Although not considered a routine maintenance item, the wiper arms for your 2003 Chevrolet S-10 may require replacement at some point during the life of the vehicle. Over time, fading and corrosion will cause an unsightly appearance. The wiper arms also feature an internal spring, designed to keep the wiper blade against the windshield with an adequate amount of tension. If the internal spring loses tension, the wiper blade may hop or skip across the windshield or fail to keep complete contact throughout the entire back-and-forth stroke.
Items you will need
- Crayon or washable marker
- Flat head screwdriver
- Socket set
- Torque wrench
Mark the resting position of the wiper blade on the windshield, using a crayon or washable marker.
Examine the base of the wiper arm. Lift the nut cover from the base of the arm, using your fingers. You may need to lift one or both sides of the nut cover to detach the piece from the base of the wiper arm. For particularly stubborn covers, use a flat-head screwdriver to lift the bottom perimeter of the piece, near the rounded end of the arm.
Remove the nut securing the arm to the splined drive shaft. Grasp the wiper arm and remove it from the splined drive shaft. You may need to rock the wiper back and forth to work the arm from the shaft.
Prepare new blades according to the manufacturer's instructions. This may include installing the proper mounting adapter for your specific wiper arm.
Attach the new or reusable blade to the wiper arm. Give the blade a slight downward tug to ensure proper seating and locking tab engagement.
Check for proper pivoting movement between the blade and arm.
Mount the arm loosely on the splined drive shaft, making sure the blade is positioned between the marks made on the windshield. Grasp the base of the wiper arm and use your fingers to put tension on the blade side of the arm, enabling you to press the base of the arm evenly onto the splined drive shaft.
Thread the nut onto the drive shaft, using your fingers.
Tighten the nut to 17 foot-pounds, using a torque wrench and socket.
Attach the nut cover to the base of the wiper arm to complete the installation process.