2000 Cadillac Eldorado Cruise Control Isn't Working

Fixing Cruise Control Issues in 2000 Cadillac Eldorado

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2000 Cadillac Eldorado cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2000 Cadillac Eldorado cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

A faulty cruise control module will simply result in deactivation of cruise control settings. This is because a detected error in the cruise control system could lead to hazardous driving conditions, so the module will be disabled, and the cruise control system warning light will be displayed. This will be a different message depending on make and model, and a warning light or message may be displayed on the driver instrument cluster.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control on a 2000 Cadillac Eldorado?

When troubleshooting the non-functioning cruise control on a 2000 Cadillac Eldorado, it's essential to adopt a systematic diagnostic approach. Start by utilizing a scanner or traditional diagnostic methods to identify any error codes that may indicate specific issues. Next, inspect the electrical components, as cruise control systems heavily rely on them; look for any signs of wear or damage. Pay close attention to the control module, sensors, and switches, as failures in these areas can disrupt functionality. Additionally, verify that the throttle actuation is operating correctly, as any malfunction here can prevent the cruise control from engaging. It's also crucial to check the vehicle speed sensor and its circuit, as problems in this area can directly affect cruise control performance. Ensure that the brake pedal is not stuck in the open position, as this can inhibit the system from activating. Finally, consult the vehicle manual to locate the fuse box and inspect the fuse dedicated to the cruise control system, as a blown fuse can easily be the culprit. By following these steps, you can effectively diagnose and potentially resolve the issues with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2000 Cadillac Eldorado?

When troubleshooting the cruise control system in a 2000 Cadillac Eldorado, it's essential to consider several common issues that may be at play. Start by checking the cruise control switch, as a faulty switch can prevent the system from engaging. Next, inspect the vehicle's fuse box for any blown fuses that could disrupt functionality. Additionally, look for vacuum leaks within the cruise control system, as these can lead to a loss of pressure and cause the system to fail. The speed sensor is another critical component; if it's defective, it may not accurately maintain the set speed. Don't overlook the brake light switch, as problems here can interfere with the cruise control's ability to engage or disengage. Lastly, examine the throttle cable for any malfunctions that could hinder the system's speed adjustments. By systematically checking these components, you can identify and potentially resolve the issues affecting your cruise control system.

How urgent is it to repair the non-functioning cruise control in a 2000 Cadillac Eldorado?

Repairing the non-functioning cruise control in a 2000 Cadillac Eldorado should be approached with a sense of urgency, primarily due to the safety risks it poses. A malfunctioning cruise control system can lead to erratic speed changes, which may compromise the driver's ability to maintain control, especially on long drives where consistent speed is crucial. Additionally, the convenience factor cannot be overlooked; without cruise control, drivers must constantly monitor and adjust their speed, which can lead to fatigue and distraction. Furthermore, issues with the cruise control may signal deeper problems within the vehicle's electronic or engine control systems. Addressing these concerns promptly not only enhances safety and comfort but also helps prevent potential damage to the vehicle, ensuring it operates at peak performance. Therefore, while it may not seem like an immediate emergency, timely repair of the cruise control system is essential for a safe and enjoyable driving experience.

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2000 Cadillac Eldorado Cruise Control Issues & Repair Costs