Outside Moisture Sensor Replacement Rain Sensor

Tools Required

J 25070 Heat Gun

Important: A GM service kit is included with a new rain sensor module.

1. Use the tape (1) in order to mark the rain sensor module (2) location on the outside of the windshield.



2. Disconnect the connector (1) from the rain sensor module (2).




Important: Do not apply direct heat to the area around the outside moisture sensor module. Continuous exposure to heat can damage the sensor module or the windshield.

3. Apply heat to the sensor (2) area of the windshield. Use a heat gun with a maximum of 740 watts. Refer to J 25070 .



4. In order to remove the rain sensor (2) from the windshield, twist the sensor back and forth.

Remove the rain sensor module from the windshield.

5. Remove the tape residue from the windshield.
6. Cover the instrument panel below the sensor with a protective cloth.

Caution: If broken glass falls into the defroster outlets, it can be blown into the passenger compartment and cause personal injury.

7. Use a sharp plastic scraper in order to remove the optical tape from the windshield.
8. Wipe the windshield until the remaining tape residue is completely removed. Use a clean lint free cloth with isopropyl alcohol.

Important: The temperature of the windshield must be 13°C (55°F)-38°C (100°F) for proper adhesion.

1. Remove the red backing from the optical tape.

Install the sensor on the windshield.

2. Firmly push the sensor against the windshield. Hold the sensor for 10 to 15 seconds.
3. Inspect the sensor for air bubbles between the tape and the windshield. Repeat the previous step, if incomplete adhesion or bubbles are present.



4. Attach the rain sensor (2) to the windshield.

Important: Do not move or shift the sensor on the windshield after installation.

5. Connect the wiring connector (1) to the sensor (2).



6. Remove the tape (1) from the windshield.
7. Inspect the operation of the rain sensor wiping system. Refer to Wiper/Washer System Check in Wipers/Washer Systems.

Outside Moisture Sensor Replacement Rain Sensor - New Windshield

Important: A GM service kit is available for removal and reinstallation of the rain sensor.

1. Disconnect the connector from the rain sensor module.

Important: Do not apply direct heat to the area around the outside moisture sensor module. Continuous exposure to heat can damage the sensor module or the windshield.

2. Complete the following steps in order to remove the rain sensor module from the windshield.

2.1.	Apply heat to the sensor area of the windshield. Use a maximum 740 watt heat gun.

2.2.	In order to remove the rain sensor from the windshield, twist the sensor back and forth.




3. Remove the optical tape residue from the rain sensor module (3).

3.1.	Place an aluminum plate (2) on the tape residue. Ensure that the plate covers the entire rain sensor module.

3.2.	Use a maximum 740 watt heat gun. Apply the heat directly to the plate for approximately 60 seconds in order to soften the tape residue.

Use pliers in order to remove the HOT plate from the rain sensor module.

3.3.	Using the fingers or thumb, roll the tape residue down the length of the rain sensor module optical area. Repeat this step as needed in order to remove the majority of tape residue from the optical area.

Important: Do not apply direct heat to the area around the outside moisture sensor module. Continuous exposure to heat can damage the sensor module or the windshield.

3.4.	Fill the tray to the bottom of the cut-out notch with cleaning solution. The cleaning solution is included in the service kit.




4. Place the rain sensor module (1) in a tray (3). Allow the tape residue to soak for 15 minutes. Perform Step 1 of the installation procedure while the sensor is soaking.

Important: Do not allow cleaning solution to enter the outside moisture sensor module. Cleaning solution will damage the sensor module. If this occurs, the sensor module must be replaced.

5. Using a lint free cloth and cleaning solution, wipe the remaining tape residue off the optical area. Repeat the previous step as needed.

Less soaking time will be required as the amount of tape residue becomes less.

6. Clean the tray of all tape residue and solution.

1. Mark the location of the sensor (1) on the outside of the windshield.

Use a water soluble marker or tape in order to mark the sensor locations in the following manner:

1.1.	Draw a line (2) perpendicular to the top of the windshield (5) 6 cm (2.375 in) to the right of the passenger side edge of the rear view mirror mount (4).

1.2.	Draw a line (3) parallel to the top of the windshield (5) 2 cm (.750 in) from the bottom of the rear view mirror mount (4). This line should cross the vertical line.




2. Install the optical tape (2) to the rain sensor module (1).

Important: Do not touch the optical tape adhesive. Replace the optical tape (2) if the tape is touched or contaminated.

2.1.	Pull the blue release tab in order to remove the white backing from the optical tape (2).

2.2.	Carefully place the optical tape in a tray with the exposed adhesive in the up position.

The red tab should rest in the cut-out notch of the tray.

2.3.	Apply primer B to the sensor using the applicator supplied in the kit. Follow the directions on the primer B applicator.

Remove excess adhesive using the clean cloth that is included in the service kit.

2.4.	Place the rain sensor module onto the optical tape in the tray. Firmly press down for 10-15 seconds.

Important: DO NOT move the optical tape on the rain sensor module.

2.5.	Remove the rain sensor module from the tray. Remove the air bubbles under the tape with finger pressure.

3. Clean the area of the windshield where the sensor is to be installed. Use a cloth and the cleaning solution included in the service kit.

Important: 

•	The temperature of the windshield must be 13°C (55°F)-38°C (100°F) for proper adhesion.

•	Use care in order to position the rain sensor module properly prior to attaching the sensor to the windshield. The sensor may not be moved once the sensor is in contact with the windshield.

4. Remove the red backing from the optical tape. Immediately install the rain sensor module on the windshield.
5. Push the rain sensor module firmly against the windshield.

Hold the sensor for 10-15 seconds.

6. Inspect the sensor for air bubbles between the tape and the windshield. When incomplete adhesion or bubbles are present, repeat the previous step.
7. Install the windshield into the vehicle.

Important: DO NOT move the rain sensor module on the windshield.

8. Connect the connector to the rain sensor module.
9. Remove the tape or marked lines from the windshield.
10. Inspect the operation of the outside moisture sensing wiper system. Refer to Wiper/Washer System Check in Wipers/Washer Systems.