Where is the four speed automatic transmission circuit board located in the 06 Buick Grand Touring?

The four speed automatic transmission circuit board is in the center armrest box in the car.

The following is the introduction of automatic transmission:

Automatic transmission is a kind of transmission device that can automatically shift gears according to the speed of the car and the engine rotation speed and maneuver according to the manual transmission. At present, there are four common types of automobile automatic transmission, respectively, hydraulic automatic transmission (AT), mechanical continuously variable automatic transmission (CVT), electronically controlled mechanical automatic transmission (AMT) and dual-clutch automatic transmission.

The core of an automatic transmission is in the realization of automatic gear shifting. The so-called automatic shifting refers to the process of driving the car, the driver according to the driving process needs to manipulate the accelerator pedal (gas pedal), the automatic transmission can be based on the engine load and the car's operating conditions, automatically shifting into different gears work.

The above information refers to Baidu Encyclopedia--Automatic Transmission