1999–2007 Chevy Silverado 1500 Brake Lines

Brake line sizes, fittings, layout and complete replacement kits for the 1999–2007 Chevrolet Silverado 1500 and GMC Sierra 1500 (GMT800, including 2007 Classic). Every spec on this page comes from the line-by-line contents of our RightQuick kits.

Find your RightQuick kit

Match your truck's model year, cab, drive and bed length. Every kit fits both the Silverado 1500 and the Sierra 1500.

Brake line layout

Each kit replaces every hard line on the truck: two lines from the master cylinder, one to each front wheel hose, a long rear main line down the frame, and two short lines across the rear axle.

What changes between builds

• Rear main line length follows wheelbase: 98" to 135" in our kits, depending on cab and bed.
• Front lines vary by build. Most 4WD kits use a 73" left and 143" right line; several RWD kits use 81" and 133". Check the part table for your kit.
• Master cylinder lines run straight to the ABS module on most kits. On 2003–2004 kits (and LTRQ151 and LTRQ152), they go through a proportioning valve first.
• Rear axle lines on some 2005–2007 kits have an M10 x 1.0 nut on one end instead of 3/8-24.

Every line, by part number

Tube size, length and end fittings for every line used in these kits. Most lines are also sold individually if you only need to replace one run.

Why these lines rust out

NHTSA investigated brake-line corrosion on 1999–2007 GM full-size pickups and SUVs, roughly 5 million vehicles, after 3,645 complaints. Three-quarters of the complaints were on 1999–2003 models. When it closed the investigation in 2015, NHTSA concluded the corrosion came from years of road-salt exposure rather than a manufacturing defect, and advised owners in 20 cold-weather states and Washington, D.C. to inspect their brake lines and replace any that are corroded.

Replacing rusted steel with copper-nickel means you're not doing the job again in a few winters.

Source: NHTSA investigation EA11-001 closing report; CBS News, April 2015.

What you'll need

• The RightQuick kit for your truck (lines arrive pre-cut, pre-flared and numbered)
• Flare-nut (line) wrenches to avoid rounding the old fittings
• Penetrating oil for seized nuts
• DOT 3 brake fluid (check your master cylinder cap for the spec)
• Brake bleeding equipment and a helper
• SAE and metric fitting gauges, if you want to confirm a thread before ordering

Installation overview

1. Lay out the kit and match each numbered line to the diagram before removing anything.
2. Replace one line at a time so you always have the old line as a routing reference.
3. Form each new line by hand along the factory path and seat it in the original clips.
4. Start every nut by hand to avoid cross-threading, then tighten with a flare-nut wrench.
5. Bleed the full system, check every joint for leaks under pedal pressure, and road-test at low speed before normal driving.

This is an overview, not a substitute for the factory service procedure. If your truck has active brake control (RPO JL4) or an unusual configuration, contact us before ordering.

Frequently asked questions

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