1996 Cadillac Eldorado Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1996 Cadillac Eldorado and How to Fix Them

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Reviewed by
Bo Fader
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 1996 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 1996 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-functional cruise control in a 1996 Cadillac Eldorado?

When troubleshooting the non-functional cruise control in a 1996 Cadillac Eldorado, it's crucial to adopt a systematic diagnostic approach. Begin by checking the fuse associated with the cruise control system, as a blown fuse can often be the simplest explanation for the malfunction. Next, inspect the cruise control switch located on the steering wheel to ensure it is operational and free from damage. The brake pedal switch is another critical component to examine, as it disengages the cruise control when the brakes are applied; if this switch is faulty, it could prevent the system from engaging. Additionally, testing the vehicle speed sensor is essential, as it provides the necessary speed data to the cruise control module. Finally, using a diagnostic scanner to check for any error codes can reveal underlying issues that may not be immediately apparent. By following these steps, you can effectively diagnose and potentially resolve the cruise control problem in your Cadillac Eldorado, empowering you to tackle the repair with confidence.

What are the common problems that could cause the cruise control to stop working in a 1996 Cadillac Eldorado?

When dealing with cruise control issues in a 1996 Cadillac Eldorado, it's essential to understand the common problems that may be at play. One of the first areas to check is the cruise control switch, as a malfunction here can prevent the system from engaging or disengaging properly. Additionally, a blown fuse can disrupt the entire cruise control system, so inspecting the fuses is a crucial step. Another potential culprit is vacuum leaks, which can hinder the system's ability to maintain speed effectively. It's also important to consider the speed sensor; if it's defective, it can lead to inaccurate speed readings that affect cruise control functionality. Furthermore, the brake light switch plays a vital role in cruise control operation, as a faulty switch may prevent activation for safety reasons. Lastly, issues with the throttle cable can interfere with the system's ability to adjust speed accurately. By systematically checking these components, DIYers can identify and address the root cause of cruise control failures in their Cadillac Eldorado.

How urgent is it to address the malfunctioning cruise control in a 1996 Cadillac Eldorado?

Addressing a malfunctioning cruise control in a 1996 Cadillac Eldorado is of utmost importance due to the safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions and increase the likelihood of accidents. Promptly resolving this issue not only safeguards your well-being but also helps prevent further damage to the vehicle's components, which could result in more extensive and costly repairs down the line. Additionally, a malfunctioning cruise control detracts from the overall driving experience, making your time on the road less enjoyable. Therefore, it is crucial to take immediate action to ensure both your safety and the longevity of your vehicle.

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