How to deal with the inability to raise or lower the middle door window of the Buick GL8?

[JustinMarie]

Buick GL8 middle door window cannot be raised or lowered due to reasons such as damaged window lift motor, poor contact of the electrical control wiring harness, motor overheating protection, excessive resistance of the glass guide channel, or loss of computer data. Below are specific introductions about the one-touch window function: 1. Function: It is convenient for drivers and passengers to use, mainly to avoid the driver being distracted by operating the window, thereby improving safety. Additionally, one-touch windows generally have anti-pinch functions to prevent the danger of pinching hands. 2. Basic principle: A reversible DC series-wound motor is installed in each door. By switching the direction of the motor's operation through a conversion switch, the motor drives the glass to slide up and down parallelly via a worm gear reducer installed on the motor's main shaft, a drum, and steel wires. The upper and lower ends are equipped with stops, and a tension drum and spring maintain a certain tension on the steel wires to ensure the mechanism operates normally. Besides the steel wire type window lift mechanism, there is also a lever-operated type.