1994 Chevrolet S10 Blazer Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 1994 Chevrolet S10 Blazer 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 1994 Chevrolet S10 Blazer 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 1994 Chevrolet S10 Blazer 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 initial diagnostic steps to troubleshoot the non-functioning cruise control in a 1994 Chevrolet S10 Blazer?

When faced with a non-functioning cruise control in a 1994 Chevrolet S10 Blazer, 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 S10 Blazer.

What are the common problems that could cause the cruise control to stop working in a 1994 Chevrolet S10 Blazer?

When dealing with a non-functional cruise control system in a 1994 Chevrolet S10 Blazer, it's crucial to understand the common problems that may be at play. One of the first things to check is the fuse associated with the cruise control; a blown fuse can easily disrupt the system's operation. Additionally, the brake pedal switch is another critical component, as it is designed to deactivate the cruise control when the brake is engaged. If this switch is faulty, it may prevent the cruise control from functioning altogether. Another potential issue could stem from a defective speed sensor, which is responsible for providing accurate speed readings; inaccuracies here can lead to cruise control malfunctions. Furthermore, vacuum leaks within the cruise control system can significantly impact its performance, causing it to stop working unexpectedly. A malfunctioning cruise control module can also be a culprit, as it is essential for engaging and maintaining speed. Lastly, wiring issues, such as frayed or disconnected wires, can lead to failures in the system. By systematically diagnosing these areas, DIYers can effectively identify and resolve the underlying issues affecting the cruise control system in their Blazer.

How urgent is it to address the non-functioning cruise control in a 1994 Chevrolet S10 Blazer?

Addressing a non-functioning cruise control in a 1994 Chevrolet S10 Blazer is important for both safety and vehicle performance. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. A malfunctioning cruise control system can indicate underlying electrical issues or sensor failures, which, if left unresolved, could compromise the vehicle's overall functionality. Moreover, the convenience of cruise control enhances long-distance driving by reducing fatigue and improving fuel efficiency; without it, drivers may experience discomfort during extended trips. Therefore, it is advisable to investigate and resolve any cruise control issues promptly. This proactive approach not only ensures a smoother driving experience but also helps maintain the vehicle's integrity, preventing further complications that could arise from ignoring the symptoms. By taking the time to address this concern, DIY enthusiasts can enhance their vehicle's reliability and safety on the road.

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