2003 Pontiac Bonneville Brake Hose Replacement Cost

Brake lines fail due to age more than mileage, and typically a vehicle needing new brake lines have passed the 100,000-mile mark.

When inspecting the brakes, the technician will look for cracking in the brake line. When the brakes are applied, the brake line will swell under hydraulic pressure if they're going bad. Another sign is if the brake line is leaking brake fluid.

Disconnecting the brake line, and connecting the new line takes just a few moments, but the system must be flushed to remove any contaminants or debris left behind by the old brake line. The system then must be bled of air.

When a brake hose is replaced due to the age and condition of the hose, all the brake hoses should be inspected and replaced if needed.

We recommend having the brake hydraulic system flushed any time a component in the hydraulic system is replaced or if the hydraulic system is opened.

If a brake line fails due to deterioration, the others will probably fail soon afterwards. Replacing them all at once may prevent a future visit to a repair facility. At the very least, the other brake lines should be inspected when replacing one of them. We recommend using high-quality or OEM brake lines. The metal brake lines on a vehicle rarely need service, but they can become corroded if the brake fluid is not changed on schedule. Salty road conditions can also cause exterior rust that can lead to failure.

The braking system can be maintained by a DIYer with plenty of knowledge of hydraulic systems. But if you don't have deep knowledge of braking systems, this repair should be left to a professional, as your safety depends on it.