Chevrolet V1500 Suburban Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Chevrolet V1500 Suburban 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
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25% chance it's the
Control Module
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25% chance it's the
Throttle
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20% chance it's
Something else
The most common reasons a Chevrolet V1500 Suburban 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 Chevrolet V1500 Suburban 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.

Troubleshooting Cruise Control Issues in a Chevrolet V1500 Suburban

When troubleshooting cruise control issues in your Chevrolet V1500 Suburban, it's essential to adopt a systematic diagnostic approach. Start by examining the throttle actuation system, as this is often the primary culprit behind cruise control malfunctions. Look for any signs of wear or irregularities that could impede its function. Next, inspect the control module, which is responsible for managing the cruise control system; ensure it is operational and free from faults. Following this, check the sensors and switches associated with the cruise control, as defects in these components can disrupt the system's performance. Lastly, don't overlook the brake light switch, since a malfunction here can inadvertently cancel the cruise control when it shouldn't. By methodically assessing these areas, you can identify and resolve the issue, restoring your vehicle's cruise control functionality without the need for professional assistance. If these steps do not yield results, consider seeking help from a certified mechanic for a more comprehensive diagnosis.

What Could Cause the Cruise Control to Malfunction in a Chevrolet V1500 Suburban?

When dealing with cruise control malfunctions in a Chevrolet V1500 Suburban, it's essential to understand the common problems that may arise. A failed control module, sensor, or switch can disrupt the system's functionality, while throttle sensor failures and actuation problems can prevent the cruise control from engaging properly. Additionally, issues with the cruise control switch itself may lead to intermittent or complete failure. If you've made modifications to the engine or exhaust system, these changes could also impact cruise control performance. It's crucial to check for blown fuses, as they can disable the system entirely. Furthermore, a defective brake pedal switch or malfunctioning brake pedal sensor can inadvertently disengage cruise control, while problems with the throttle control system or ABS may complicate matters further. In older models, a broken vacuum line can also be a culprit. By systematically examining these potential issues, DIYers can effectively diagnose and address the root cause of cruise control malfunctions in their Chevrolet V1500 Suburban.

Why is the Cruise Control Not Working in a Chevrolet V1500 Suburban?

When your Chevrolet V1500 Suburban's cruise control system fails, it’s crucial to address the issue promptly to avoid potential safety risks and costly repairs. Ignoring symptoms such as erratic speed control or sudden disengagement can lead to dangerous driving situations, especially on long trips where cruise control is often utilized. Common culprits include a malfunctioning control module, faulty sensors, or issues with the throttle actuation system, all of which can compromise the vehicle's performance. Additionally, a defective brake light switch can inadvertently cancel cruise control, posing a risk if the driver is unaware. If left unchecked, these problems may escalate, leading to more significant engine issues or electrical failures. Therefore, it’s advisable to systematically diagnose the root cause of the malfunction, starting with the simplest solutions like checking fuses and switches, to ensure your vehicle remains safe and reliable on the road.

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Chevrolet V1500 Suburban Cruise Control Issues & Repairs