To diagnose and fix windshield wiper issues in a Cadillac, begin with checking the blades for cracks or stiffness, as these should be replaced every 6 to 12 months. Inspect the motor for loose wires or rust, using a multimeter to ensure proper voltage. Examine the wiper linkage for rust or worn bushings, and, for control switch issues, employ a multimeter to verify signal transmission. Test the wiper fuse by assessing the metal strip for breaks and ensure the wiper fluid system's reservoir and hoses are functional. Confirm wiper arm alignment with a torque wrench. Each step ensures comprehensive diagnostics.

Check Wiper Blades Condition

Check your Cadillac's wiper blades to see if they need replacing. Look for cracks, tears, or stiffness in the rubber. These signs mean the blades might not work well anymore. Good wiper blades usually last between six to twelve months, but heavy rain or snow can wear them out faster.

Make sure the blades touch the windshield properly. If they don't, you might see streaks or missed spots. This can happen if the blades aren't aligned right or if the pressure is uneven.

Also, check that the blades are firmly attached to the wiper arm. If they're loose, they might not wipe well or could even come off.

There are different types of wiper blades, like beam-style or hybrid blades, which can work better and last longer. Beam-style blades press evenly, which helps keep the windshield clear in bad weather.

When choosing new blades, compare brands like Bosch or Rain-X. They have different strengths and weaknesses. Some, like Bosch's ICON series, are known for lasting longer and performing well in different conditions.

Inspect the Wiper Motor

First, make sure your wiper blades are in good shape. Then, check the wiper motor, which makes the wipers work on your Cadillac. If the motor isn't working, the wipers won't move, which can be dangerous.

1. Check Connections: Look at the motor's electrical connections. See if there's rust or if the wires are loose. These can stop the motor from working well.
2. Test Voltage: Use a multimeter to check the voltage at the motor's terminals. It should match the car battery's voltage. If not, the motor might not be getting enough power.
3. Listen for Sounds: Turn on the wipers and listen. Noises like grinding or buzzing can mean there are problems inside the motor.
4. Inspect the Housing: Look at the motor's casing. Check for cracks or rust, which can weaken it.
5. Watch for Intermittent Operation: If the motor stops and starts, it might be overheating or breaking down.

Sometimes, resetting the motor can fix issues.

But if problems keep happening, you might need a professional to look at it or even replace the motor to keep your wipers working properly.

Examine the Wiper Linkage

Check the wiper linkage on your Cadillac to make sure the windshield wipers work well. This part, also called the wiper transmission, links the motor to the wiper arms, helping them move together across the windshield. Over time, wear or dirt can affect this part, causing the wipers to move oddly or stop working.

First, look at the linkage for signs of rust, corrosion, or damage. These can make it not work right. Focus on the bushings, which connect different parts of the linkage. If they are worn or cracked, the wipers might move loosely or become misaligned. You might need to replace the bushings or the whole linkage if this happens.

Try moving the wiper arms by hand. If they feel stiff or resist moving, there might be something blocking them or a mechanical issue. Look for loose or disconnected parts and make sure all screws and bolts are tight.

If the linkage seems broken or doesn't work, ask a mechanic to check and fix it. Keeping the wiper linkage in good shape helps ensure safe driving.

Assess the Wiper Control Switch

When fixing wiper problems in your Cadillac, look at the wiper control switch. This switch helps you control the wipers' speed and movement. It's usually on the steering column. If it wears out or breaks, it might cause problems like wipers not starting, moving at the wrong speed, or not stopping.

To check if the switch is working, first, see if there's any physical damage like loose parts or broken levers. Use a multimeter to ensure the switch sends the right signals when you change settings. According to Cadillac's guidelines, the switch should have a steady electrical connection.

If the switch is faulty, replace it with a Cadillac part to keep things working well. Other brands might be cheaper but might not work as reliably.

In one case, a 2018 Cadillac CTS had better wiper response after a switch replacement, showing how important this part is.

Test the Wiper Fuse

To check if your car's windshield wipers are working right, start by looking at the wiper fuse. This is a small part that stops too much electricity from damaging the wiper motor.

First, grab your car's manual to find out where the fuse box is and which fuse is for the wipers.

Once you find the wiper fuse, use a fuse puller or needle-nose pliers to take it out. Look at the metal strip inside the fuse. If the strip is broken or looks burnt, the fuse is blown and needs a new one.

Make sure to replace it with a fuse that has the same amperage rating.

If the new fuse blows right away, there's probably a bigger problem with the car's electrical system. This means you'll need to have a professional take a look.

Checking the wiper fuse from time to time can help keep your wipers working well.

Evaluate Wiper Fluid System

Check the wiper fluid system in your Cadillac to keep the windshield wipers working well. A good washer fluid system helps you see clearly, especially when the weather is bad.

1. Fill the Reservoir: Make sure the washer fluid tank has enough fluid. If it's low, the wipers can't clean the windshield properly.
2. Look for Blockages: Check the nozzles where the washer fluid sprays out. Dirt or debris can block them, stopping the fluid from reaching the windshield.
3. Inspect the Hoses: Look at the hoses that connect the fluid tank to the nozzles. If there are any cracks or leaks, the fluid won't get to the windshield.
4. Check the Pump: Turn on the washer fluid system and listen for the pump. If it's silent or makes a strange noise, it might need checking or replacing.

Following these steps helps keep your windshield clear, making driving safer.

Verify Wiper Arm Alignment

To get the best out of your Cadillac's windshield wipers, make sure the wiper arms are aligned right.

First, turn off the wipers and let them rest. The blades should line up with the bottom edge of the windshield and not go over it.

Check if the wiper arms are straight and match the windshield edge. If not, they might skip or leave marks. To fix this, loosen the nuts at the base of the arms. Adjust the arms to the right spot and then tighten the nuts. Use a torque wrench and follow the manufacturer's guide, usually between 20-25 Nm.

Remember that Cadillacs might have different wiper systems. Some have a direct-drive system, which is more precise but pricier to fix. Others have a linkage-based system, which costs less but might need more adjustments.

Keeping the wipers aligned helps them work better and last longer, so you can see clearly while driving.

People Also Ask

How Often Should Cadillac Windshield Wipers Be Replaced?

Cadillac windshield wipers should be changed every 6 to 12 months. How often you need to change them depends on how much you use them and the weather. Check them regularly for signs of wear, like streaks or noise, to stay safe while driving.

Can Weather Conditions Affect the Performance of Windshield Wipers?

Yes, weather can affect windshield wipers. Hot or cold temperatures can make the rubber wear out. Snow and ice can block the wipers, and heavy rain can be tough for them. It's important to check them often to make sure they work well.

Are There Any Common Recalls Related to Cadillac Wiper Systems?

Yes, there have been recalls for Cadillac wiper systems. Problems like broken wiper motors or wiper arms not working right can make it hard to see when driving. This can be dangerous, so it's important to check and fix them regularly.

How Do I Choose the Right Replacement Wiper Blades for My Cadillac?

To choose the right wiper blades for your Cadillac, check your car's manual or use an online tool from a trusted store. Look at the blade size, material, and design to make sure they work well and last a long time.

What Are the Signs of a Failing Wiper Relay in a Cadillac?

If your Cadillac's wipers are acting up, it might be a bad wiper relay. Look for wipers moving strangely, not working when you switch them on, or not moving at all. If you hear weird noises or smell something burning, check the relay.