GM 2 Wire Speed Sensor Wiring Diagram

The GM 2 wire speed sensor is an electronic sensor used in automatic transmissions. It provides a signal to the transmission control module (TCM) to determine the speed of the vehicle. This sensor is especially important for the proper functioning of the ABS system. In this article, we will discuss the wiring diagram for the GM 2 wire speed sensor.

Parts of the GM 2 Wire Speed Sensor

The GM 2 wire speed sensor consists of two wires, a signal wire and a ground wire. The signal wire carries the speed signal to the TCM, while the ground wire serves as the return path for the signal. The sensor also has a connector that attaches to the wiring harness.

When the sensor is installed, the signal wire is connected to the TCM, while the ground wire is connected to the chassis ground or to the negative battery terminal. The wiring diagram for the GM 2 wire speed sensor is shown below.

Wire Color Description
Red Signal wire
Black Ground wire

Wiring Diagram for the GM 2 Wire Speed Sensor

The wiring diagram for the GM 2 wire speed sensor is shown below.

Gm 2 Wire Speed Sensor Wiring DiagramSource: bing.com

The red wire from the sensor is connected to the TCM signal input. The black wire is connected to the chassis ground or to the negative battery terminal. The TCM provides power to the sensor through the signal wire, which also carries the speed signal back to the TCM.

FAQ

What is the purpose of the GM 2 wire speed sensor?

The GM 2 wire speed sensor provides a signal to the TCM to determine the speed of the vehicle. This information is used by the TCM to control the shifting of the automatic transmission.

Why is the GM 2 wire speed sensor important for the ABS system?

The speed sensor provides information to the ABS system about the speed of each wheel. This information is used by the ABS system to prevent the wheels from locking up during a panic stop or on slippery roads.

What should I do if my speed sensor is malfunctioning?

If your speed sensor is malfunctioning, you may notice problems with your automatic transmission or ABS system. You should have your vehicle inspected by a qualified mechanic to determine the source of the problem.

How do I install a GM 2 wire speed sensor?

To install a GM 2 wire speed sensor, first locate the sensor on your vehicle. The sensor is usually located on the transmission housing or on one of the wheels. Once you have located the sensor, remove the old sensor and install the new sensor in its place. Connect the signal wire to the TCM signal input and the ground wire to the chassis ground or negative battery terminal.

Can I use a GM 2 wire speed sensor on any vehicle?

No, the GM 2 wire speed sensor is designed specifically for use in GM vehicles. Using this sensor on a non-GM vehicle could result in incorrect readings or damage to the sensor or the vehicle.