1997 Pontiac Trans Sport Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1997 Pontiac Trans Sport 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 1997 Pontiac Trans Sport 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 Pontiac Trans Sport 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 steps to diagnose the non-functioning cruise control in a 1997 Pontiac Trans Sport?

To effectively diagnose the non-functioning cruise control in your 1997 Pontiac Trans Sport, begin with a systematic approach that prioritizes simpler checks before delving into more complex components. Start by inspecting the fuse associated with the cruise control system, as a blown fuse is a common and easily rectifiable issue. Next, evaluate the cruise control switch to ensure it is operational; a malfunctioning switch can prevent the system from engaging. Following this, check the brake pedal switch, which is crucial since the cruise control disengages when the brake is applied. If these components are functioning correctly, turn your attention to the vehicle speed sensor, as it is essential for the cruise control to operate effectively. Additionally, inspect the cruise control module for any signs of damage, as this component controls the entire system. Finally, examine the wiring and connections for any loose or damaged areas that could disrupt functionality. By methodically assessing each of these elements, you can identify and resolve the issue with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 1997 Pontiac Trans Sport?

When troubleshooting the cruise control system in a 1997 Pontiac Trans Sport, it's essential to consider several common problems that could be at play. One of the first things to check is the fuse box, as a blown fuse can easily disrupt the cruise control functionality. If the fuses are intact, the next step is to inspect the electrical components associated with the cruise control system, as any faults in these parts can lead to malfunctions. Additionally, it's crucial to examine the brake lights, since a faulty brake light can interfere with the cruise control operation; many systems are designed to deactivate cruise control when the brake lights are not functioning properly. By systematically addressing these potential issues, you can effectively diagnose and potentially fix the cruise control problem in your vehicle.

How urgent is it to address the non-functioning cruise control in a 1997 Pontiac Trans Sport?

When it comes to a non-functioning cruise control in a 1997 Pontiac Trans Sport, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to significant safety risks. A malfunctioning cruise control system can cause erratic speed changes, which may compromise your ability to maintain control of the vehicle, especially during long drives. Additionally, the comfort and convenience that cruise control provides are lost, leading to increased driver fatigue and stress. Furthermore, a faulty cruise control could indicate deeper issues within the vehicle's electrical system or engine components. By addressing the malfunction promptly, you not only enhance your driving experience but also prevent potential complications that could result in costly repairs. Therefore, it is crucial for DIY enthusiasts to prioritize fixing the cruise control system to ensure both safety and vehicle integrity.

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1997 Pontiac Trans Sport Cruise Control Issues & Solutions