1996 Pontiac Firebird Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1996 Pontiac Firebird and How to Fix Them

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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 1996 Pontiac Firebird 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 Pontiac Firebird 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 steps to diagnose the non-functional cruise control in a 1996 Pontiac Firebird?

To effectively diagnose a non-functional cruise control in a 1996 Pontiac Firebird, start with the simplest checks before delving into more complex diagnostics. Begin by inspecting the fuses associated with the cruise control system; a blown fuse can often be the culprit behind the malfunction. Next, examine the brake pedal and throttle body for any signs of wear or damage, as these components play a crucial role in the cruise control's operation. It's also essential to locate the cruise control relay within the underhood convenience center and verify its functionality, as a faulty relay can disrupt the system's performance. Lastly, consulting the owner's manual will guide you to the fuse box in the engine bay, where you can specifically check the fuse dedicated to the cruise control. By following these initial steps, you can systematically identify and address common issues that may be preventing your cruise control from working properly.

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

When troubleshooting the cruise control system in a 1996 Pontiac Firebird, 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, rendering it inoperable. Next, inspect the brake pedal switch, as this component is crucial for the cruise control's functionality; if it’s faulty, the system may deactivate unexpectedly when the brakes are applied. 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 interfere with the system's ability to maintain speed. Lastly, a malfunctioning speed sensor can lead to inaccurate speed readings, causing the cruise control to fail. By systematically examining these components, you can effectively diagnose and potentially resolve the issues affecting your Firebird's cruise control.

How urgent is it to address the malfunctioning cruise control in a 1996 Pontiac Firebird?

Addressing a malfunctioning cruise control in a 1996 Pontiac Firebird is of utmost importance due to the safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can create dangerous driving conditions and increase the likelihood of accidents. Promptly resolving this issue not only safeguards your well-being but also helps prevent further complications that could arise from neglecting the problem. Ignoring the malfunction may lead to more extensive damage to the vehicle's systems, resulting in costly repairs down the line. Additionally, a properly functioning cruise control enhances the overall driving experience, making long trips more comfortable and convenient. Therefore, it is crucial to take immediate action to diagnose and repair any issues with the cruise control system to ensure both safety and vehicle reliability.

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