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.
To effectively diagnose the non-functioning cruise control in your 1991 Chevrolet V1500 Suburban, start with the simplest components before moving on to more complex systems. Begin by checking the cruise control switch located on the steering column, as a faulty switch can prevent the system from engaging. Next, inspect the control module for any visible signs of failure, such as corrosion or damage, which could disrupt functionality. It's also crucial to verify the cruise control fuse; a blown fuse is a common and easily fixable issue. After that, examine the vacuum lines associated with the cruise control system for any leaks or damage, as these can significantly impact performance. Finally, test the cruise control brake switch to ensure it is operating correctly, as this switch is essential for the system to function properly. By following this systematic approach, you can efficiently narrow down the potential causes of the cruise control malfunction and take the necessary steps to restore its functionality.
When troubleshooting the cruise control system in a 1991 Chevrolet V1500 Suburban, it's essential to understand the common problems that may lead to its failure. One of the first things to check is the fuse; a blown fuse can easily disrupt the entire system, rendering it inoperable. If the fuse is intact, the next step is to inspect the cruise control switch, as a faulty switch can prevent the system from engaging. Additionally, vacuum leaks are a frequent culprit, as they can compromise the system's functionality. The speed sensor also plays a critical role; if it's defective, the cruise control may struggle to maintain the desired speed. Furthermore, issues with the brake light switch can interfere with the cruise control operation, since the system is designed to disengage when the brakes are applied. Lastly, don't overlook the throttle cable, as any malfunction here can hinder the cruise control's ability to maintain speed accurately. By systematically checking these components, you can effectively diagnose and potentially resolve the cruise control issues in your Suburban.
When evaluating the urgency of repairing the non-functioning cruise control in your 1991 Chevrolet V1500 Suburban, it's essential to weigh the implications of neglecting this issue. While cruise control may not be critical for the vehicle's basic operation, its absence can significantly impact your driving experience, especially on long trips where maintaining a steady speed is beneficial for comfort and fatigue reduction. Additionally, a malfunctioning cruise control system could indicate underlying mechanical problems that, if left unaddressed, might escalate into more severe issues, potentially compromising safety. Furthermore, if you plan to sell your vehicle in the future, having all features in working order can enhance its resale value, making it more appealing to potential buyers. Therefore, while the urgency of the repair may vary based on your driving habits, it is advisable to consult a mechanic to diagnose the problem and consider the broader implications of delaying the repair.
See what others are asking about their Chevrolet V1500 Suburban. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Chevrolet V1500 Suburban drivers like you.