REMOVAL & INSTALLATION
See Figure 1
Wiper blade insert replacement procedures are detailed in Routine Maintenance .
Removal of the wiper arms requires the use of a special tool, GM J-8966 or its equivalent prytool. Versions of this tool are generally available in auto parts stores.
- With the wipers on, turn the ignition OFF when the blades get to the mid-wipe position.
- Mark the position of the arms on the windshield.
- Lift the wiper arm from the windshield, then insert the tool under the wiper arm. Pry the arm off the upper transmission drive shaft.
- Disconnect the washer hose from the arm (if so equipped).
- Remove the wiper blade assembly from the arm.
- Install the wiper blade on the arm. Align the arm with the mark made on the windshield.
- Attach the wiper arm assembly to the transmission drive shaft, then push in the arm retaining latch, and return the wiper arm assembly to the windshield.
- Turn the ignition in the ON position, then park the wipers.
The only adjustment for the wiper arms is to remove an arm from the transmission shaft, rotate the arm the required distance and direction and then install the arm back in position so it is in line with the blackout line on the glass. The wiper motor must be in the park position.
The correct blade-out wipe position on the driver's side is 1 1 / 32 in. (28mm) for 1982-85 models and 11 / 16 in. (18mm) for 1986-96 models, from the tip of the blade to the left windshield pillar molding. The correct blade-down wipe position on the passenger side of the car is in line with the blackout line at the bottom of the glass.