1997 Buick Skylark Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1997 Buick Skylark and How to Fix Them

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Reviewed by
Andrew Hajjar
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 1997 Buick Skylark 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 1997 Buick Skylark 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.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

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 in a 1997 Buick Skylark?

When faced with a non-functioning cruise control in a 1997 Buick Skylark, it's crucial to adopt a systematic diagnostic approach. Begin by checking the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, inspect the wiring for any visible damage or loose connections, since faulty wiring can disrupt the system's operation. Testing the cruise control switch on the steering wheel is also essential, as a malfunctioning switch can prevent engagement. Given the age of the vehicle, don't overlook the vacuum lines; check them for leaks or damage, as these can significantly impact functionality. If the problem persists, using a diagnostic scanner to check for error codes can provide insights into specific issues. Finally, inspect the cruise control module located in the engine bay for any signs of damage or corrosion. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control issue in your Buick Skylark.

What are the common problems that could cause the cruise control to stop working in a 1997 Buick Skylark?

When troubleshooting the cruise control system in a 1997 Buick Skylark, it's essential to consider several common problems that could be at play. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system, so inspecting and replacing any damaged fuses is a straightforward first step. Next, the brake pedal switch should be examined, as a malfunctioning switch can prevent the cruise control from engaging when the brake is pressed. Additionally, vacuum leaks are a frequent culprit; inspecting the vacuum lines for any signs of wear or damage can help restore functionality. Another critical component to assess is the speed sensor, as a faulty sensor can lead to erratic or non-responsive cruise control behavior. Lastly, if all else fails, the cruise control module itself may be the issue, requiring either repair or replacement. By systematically addressing these potential problems, you can effectively diagnose and restore the cruise control system in your Buick Skylark.

How urgent is it to address the malfunctioning cruise control in a 1997 Buick Skylark?

Addressing a malfunctioning cruise control in a 1997 Buick Skylark is of utmost urgency due to the significant safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can result in dangerous driving conditions and increase the likelihood of accidents. Moreover, delaying repairs not only jeopardizes your safety but can also exacerbate the problem, potentially leading to more extensive and costly repairs down the line. It is crucial to recognize that the longer you wait to address these issues, the greater the risk of further damage to your vehicle's components. Therefore, it is highly advisable to have the cruise control system inspected and repaired by a qualified mechanic as soon as possible to ensure the safe and reliable operation of your vehicle on the road.

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