1999 GMC Sierra 1500 Windshield Wipers Aren't Working

Fix Windshield Wiper Issues on 1999 GMC Sierra 1500

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
75% chance it's the
Wiper Motor
0%
25% chance it's the
Switch
The most common reasons a 1999 GMC Sierra 1500 windshield wipers aren't working are broken wiper motor and issues with the switch.
  • Wiper Motor: A faulty wiper motor or a bad electrical connection can result in intermittent or non-functioning windshield wipers.
  • Switch: A faulty switch can result in intermittent or complete failure of the electrical component it controls, leading to malfunctioning systems.
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 1999 GMC Sierra 1500 windshield wipers aren'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.

A failed windshield wiper motor will do one of two things in the event of failure. First, it can intermittently work, meaning when the wiper switch is turned on, the windshield wipers may activate, and run for a random amount of time. This may happen at random, or change with a bump. Lastly, the windshield wipers could show no signs of activity, indicating motor failure.

The moment water touches the windshield, you know if you need new windshield wiper blades. If your wiper blades are torn, cracked, hard, or brittle, it is time for replacement. Wipers should also be replaced if the wiper blades only smear water around, seem to make a mess, streak the windshield, and miss large patches. If you are unhappy with the current wiper blades on your vehicle, this is a very economical change to make.

Windshield wiper arms will be replaced mainly for aesthetic reasons or damage. If the windshield arms become bent or rusted, the windshield wipers may not contact the windshield at the proper angle, or there may be no contact at all. Also, the sun will take a toll on these parts after years of use, and fading or clear coat peeling will result, not to mention rust.

What are the initial steps to diagnose non-working windshield wipers on a 1999 GMC Sierra 1500?

When diagnosing non-working windshield wipers on a 1999 GMC Sierra 1500, it's crucial to follow a methodical diagnostic approach that emphasizes simpler solutions before tackling more complex problems. Start by checking the fuse related to the windshield wipers, as a blown fuse is a frequent culprit that can be easily replaced. If the fuse is functioning, the next step is to test the wiper motor to determine if it is operational; a malfunctioning motor can prevent the wipers from working altogether. Additionally, inspect the wiper blades for any signs of wear or damage, as ineffective blades can severely impact wiper performance. Lastly, evaluate the wiper pulse board, which controls the speed and functionality of the wipers; if they only operate on a high setting, this component may need to be replaced. By systematically addressing these areas, you can efficiently diagnose and resolve the issues affecting your windshield wipers, ensuring they operate effectively when you need them most.

What are the common causes for windshield wipers not working on a 1999 GMC Sierra 1500?

When your windshield wipers fail to operate on a 1999 GMC Sierra 1500, it’s essential to consider several common issues that could be at play. One of the primary culprits is a broken wiper motor, which is crucial for the wipers' movement. If the motor is malfunctioning, it will need to be replaced to restore functionality. Additionally, the windshield wiper switch can also be a source of trouble; if it’s faulty, it may not send the necessary signals to activate the wipers. Another potential issue is a defective wiper motor control board, which can disrupt the electrical flow needed for proper operation. It’s also worth checking the wiper blades themselves; torn or damaged blades can hinder performance and should be replaced regularly. Furthermore, a blown fuse can prevent the wipers from working altogether, so inspecting the fuse box for any blown fuses is a good troubleshooting step. Lastly, during winter months, ice and snow accumulation can overload the system, leading to blown fuses or motor failure. Regular maintenance and inspection of these components can help ensure that your windshield wipers function effectively, keeping your visibility clear in all weather conditions.

How urgent is it to repair the non-functioning windshield wipers on a 1999 GMC Sierra 1500?

Addressing the issue of non-functioning windshield wipers on your 1999 GMC Sierra 1500 is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When wipers fail, visibility is severely compromised during rain or snow, heightening the risk of accidents and endangering both the driver and other road users. Moreover, many regions enforce laws that mandate functional windshield wipers, and neglecting this repair could lead to fines or legal repercussions. Additionally, operating a vehicle with faulty wipers can cause further damage to the windshield itself, resulting in costly repairs that could have been avoided. Lastly, having reliable wipers enhances driver comfort by ensuring a clear view of the road, reducing stress during adverse weather conditions. Therefore, it is essential to prioritize the repair of your windshield wipers to maintain safety, comply with legal standards, prevent additional damage, and ensure a comfortable driving experience.

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