1997 Oldsmobile LSS Cruise Control Isn't Working

Fixing Cruise Control Issues in 1997 Oldsmobile LSS

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Reviewed by
Devin Cabugcal
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 Oldsmobile LSS 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 Oldsmobile LSS 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.

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 steps to diagnose the non-functioning cruise control on a 1997 Oldsmobile LSS?

To effectively diagnose the non-functioning cruise control on your 1997 Oldsmobile LSS, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the fuse associated with the cruise control system, as a blown fuse is a common and easily fixable issue. Next, assess the cruise control switch to ensure it is operational; a malfunctioning switch can prevent the system from engaging. Following this, examine the brake pedal switch, which is crucial since the cruise control disengages when the brake is applied. If these components check out, proceed to test the speed sensor, as it is vital for relaying accurate speed information to the cruise control module. Utilizing a diagnostic scanner can also be beneficial to identify any error codes that may indicate specific problems within the system. Lastly, given the age of the vehicle, inspect the vacuum lines for any leaks or damage, as these can significantly impact the cruise control's functionality. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control issue.

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

When dealing with a malfunctioning cruise control system in a 1997 Oldsmobile LSS, it's essential to understand the 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. Next, inspect the brake pedal switch, as a faulty switch may fail to signal the system to disengage when the brakes are applied, leading to unexpected behavior. Additionally, the cruise control module itself could be defective, which would prevent the system from functioning correctly. It's also important to look for vacuum leaks, as these can significantly impact the operation of the cruise control. A faulty speed sensor may also be the culprit, as it is responsible for maintaining the set speed. Lastly, examine the wiring for any frayed or loose connections that could interfere with the system's functionality. By systematically checking these components, DIYers can often identify and resolve the issue without needing professional assistance.

How urgent is it to repair the non-functioning cruise control in a 1997 Oldsmobile LSS?

When evaluating the urgency of repairing the non-functioning cruise control in a 1997 Oldsmobile LSS, it's essential to recognize that while this feature enhances driving comfort, it does not compromise the vehicle's safety or basic functionality. The cruise control system is primarily a convenience, allowing for a more relaxed driving experience, especially on long journeys. However, neglecting to address this issue could lead to further complications down the line, such as electrical problems or the potential for more extensive repairs if the underlying cause is not identified. Therefore, while it may not be an immediate priority, scheduling an inspection at your convenience can prevent minor issues from escalating and ensure that your driving experience remains enjoyable and stress-free.

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