1999 Buick Century Windows Won't Go Up Or Down

Troubleshooting Common Window Issues in Your 1999 Buick Century and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
36% chance it's the
Fuse, Relay or Electrical System
0%
20% chance it's the
Window Motor
0%
24% chance it's the
Window Regulator
0%
20% chance it's
Something else
The most common reasons a 1999 Buick Century window won't go up or down are window's electrical system such as a fuse or relay, a broken window motor, or a broken window regulator.
  • Fuse, Relay or Electrical System: A blown fuse or a faulty relay can disrupt the electrical circuit, causing components to fail or operate intermittently.
  • Window Motor: A faulty window motor or a broken window regulator can prevent the window from moving up or down properly.
  • Window Regulator: A faulty window regulator can cause the window to become stuck or operate erratically due to worn gears or a broken cable.
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 Buick Century window won't go up or down?

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.

If the door window motor fails, the window may not open or close, or it may operate intermittently. Traditionally, problems with power windows were caused by faulty switches or electrical wiring - especially the wires running between the door and the vehicle body that are subjected to repeated flexing. In these cases, the window might operate intermittently when the door is opened and closed. While this may still be the case on newer cars, it is increasingly common to find window motor problems that originate with a control module. Still, the switches and wiring should be checked thoroughly before replacing a window motor.

If one of the windows in a vehicle will not open or close properly, a failing door window regulator might be the cause. A window that is moving intermittently, or one that gets stuck on the way up or down, could also indicate a broken regulator. Other symptoms might include a clicking, chattering, or grinding noise when the window moves. In some cases a severely damaged window regulator could cause the window to drop inside the door.

When a switch can not make contact and close the circuit, the window cannot be raised and lowered. If the switch on the driver's door will not raise or lower the window in question, but the switch on the corresponding door works just fine, this is a good indication that there is a switch failure. This works the other way around, as well. If the switch on the door does not cause the window to function, but the driver's switch does, that is an indication of a passenger door window switch failure.

Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless. However, there is a way to categorize them in two ways. Permanent and intermittent problems. Permanent problems appear and remain. This may be the vehicle will not start, the radio does not work, or the door chime will not turn off among many, many others. These problems are more straight-forward to diagnose since they present themselves at all time. This means there will always be a fault to find. Intermittent electrical problems, however, can be difficult or impossible to locate, since they appear then disappear without warning. The best case scenario for an intermittent issue is when replicating the problem is easily accomplished and understood. This allows a technician to make an issue semi-permanent, allowing them to find the fault. Other issues that come and go without warning and cannot be replicated on demand must occur when the technician is servicing the vehicle, otherwise there is no problem to correct. It is most important to understand that electrical system faults always require inspection, and can include the vehicle working in any manner, or not working at all.

Like we noted in the last section, general diagnosis symptoms are the most vague of the bunch. There are several diagnostic spectrums, electrical diagnosis, drivability diagnostics, engine diagnostics, transmission diagnostics, and the list could continue for about 5 or 10 more spectrums of diagnostics. The most important take-away here, is that general diagnostics are diagnostics that have no other spectrum in which they fit, or the problem is unknown. This means that any vehicle left outside of a repair facility with the keys and an authorization to perform diagnosis will be diagnosed under the general diagnosis spectrum.

What are the steps to diagnose the window issue in a 1999 Buick Century where the windows won't go up or down?

When diagnosing the power window issue in a 1999 Buick Century, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the fuses and circuit breakers associated with the power windows, as these are often the culprits behind electrical failures. If the fuses are intact, proceed to verify that power is reaching the master switch using a test light or multimeter; this will help you determine if the switch is receiving the necessary voltage to operate. Next, inspect the ground connections, particularly the one located behind the driver's kick panel, as a poor ground can disrupt the entire system. If these components check out, test the master switch itself for functionality, as a malfunctioning switch can prevent the windows from responding. Should the switch be operational, the issue may lie with the window motors or regulators, which require further investigation to ensure they are receiving power and functioning correctly. Lastly, conduct a visual inspection for any physical damage to the window mechanisms, and consider consulting a repair manual for detailed guidance tailored to your vehicle. By following this diagnostic approach, you can effectively identify and address the issue with your power windows.

What are the common problems that could cause the windows to stop functioning in a 1999 Buick Century?

When dealing with non-functioning power windows in a 1999 Buick Century, it's essential to understand the common problems that may be at play. One frequent culprit is faulty switches, which can either be the master switch or individual window switches. Even if you replace a switch, it may not always solve the issue, as new switches can also malfunction. Electrical issues are another significant factor; wiring can become damaged or pinched, particularly in areas where wires pass through the doors. It's crucial to check that power is reaching the switches and motors, as problems with the wiring can lead to window failures. Additionally, fuses should be inspected, as they can appear intact yet still be faulty. If the switches and fuses check out, the window motors or regulators may be the next components to examine, as these can fail and require replacement. Lastly, consider the broader electrical system; if other electrical components are also malfunctioning, it may indicate a systemic issue rather than a localized problem with the windows. By systematically checking these areas, you can effectively diagnose and potentially fix the power window issues in your Buick Century.

How urgent is it to fix the non-functioning windows on a 1999 Buick Century?

When it comes to fixing non-functioning power windows on a 1999 Buick Century, understanding the urgency of the situation is crucial. While it may not seem like an immediate emergency, the implications of neglecting this issue can escalate quickly. The inconvenience of being unable to open windows during inclement weather can significantly affect your driving comfort and the overall experience for passengers. Moreover, from a safety perspective, having windows that won’t operate can hinder your ability to exit the vehicle swiftly in an emergency or communicate effectively with others outside. Additionally, if the malfunction stems from a failing window motor or electrical system, delaying repairs could lead to more extensive damage, resulting in higher repair costs down the line. Therefore, while it’s not critical to fix the windows right away, addressing the problem sooner rather than later is advisable to ensure your vehicle remains safe, comfortable, and in good working condition. If you're unsure about troubleshooting the issue yourself, seeking assistance from a professional mechanic can help you avoid potential complications.

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1999 Buick Century Window Won't Go Up Down: Causes & Repairs