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step 1
Remove the left sound insulator
step 2
the stop switch is here, way way up top
use flash light to see it.
it is there.
top of pedal it is there. SM books step1.
buy the service manual.?
if the switch ever sticks on , cruise ENDS
it is a NO, switch normally open contarts
no calibration is stated so its PnP
There are many things that can cause your cruise control to act up or not work at all. This article will lead you in the correct direction on finding a solution to your problem. This article is for any type of vehicle.<br />
<br />
<b>If your cruise control won't hold proper speed, </b>you need to look at the following parts. <br />
<ol>
<li>Faulty Cruise Control</li>
<li>Faulty Speed Sensor</li>
<li>Faulty Vacuum or Vent Valve</li>
<li>Faulty Stepper Motor</li>
<li>Faulty Transducer</li>
<li>Incorrect Cable Adjustment</li>
<li>A Binding Throttle Linkage</li>
<li>Leaking Vacuum Tank</li>
<li>Leaking Vacuum servo diagram</li></ol>
<b>If your cruise control surges, </b>check the following parts.<br />
<ol>
<li>Faulty Cruise Control Module</li>
<li>Faulty Speed Sensor</li>
<li>Binding Throttle Linkage</li>
<li>Kinked Speedometer Cable</li></ol>
<b>If your cruise control cuts out on you, </b>check the following parts.<br />
<ol>
<li>Faulty Transducer</li>
<li>Faulty Cruise Control Module</li>
<li>Short or Open Circuit in Cruise Control</li>
<li>Brake or Clutch Switch Adjusted too tight</li></ol>
<b>If your cruise control doesn't work at all, </b>check these parts.<br />
<ol>
<li>Faulty Cruise Control Module</li>
<li>Short or Open Circuit in Cruise Control</li>
<li>Faulty Clutch or Brake Switch</li>
<li>Leaking Vacuum Circuit</li>
<li>Faulty Stepper Motor</li>
<li>Faulty Speed Sensor</li>
<li>Faulty Transducer</li>
<li>Faulty Cruise Control Switch</li>
<li>A Blown Fuse</li></ol>
There are several possible reasons why your cruise control may have stopped working. Here are some steps you can take to diagnose the issue:
Check the cruise control fuse: The first thing to check is the fuse that controls the cruise control system. Refer to your vehicle's owner manual to locate the fuse box and find the specific fuse for the cruise control. If the fuse is blown, replace it with a new one.
Check the brake light switch: The cruise control system is designed to disengage when you step on the brake pedal. If the brake light switch is faulty, the cruise control system may not work. You can test the switch by pressing the brake pedal and checking if the brake lights come on. If the brake lights don't come on, you may need to replace the brake light switch.
Check the speed sensor: The speed sensor is responsible for detecting the vehicle's speed and communicating it to the cruise control system. If the speed sensor is faulty or dirty, the cruise control system may not work. You can test the speed sensor with a multimeter or take your vehicle to a mechanic to have it tested.
Check the cruise control module: If all the above steps check out, the problem may be with the cruise control module itself. The module may be faulty and may need to be replaced. You can take your vehicle to a mechanic to have the module tested and replaced if necessary.
It's always recommended to consult with a certified mechanic or technician to diagnose and fix issues related to the cruise control system in your vehicle. They will have the expertise and necessary tools to troubleshoot the problem and provide the appropriate solution.
If the cruise control on your 1997 Buick LeSabre is intermittently working, there are a few potential causes that you can check:
Vacuum leaks: The cruise control system on your vehicle uses vacuum to operate, so if there is a leak in the vacuum lines, the system may not work properly. Check for any visible leaks and repair them if necessary.
Throttle position sensor: The throttle position sensor (TPS) sends a signal to the cruise control system to tell it the position of the throttle. If the TPS is malfunctioning, the cruise control may not work properly.
Servo Motor: The servo motor is responsible for engaging and disengaging the cruise control system. It may be that this motor is faulty or that the gears inside the servo motor have worn out.
Speed sensor: The speed sensor sends a signal to the cruise control system to tell it the vehicle's speed. If the sensor is faulty, the cruise control may not work properly
Vehicle Speed Control (VSC) module: This module is responsible for controlling the cruise control system. If it's malfunctioning, the cruise control system will not work correctly
It is highly recommended that you take your vehicle to a qualified mechanic to diagnose and repair the issue, as cruise control systems can be complex and require specialized knowledge and equipment to diagnose and repair.
Which engine ?
Cruise Control Description and Operation (3.6L)
Cruise Control Description and Operation (3.4L)
Do you know what all is involved in C.C. operation ?
Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at speeds above 40km/h (25 mph). However, steep grades may cause variations in the selected speeds. The main components of the cruise control system are:
• The cruise control module assembly
• The cruise control switches
• The cruise control release switch
• The powertrain control module (PCM)
• The stoplamp switch assembly
• The vehicle speed sensor
The cruise control module controls the operation of the cruise control system. The cruise control module monitors the signal circuits of the cruise control switches. When the normally open cruise On/Off switch closes with a switch activation, the cruise control modules detects a high voltage on the signal circuit. The cruise control module activates the cruise control system.The set/coast switch and the resume/accel switch will not operate the system when the cruise control module has not activated the system based on the cruise control on/off switch signal circuit .
The cruise control module monitors the cruise control set/coast switch in order to determine when to capture and maintain the vehicle speed. The cruise control module monitors the vehicle speed signal circuit in order to determine the desired speed. The PCM pulses the vehicle speed signal circuit at 4000 pulses per minute. After an initial set speed has been established, the cruise control module also uses the cruise control set/coast switch signal circuit in order to tap down the set speed when the cruise control module detects a switch activation.
The cruise control module monitors the cruise control resume/accel switch signal circuit in order to determine when to resume the previous set speed. This feature only works within the same ignition cycle and as long as the cruise wasn't turned off using the cruise control On/Off switch since the last cruise engagement. After the set speed has been resumed, the cruise control module also uses the cruise control resume/accel switch signal circuit in order to tap up the set speed when the cruise control module detects a switch activation.
The cruise control module assembly has a controller and an electric stepper motor to vary the throttle in each different cruise control mode. Two components in the module assembly help to do this. The electronic controller and the electric stepper motor. The controller monitors vehicle speed and operates the stepper motor. The stepper motor operates in response to the controller, to maintain the desired cruise speed. The electric stepper motor moves a strap that is attached to the cruise control cable which moves the throttle
run the fault codes and look for a faulty VSS sensor as it works the speedo and gives information to the cruise control as to road speed to keep the vehivlr at the set speed
cruise control best let garage check out,here are few things to check,check fuse and check to see if brake lights dont work.check brake light fuse if fuse okay brake light switch could faulty or bad connection then brake light will reset cruise control you apply brakes.if all is good problem could be speed sensor or accelerator pedal to ecm.you need diagnostic euipment to troubleshoot.
going down steep hills will all but over ride a cruise control, since the motor is trying to keep the vehicle slowed to what your desired speed that you set , unfortunately this doesn't always work,, as your speed increases, the motor can't keep the speed reduced, when you apply the brakes, the system shuts off, cruise controls were meant to be used pretty much on long flat surfaces with Low inclines ,,
buy the service manual.?
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