Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone grease with a clean cloth. During very cold, damp weather frequent application may be required.
See Recommended Fluids and Lubricants.
Chevrolet Cobalt Service & Repair Manual. Brake Line R&R
Front
1.
Raise and support the vehicle.
2.
Remove the tire and wheel assembly.
3.
Disconnect the front brake pipe fitting
(1) and cap the brake pipe fitting to prevent brake fluid loss and
contaminatio ...