As a general rule, you will not be able to get a crack front window repair if it is more than 6 inches long. If your problem is a chip instead of a crack, the chip should not be larger than a quarter. Keep in mind that these rules are not hard and fast, always check with a local professional.
Once the door panel is removed, the problem may be quite obvious, as it was in my case. Your door may have a vapor barrier or plastic sheet that is glued to the door. Carefully remove this. In most cases, you can reuse the adhesive for the barrier during re-assembly. Make sure the motor is connected. Look for burned wires or obvious damage. If everything is intact, you need to test the motor. The best way to do this is to run a jumper wire from the positive terminal of your battery to the positive side of the motor to see if it jumps to life. If not, the motor needs to be replaced.
Clean and paint your fix auto glass door. It may sound rather obvious, but this is something buyers are going to study closely while they are waiting to be let in to view. Additionally ensure your door furniture is clean and functional and the door knocker or bell works properly. The house number or name should be clearly visible and securely fastened.
Check with your insurance, because it's likely your insurance will pay for some forms of windshield chip repair. They may even waive the deductible, since repairing your windshield is so much cheaper than replacing a windshield. Should you need total windshield replacement, you may have to pay a deductible with your insurance.
System Image There's nothing worse than discovering that you need to reinstall Windows for some reason. You also have to ensure that you have drivers for all your hardware, reinstall the applications you use regularly, reload your data, and reconfigure all of the system, so that it's exactly the way you used to have it. Rather than go through this pain, you can use a Windows 7 feature called System Image Backup to create what is called a system image. This image, which is essentially a huge file, contains the entire contents of your PC as it existed when you backed up an image. You can simply restore the system image and get right back to work.
Most auto glass companies offer a lifetime warranty which proves that the process is reliable and can be trusted to keep you from having to replace the entire windshield.