2 wear out BUT it also controls Turning on cruise or setting ...IF you have Steering wheel on / off / setting control - then issue can be frayed / cut wires due 2 steering wheel movement ....solutions remove wheel BUT 1 st disconnect Air Bag Fuse then wheel and search connections .....Good Luck ...
This is just a guess and they can keep my point if I'm wrong :) but I would start looking around the cruise unit itself under the hood for loose plugs or, in some cases loose vacuum hoses. Some cruise units use engine vacuum for unit actuation, some use it as an indicator of engine speed though now it's mostly sensors and servo actuators operated by computer. I can't speak directly about your unit but sometimes, in all brands of vehicles, when you change something that is computer controlled, you have to reprogram the computer so it can accurately sense and operate the part or machine. Good luck. Jeff M.
Your best bet is to check what is happening by looking at cruise control data in the PCM and BCM. You will need a high end scan tool to do this. It could be as simple as a bad switch in the steering wheel or a brake switch that is bad or out of adjustment..
first ck fuse for cruise control,if ok ck power to main switch use a omp, amp meter for test, should have battery voltage to and from switch when in on position. if ok your next ck is steering wheel switch. air bag must be removed unhook battery wait five minutes remove airbag hook battery up ck steering wheel switch if ok below steering wheel is cable reel ck yellow connectors on both side for power if all have power to and from go under hood and ck power to cruise unit if ok pcm may not be letting it come on because of engine or trans readings dtcs pending or set can shut off cruise control
We had the same problem and ended up replacing the switch. We used a small flat-tip screwdriver and lifted along the edge of the switch. With the switch removed from the steering wheel, we disconnected the wire connector and installed the new switch by reversing the order.
The cruise-controls have 2-buttons that must be activated before it gets the car going when you remove your foot off the gas-pedal.
The cruise button is essentailly a switch that turns 'on' the cruise servo-motor that tells the sytems that you wants to use it, so it gets ready.
There are other three switches on the right-side of the steering wheel namely: resume accel; cancel; set decel.
To get your car to cruise: you must steady your speed and foot on the gas-pedal. You cannot just press the switches and expect the car to cruise. It takes about two-to-three seconds for the system to respond to a set cruising speed.
How to do it: accelerate to a speed of about 30-mph. Press the 'cruise' button on the dash first. Next you press 'set decel' button. This will turn 'on' the cruise control light on the instrument panel. Then wait a second or three and you would feel the cruise engagement. Any touch on the brake pedal will slow down the car and turns the cruise off. The 'cancel' button turns off the cruise light on the instrument panel.
If you hit the brake-pedal at any time for any reason, and you would like to continue cruising again, simply press the 'resume accel' button.
The cruise system works in conjunction with the braking system of the car. So all major parts of the braking system must be in good condition, otherwise the cruise system could shut off itself.
most likely the clock spring is not the problem because when u push the button the dash light cruise comes on.wich means that you do not have an open circuit.with a light tester check to see if you are getting power to the cruise control servo.if you are then replace it.if no power you will need a new cruise control stick on the steering column.
check your on and off button at the steering wheel.
use a multi-meter set in the ohm postion and see if there is conectivity as you push each button. you will have to take the button off the steering wheel but it will take
just a few minites. while your at it you can check the right side also.